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ImmuCell Corporation

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FY2023 Annual Report · ImmuCell Corporation
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UNITED STATES 
SECURITIES AND EXCHANGE COMMISSION 
Washington, D.C. 20549 
________________________ 

FORM 10-K 

_____________________ 

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE  SECURITIES EXCHANGE ACT OF 1934 
For the fiscal year ended December 31, 2023   
001-12934 
(Commission file number) 

ImmuCell Corporation 

(Exact name of registrant as specified in its charter) 

Delaware 
(State of incorporation) 

56 Evergreen Drive, Portland, Maine 
(Address of principal executive offices) 

01-0382980 
(I.R.S. Employer   
Identification No.) 

04103 
(Zip Code) 

Securities registered pursuant to Section 12(b) of the Act:   

(207) 878-2770 
(Registrant’s telephone number) 

Title of each class 

Trading symbol(s) 

Name of each exchange on which registered 

Common Stock, $0.10 par value per share 

ICCC 

Nasdaq 

Securities registered pursuant to Section 12(g) of the Act: None 

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes  No  
Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15(d) of the Act. Yes  No  

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities 
Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), 
and (2) has been subject to such filing requirements for the past 90 days. Yes  No  

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant 
to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant 
was required to submit such files). Yes  No  

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller 
reporting company or an emerging growth company. Large accelerated filer  Accelerated filer  Non-accelerated filer  Smaller 
reporting company  Emerging growth company  

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for 
complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  

Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of 
its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public 
accounting firm that prepared or issued its audit report.    

 
 
 
 
 
 
 
 
 
 
  
If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the 
registrant included in the filing reflect the correction of an error to previously issued financial statements.  

Indicate by check mark whether any of those error corrections are restatements that require a recovery analysis of incentive-based 
compensation received by any of the registrant’s executive officers during the relevant recovery period pursuant to §240.10D-1(b).  
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes  No  

The aggregate market value of the voting and non-voting common equity held by non-affiliates at June 30, 2023 was approximately 
$31,165,000 based on the closing sales price on June 30, 2023 of $5.00 per share. 

The number of shares of the registrant’s common stock outstanding as of March 8, 2024 was 7,750,864. 

 
 
 
 
 
ImmuCell Corporation 
TABLE OF CONTENTS 
December 31, 2023 

ITEM 1 

PART I 
Business…………………………………………………………………………………. 

ITEM 1A 

Risk Factors……………………………………………………………………………... 

ITEM 1B 

Unresolved Staff Comments…………………………………………………………….. 

ITEM 1C 

Cybersecurity……………………………………………………………………………. 

ITEM 2 

Properties……………………………………………………………………………....... 

ITEM 3 

Legal Proceedings……………………………………………………………………….. 

ITEM 4 

ITEM 5 

Mine Safety Disclosures………………………………………………………………… 
PART II 

Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer 
Purchases of Equity Securities………………………………………………………….. 

ITEM 6 

[Reserved]……………………………………………………………………………….. 

ITEM 7 

Management’s Discussion and Analysis of Financial Condition and Results of 
Operations……………………………………………………………………………….. 

ITEM 7A 

Quantitative and Qualitative Disclosures about Market Risk…………………………... 

ITEM 8 

Financial Statements and Supplementary Data…………………………………………. 

ITEM 9 

Changes In and Disagreements With Accountants on Accounting and Financial 
Disclosure……………………………………………………………………………….. 

ITEM 9A 

Controls and Procedures………………………………………………………………… 

ITEM 9B 

Other Information……………………………………………………………………….. 

ITEM 9C 

ITEM 10 

Disclosure Regarding Foreign Jurisdictions that Prevent Inspections…….……………. 
PART III 
Directors, Executive Officers and Corporate Governance……………………………… 

ITEM 11 

Executive Compensation………………………………………………………………... 

ITEM 12 

Security Ownership of Certain Beneficial Owners and Management and   
Related Stockholder Matters……………………………………………………………. 

ITEM 13 

Certain Relationships and Related Transactions, and Director Independence…………. 

ITEM 14 

ITEM 15 

Principal Accountant Fees and Services………………………………………………... 
PART IV 
Exhibits and Financial Statement Schedules...……………………...…………………... 

ITEM 16 

Form 10-K Summary…………………………………………….……………….……... 

1 

10 

20 

20 

20 

21 

21 

21 

22 

22 

37 

37 

37 

37 

38 

38 

38 

42 

45 

46 

47 

48 

51 

Audited Financial Statements……………………………………………………………  F-1 to F-26 

Signatures 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
ImmuCell Corporation 
PART I 

ITEM 1 – BUSINESS 

Cautionary Note Regarding Forward-Looking Statements (Safe Harbor Statement): 

This Annual Report on Form 10-K (Annual Report) contains “forward-looking statements” within the meaning of the Private 

Securities Litigation Reform Act of 1995, as amended. Forward-looking statements can be identified by the fact that they do not relate 
strictly to historical or current facts, and will often include words such as “expects”, “may”, “anticipates”, “aims”, “intends”, “would”, 
“could”, “should”, “will”, “plans”, “believes”, “estimates”, “targets”, “projects”, “forecasts”, “seeks” and similar words and 
expressions. Such statements include, but are not limited to, any forward-looking statements relating to: our plans and strategies for 
our business; projections of future financial or operational performance; the timing and outcome of pending or anticipated applications 
for regulatory approvals; future demand for our products; the extent, nature and duration of the COVID-19 pandemic and its 
consequences, and their direct and indirect impacts on our production activities, operating results and financial condition and on the 
customers and markets that we serve; the impact of Russia’s unprovoked military invasion of Ukraine (and attack on its people) and 
the war in the Middle East on the world economy including inflation and the price and availability of grain and oil; the impact of the 
global supply-chain disruptions on our ability to obtain, in a timely and cost-effective fashion, all the supplies and components we 
need to produce our products; the impact of inflation and rising interest rates on our operating expenses and financial results; the scope 
and timing of ongoing and future product development work and commercialization of our products; future costs of product 
development efforts; the estimated prevalence rate of subclinical mastitis and producers’ level of interest in treating subclinical 
mastitis given the current economic and market conditions; the expected efficacy of new products; estimates about the market size for 
our products; future market share of and revenue generated by current products and products still in development; our ability to 
increase production output and reduce costs of goods sold per unit; the adequacy of our own manufacturing facilities or those of third 
parties with which we have contractual relationships to meet demand for our products on a timely basis; the impacts of backlogs on 
customer relationships; the efficacy, success and timeline to complete our contamination remediation efforts; the likelihood, severity 
or impact of future contamination events; the anticipated costs of (or time to complete) planned expansions of our manufacturing 
facilities and the adequacy of our funds available for these projects; the robustness of our manufacturing processes and related 
technical issues; estimates about our production capacity, efficiency and yield; future regulatory requirements relating to our products; 
future expense ratios and margins; the efficacy of our investments in our business; future compliance with bank debt covenants; 
anticipated changes in our manufacturing capabilities and efficiencies; our effectiveness in competing against competitors within both 
our existing and our anticipated product markets; projections about depreciation expense and its impact on income for book and tax 
return purposes; and any other statements that are not historical facts. These statements are intended to provide management's current 
expectation of future events as of the date of this earnings release, are based on management's estimates, projections, beliefs and 
assumptions as of the date hereof; and are not guarantees of future performance. Such statements involve known and unknown risks 
and uncertainties that may cause the Company's actual results, financial or operational performance or achievements to be materially 
different from those expressed or implied by these forward-looking statements, including, but not limited to, those risks and 
uncertainties relating to: difficulties or delays in development, testing, regulatory approval, production and marketing of our products 
(including the First Defense® product line and Re-Tain®), competition within our anticipated product markets, customer acceptance 
of our new and existing products, product performance, alignment between our manufacturing resources and product demand 
(including the consequences of backlogs), uncertainty associated with the timing and volume of customer orders as we come out of a 
prolonged backlog, adverse impacts of supply chain disruptions on our operations and customer and supplier relationships, 
commercial and operational risks relating to our current and planned expansion of production capacity, and other risks and 
uncertainties detailed from time to time in filings we make with the Securities and Exchange Commission (SEC), including our 
Quarterly Reports on Form 10-Q, our Annual Reports on Form 10-K and our Current Reports on Form 8-K. Such statements involve 
risks and uncertainties and are based on our current expectations, but actual results may differ materially due to various factors, 
including the risk factors summarized under PART I: ITEM 1A – RISK FACTORS of this Annual Report and uncertainties 
otherwise referred to in this Annual Report. In addition, there can be no assurance that future risks, uncertainties or developments 
affecting us will be those that we anticipate. We undertake no obligation to update any forward-looking statement, whether written or 
oral, that may be made from time to time, whether as a result of new information, future developments or otherwise. 

1 

 
 
 
OUTLINE TO ITEM 1 – BUSINESS: 

- 

Summary 

-  Production Capacity Increase and Product Contamination 

ImmuCell Corporation 

-  Animal Health Products 

- 

Sales and Markets 

-  Product Development 

-  Competition 

- 

Intellectual Property 

-  Government Regulation 

-  Employees 

-  Public Information 

Summary 

ImmuCell Corporation was founded in 1982 and completed an initial public offering of common stock in 1987. After achieving 

approval from the Center for Veterinary Biologics, U.S. Department of Agriculture (USDA) to sell First Defense® in 1991, we focused 
most of our efforts during the 1990’s attempting to develop human product applications of the underlying milk protein purification 
technology. Beginning in 1999, we re-focused our business strategy on the First Defense® product line and other products that improve 
the health and productivity of dairy and beef cattle. We support the dairy and beef industries’ purpose to produce nutritious, protein-rich 
food efficiently while ensuring food quality and safety. Our products help address the growing human health concern about using less 
antibiotics in food-producing animals. We aim to capitalize on the growth in sales of the First Defense® product line (a product that 
provides significant Immediate Immunity™ to newborn dairy and beef livestock) and to revolutionize the mastitis treatment paradigm 
with Re-Tain®, a novel product we are developing to treat this most significant cause of economic loss to the dairy industry. 

During 2000, we began the development of Re-Tain®, our purified Nisin treatment for subclinical mastitis in lactating dairy 

cows. No sales of this product can be made without prior approval of our New Animal Drug Application (NADA) by the Center for 
Veterinary Medicine, U.S. Food and Drug Administration (FDA). We have achieved FDA approval for four out of five of the 
significant Technical Sections required for product approval, and we have made our third submission of the fifth Technical Section. 
We expect a response to this third submission from the FDA by May of 2024. Regulatory achievements to date have significantly 
reduced the product development risks in the areas of safety and effectiveness. Our primary product development focus has now 
turned to completion of the manufacturing objectives required for FDA approval. 

Since 2006, we have made ongoing efforts to maintain compliance with current Good Manufacturing Practice (cGMP) 

regulations in all of our manufacturing operations, which requires a sustained investment that further enhances the quality of all of our 
products and our operating efficiency. As we make process improvements, we continue to invest in personnel, equipment and facility 
modifications to increase the efficiency and quality of our operations. 

During the eight-year period beginning January 1, 2016 and ended December 31, 2023, we funded our operations, constructed 
an FDA-regulated Drug Substance (DS) manufacturing facility for Re-Tain® and invested capital to increase our production capacity 
for the First Defense® product line. We have also initiated another capital investment (which investment is currently paused) to bring 
the formulation and aseptic filling capabilities for Re-Tain® in house in order to end our present reliance on an outside contractor. 
From the first quarter of 2016 through the second quarter of 2021, we issued an aggregate of 4,553,017 shares of common stock, 
raising gross proceeds of approximately $26.7 million in six separate transactions. In order to minimize the dilutive effects of these 
transactions on our existing stockholders, we chose not to issue any form of convertible or preferred securities and issued these 
common shares without any warrants. Net of debt issuance and debt discount costs, we had approximately $12 million in outstanding 
debt as of December 31, 2023 compared to approximately $3.2 million as of December 31, 2015. This equity and debt capital has 
been, and is being, used to increase the production capacity for the First Defense® product line and complete the development of Re-
Tain® without relying on funding from a partner or licensee, thereby keeping control over all product rights and future revenues. 
During this time, our total assets have increased to $43.8 million as of December 31, 2023 from $14.6 million as of December 31, 
2015, and our stockholders’ equity has increased to $25 million as of December 31, 2023 from $10.6 million as of December 31, 
2015. This represents a 200%, or $29 million, increase in total assets and a 135%, or $14.4 million, increase in stockholders’ equity 
over this eight-year period. 

2 

 
Production Capacity Increase and Product Contamination 

ImmuCell Corporation 

During 2018, it became clear that demand for Tri-Shield First Defense® was outpacing production. In response to this               
increasing demand, we began a series of investments during 2019 to increase our production capacity for the First Defense® product 
line to approximately $30 million per year. The necessary facility expansions and new equipment needed to increase production 
capacity were in place by the end of 2022. See PART II: ITEM 7 – MANAGEMENT’S DISCUSSION AND ANALYSIS OF 
FINANCIAL CONDITION AND RESULTS OF OPERATIONS, for more detail about our investments to increase production 
capacity. 

As this increased production capacity was coming online, a product contamination event was detected by standard in-process 

quality control testing around the end of the third quarter of 2022. Scrapped product from contamination events (largely this one 
around the end of the third quarter) and other production process losses resulted in a total charge to costs of goods sold of 
approximately $589,000 during 2022. We took immediate steps to address the contamination, and production ran without issue during 
the balance of the fourth quarter of 2022. Then during the first quarter of 2023, our standard in-process quality control testing detected 
a second contamination event. We slowed down our production output to take the necessary steps to assess and remediate the issues 
and perform a deep sanitization of our facilities and process equipment. After several months of processing without further 
contamination, we experienced a third contamination event during the third quarter of 2023. Scrapped product from contamination 
events and other production process losses resulted in a total charge to costs of goods sold of approximately $527,000 during 2023. 
We believe that the ongoing implementation of our capacity expansion plans and the corrective actions being taken in response to 
these contamination events should allow us to operate at the higher level of production output going forward without further 
significant contaminations. We worked diligently to address the situation and believe we are taking the appropriate steps to emerge 
from this problem stronger with the production capacity in place to produce approximately $30 million of product per year going 
forward, while continuing to ensure that any product that is put to market meets all quality standards.   

We believe that our efforts to increase production capacity for the First Defense® product line are linked to our product 

contaminations. It was relatively simple to run at lower production capacities for the 30 years between 1991 (the original USDA 
approval of First Defense®) and 2021. The contamination events we suffered during 2022 and 2023 were largely the result of us 
processing more milk (colostrum) than ever before in order to meet increasing customer demand. As we enter 2024, we believe that 
we have much improved processes and controls in place to better support large-scale production from our raw material source farms 
through liquid processing. Our most important customer-focused objectives going forward are to fulfill the large backlog of orders and 
then again be a reliable supplier of a very effective product to the dairy and beef calf market. 

Animal Health Products 

The First Defense® product line is manufactured from hyperimmunized cows’ colostrum (the antibody rich milk that a cow 

produces immediately after giving birth) utilizing our proprietary vaccine and milk protein purification technologies. The First 
Defense® product line provides bovine antibodies that newborn calves need but are unable to produce on their own immediately after 
birth. The target disease, calf scours (bovine enteritis), causes diarrhea and dehydration in newborn calves and often leads to serious 
sickness and even death. The First Defense® product line is the only USDA-licensed, orally delivered scours preventive product on 
the market for calves with claims against E. coli, coronavirus and rotavirus (three leading causes of scours). A single dose of our 
product provides a measured level of protection proven to reduce mortality and morbidity. Our pre-formed antibody products provide 
Immediate Immunity™ during the first few critical weeks of life when calves need this protection most. Studies have shown calves 
that scour are more susceptible to other diseases later in life and under-perform calves that do not contract scours. The direct, two-part 
mode-of-action of the First Defense® product line delivers specific immunoglobulins at the gut level to immediately protect against 
disease, while also providing additional antibodies that are absorbed into the bloodstream. These circulating antibodies function like a 
natural timed-release mechanism, as they are re-secreted into the gut later to provide extended protection. The First Defense® product 
line is convenient to use. A calf needs to receive only one dose of First Defense® within the first twelve hours after birth. Our capsule 
format of this product, which requires no mixing, is stored at room temperature, while the gel tube formats of this product require 
refrigeration in accordance with product label indications. We are the market leader (in terms of both unit volume and dollar sales) 
when compared to other calf-level scours preventatives and have greater market potential as we gain market share from the dam-level 
(pre-calving scour vaccines) competitors. The third quarter of 2023 marked the 32nd anniversary of the original USDA approval of this 
product in 1991. During the fourth quarter of 2023, our cumulative sales of First Defense® since inception exceeded 33 million doses. 

The product line extension, Tri-Shield First Defense, is the first calf-level, passive antibody product on the market with  

USDA-approved disease claims providing Immediate Immunity™ against each of the three leading causes of calf scours (E. coli,   
coronavirus and rotavirus). This product achieved USDA approval during the fourth quarter of 2017 and was listed with the Organic         
Materials Research Institute (OMRI) during the first quarter of 2019, which means it can be used on organic farms. Tri-Shield combines 
the E. coli and coronavirus antibodies contained in our bivalent product with rotavirus antibodies in a single-dose gel tube delivery 
format. This unique breadth of claims further differentiates our product from calf-level competitive products on the market that contain 

3 

 
 
 
ImmuCell Corporation 
only one or two of these label claims. The unique virus-like particle (VLP) technology that is used in our production process increases 
rotavirus titers in colostrum to a level much greater than traditional vaccine technology can. Because it is possible that some farms may 
not have (or perceive to have) a rotavirus problem, we are continuing to sell the bivalent formats of the First Defense product line as 
options for customers.   

The First Defense® product line continues to benefit from wide acceptance by dairy and beef producers as an effective tool to 

prevent scours in newborn calves, which is the leading cause of death in preweaned calves. Our Beyond Vaccination® marketing 
campaign focuses on providing antibodies without vaccination. A 100% vaccine protection rate is biologically impossible. The First 
Defense® product line removes the variability associated with a scour vaccine response and instead provides a measured level of pre-
formed antibodies, protecting each calf with an equal level of scours protection. There is a strong link between how we sell our 
product and the challenges we face in producing it. We know better than most how variable a cow’s response is to any vaccine. We 
see this in every batch of First Defense® that we produce. The value in First Defense® is that we adjust for this variability by 
standardizing the antibody content, as needed, so the newborn is given a steady, equal level of protection with each dose. This 
technology removes a producer’s reliance on variable vaccine responses to generate passive antibody protection and instead protects 
every calf equally with a measured dose of Immediate Immunity™ against the most common scour pathogens. Preventing newborn 
calves from becoming sick helps them to reach their genetic potential and reduces the need to use treatment antibiotics later in life. 
Plus, an effectively treated calf is much less likely to require expensive antibiotic treatments or build antibiotic resistance. We are the 
only manufacturer within the scour prevention space offering polyclonal multi-pathogen antibodies. The market is learning that the 
best preventative for scours may not be a vaccine, and we are continuing to educate the market about the health benefits of a measured 
dose of pre-formed antibodies.     

Historically, the most common tool to help combat scours has been to vaccinate the mother cow (dam) with a scours vaccine and 

deliver the antibodies that she produces in her milk to the newborn. It is generally believed that only 80% of animals respond to a 
vaccine, which could leave about 20% of calves unprotected. We believe that the variability in a cow’s immune response to vaccines 
creates a sales opportunity for our product. Additionally, our research suggests that treatment protocols for dam-level scours vaccine 
programs are not always followed, leaving even more calves compromised. We are competing effectively against these dam-level 
vaccine products. Our marketing campaign, Beyond Vaccination, emphasizes that by delivering Immediate Immunity™ directly to 
the calf via the First Defense product line, producers can reduce stress-causing injections to the cow. Reliance on a dam-level scours 
vaccine requires that money be spent before it is known whether the cow is carrying a viable, valued calf. With the First Defense 
product line, that investment can be targeted to the calves that are most critical to the operation. This, in turn, can free up space in the 
cow’s vaccination schedule to improve her immune response to vaccines that are critical to her health.   

First Defense Technology® is a unique whey protein concentrate that is processed utilizing our proprietary colostrum (first 
milk) protein purification methods, for the nutritional and feed supplement markets without the claims of our USDA-licensed product. 
During 2012, we initiated a limited launch of a gel tube delivery format of our First Defense Technology® in a gel solution. We 
achieved USDA claims for this product format during the fourth quarter of 2018 and Canadian approval during the first quarter of 
2019, and it is now being sold as Dual-Force First Defense®. We are selling the same concentrated whey proteins in a bulk powder 
format (no capsule), which is delivered with a scoop and mixed with colostrum for feeding to calves. We are working to achieve 
USDA claims for this product format. During 2011, Milk Products, LLC of Chilton, Wisconsin launched commercial sales of their 
product, Ultra Start® 150 Plus and certain similar private label products, which are colostrum replacers with First Defense 
Technology® Inside.   

During 2001, we began to offer our own, internally developed California Mastitis Test (CMT). CMT is most often used as a 

quick on-farm diagnostic to determine which quarter of the udder is mastitic. This test can be performed at cow-side for early 
detection of mastitis. CMT products are also made by other manufacturers and are readily available to the dairy producer.   

Sales and Markets 

We believe that the long-term growth in sales of the First Defense® product line may reflect, at least in part, the success of our 
strategic decision to invest in additional sales and marketing efforts to help us introduce the expanding First Defense® product line to 
new customers. Our communications campaign continues to emphasize how the unique ability of the First Defense® product line to 
provide Immediate Immunity™ generates a dependable and competitive return on investment for dairy and beef producers. Our sales 
and marketing team consists of one vice president, one commercial research and technical services veterinarian, one commercial 
leader of stakeholder engagement, one director of marketing and eight regional sales managers. The First Defense® product line and 
CMT are sold primarily through major animal health distributors who, in turn, sell to veterinary clinics, fleet stores and direct to 
farms. Our expanded sales and marketing team has proven to be a worthy investment, validating that our message resonates well with 
customers. Now that our increased production capacity is in place, we anticipate being able to escalate our growth curve after we 
recover from the brand damage that can come with an extended duration of short supply.   

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ImmuCell Corporation 

Sales of the First Defense® product line are normally seasonal, with higher sales expected during the first quarter, largely driven 

by the beef calving season, which runs primarily from January to April, unlike the dairy industry in which operations generally calve 
year round. Warm and dry weather reduces the producer’s perception of the need for a disease preventative product like the First 
Defense® product line. However, heat stress on calves caused by extremely hot summer weather can increase the incidence of scours, 
just as harsher winter weather benefits our sales. Other competition for resources that dairy producers allocate to their calf enterprises 
has been increased by the many new products (principally feed supplements) that have been introduced to the calf market.   

We estimate that the total U.S. market for scours preventative products (including sales of our product) that are given to 
newborn calves (the calf-level market) is approximately $25.6 million per year. With the additional claim for our new product (Tri-
Shield First Defense®) against rotavirus, we are now also competing against the dam-level vaccine products that are given to the 
mother cow to increase the antibody level against specific scours-causing pathogens in the colostrum that she produces for her 
newborn. We estimate that the dam-level product category covers approximately twice as many calves as the calf-level product 
segment reaches. We estimate that the total domestic addressable market (both calf and dam levels) is approximately $75.4 million per 
year.   

Based on market share information that we purchase from the leading source of this data for the animal health sector, we believe 

that we are gaining market share in the United States year after year. We aim to continue these market share gains in both the dairy 
and beef segments. Our share of the dairy and beef market (calculated on the basis of calves treated) of the scour preventative products 
administered at the calf-level was approximately: 

2019 
36% 

2020 
41% 

2021 
43% 

2022 
44% 

2023 
48% 

  Our share of the dairy and beef market (calculated on the basis of calves treated) of both products administered at the calf-level 

and vaccines administered to the dam prior to calving (adjusting for two doses of dam-level scour vaccines required for primary 
vaccination of first-calf heifers) was approximately:   

2019 
11% 

2020 
13% 

2021 
13% 

2022 
14% 

2023 
14% 

We continue our efforts to grow sales of the First Defense® product line in North America, where there are approximately 40 

million dairy and beef cows in the United States and approximately 4.5 million dairy and beef cows in Canada. We believe that 
significant market opportunities exist in other international territories. The majority of our international sales are to Canada. We price 
our products in U.S. dollars. To the extent that the value of the dollar declines with respect to any other currency, our competitive 
position may be enhanced. Conversely, an increase in the value of the dollar in any country in which we sell products may have the 
effect of increasing the local price of our products, thereby leading to a potential reduction in demand. Generally, our international 
sales have been generated through relationships with in-country distributors that have knowledge of the local regulatory and marketing 
requirements. We are initiating our plan to expand the number of countries to which our First Defense® product line is approved for 
export. Generally, it is our intent to be the holder of these product registrations for each country rather than rely on distribution 
partners to gain and hold these registrations. This is a long regulatory process but allows us to maximize the use of our product label 
claims. Industry practices, economic conditions, cause of disease, distribution channels and regulatory requirements may differ in 
these international markets from what we experience in North America, potentially making it more difficult or costly for us to 
generate and sustain sales volumes at profitable margins in these markets. 

We introduced First Defense® into South Korea in 2005 through Medexx Co., Ltd of Gyeonggi-do, Korea and its equivalent 
into Japan in 2007 through NYS Co., Ltd of Iwate, Japan. We are working with Medexx to expand our business in South Korea to 
include the registration of Tri-Shield First Defense®. The business in Japan is currently not active, but we are working to resume sales 
in this territory. We entered into distribution contracts covering certain Middle Eastern countries with Triplest for Drugs and Trade of 
Madaba, Jordan during the first quarter of 2017 (no sales have yet been achieved under this contract) and covering Iran with Senikco, 
LLC of Laguna Niguel, California during the fourth quarter of 2016 (sales have been initiated under this contract). We are 
investigating the requirements to sell the First Defense® product line in Mexico, Pakistan and India. 

With Re-Tain®, we are working to expand our product portfolio to include an intramammary infusion for the treatment of 
subclinical mastitis in lactating dairy cows. Mastitis is inflammation of the mammary gland typically associated with a bacterial 
infection. It is estimated to cost the U.S. dairy industry approximately $2 billion in economic harm per year. It is the most costly and 
common disease affecting the dairy industry. This illness is categorized as either clinical mastitis or subclinical mastitis. Clinical 
mastitis infections cause visibly abnormal milk which cannot be sold. On the other hand, subclinical mastitis infections do not cause 
any visible changes in milk or udder appearance, making it difficult to detect. Most mastitis cases treated today are those that reach the 
clinical stage even though it is understood that clinical cases are only the tip of the mastitis iceberg. Milk from cows with subclinical 
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ImmuCell Corporation 
mastitis can still be sold if not treated with traditional antibiotics. Milk from cows treated with traditional antibiotics must be discarded 
for the duration of the treatment and for 1.5 to 4 days after the last treatment, depending on the antibiotic that was used. The cost of 
that milk discard along with the stress and risk in moving the cow to the hospital pen is thought to be a primary reason more 
subclinical mastitis cases are not treated today. However, the cascade of negative events triggered by subclinical mastitis for both the 
dairy producer and the milk processor are significant. These include lower milk production (some have estimated approximately 1,500 
pounds of lost milk, or about $270 at $18.00 per hundredweight per infected cow per lactation), higher rates of clinical mastitis, lower 
conception rates, increased abortions, increased cull rates, reduced or foregone milk quality premiums, shorter shelf life for fluid milk, 
and both lower yields and less flavor for cheese. Cows with subclinical mastitis maintain a reservoir of infection within the herd and 
increase exposure of healthy cows to contagious pathogens. Subclinical mastitis also increases the risk of various quality defects on a 
variety of final dairy products. 

The active ingredient in Re-Tain® is pharmaceutical-grade Nisin-A. FDA approval for this drug would establish an entirely new 

class of anti-infective that is different from those currently available to treat mastitis. This new class, called bacteriocins, are anti-
microbial polypeptides with no resistance risk for human health. Bacteriocins selectively target Gram+ bacteria, the same bacteria that 
commonly cause mastitis. We expect Re-Tain® will be the first FDA-approved intramammary treatment for subclinical mastitis 
without an FDA-required milk discard or meat withhold. This gives us the opportunity to revolutionize the way mastitis is treated, 
since Re-Tain® is specifically designed to treat ahead of clinical signs without an FDA-required milk discard or meat withhold. As a 
result, we believe that our product can help cows reach their peak milk production and not be sent to the hospital pen.   

Referencing the big picture, we are introducing an entirely new class of socially-responsible antimicrobials as an animal drug, a 

bacteriocin, that does not promote resistance against antibiotics used in human medicine. As the great NHL hockey player, Wayne 
Gretzky, is known to have said, “I skate to where the puck is going to be, not where it has been.” This is motivational to us. We 
believe our product fits very well with where the industry is going to be in the coming years. Sustainability objectives of the industry 
require that less antibiotics be used in food producing animals, yet a new product to treat mastitis has not been developed in years 
(other than new formulations of the same old stuff). The over-use of antibiotics that are medically important to human healthcare is a 
growing concern of our society and an active issue with the FDA, largely because of the growing evidence that this over-use 
contributes to antibiotic resistance. The industry could keep treating this very significant disease with traditional antibiotics, but it 
takes innovation to bring a bacteriocin like Nisin to market. We believe that societal animal welfare objectives will put more and more 
pressure on the industry to treat cows with subclinical infections.   

Because Nisin is a naturally occurring bacteriocin that is not used in human medicines, it could alleviate some of the social and 
public health concerns that the widespread use of antibiotics encourages the growth of antibiotic-resistant bacteria. For example, there 
is a fear that the possible overuse of antibiotics in livestock undermines the effectiveness of these drugs to combat human illnesses and 
contributes to a rising number of life-threatening human infections from antibiotic-resistant bacteria, commonly known as 
“superbugs”. The FDA has expressed a commitment to addressing this public health risk. Citing concerns about untreatable, life-
threatening infections in humans, new FDA and European regulations are aimed at restricting the use of antibiotics (such as penicillin 
and cephalosporins) in food animals and at improving milk quality. By reducing the risk of antibiotic residues and slowing the 
development of antibiotic-resistant organisms, we believe that we can improve food quality and preserve medically important 
antibiotics for human disease treatment. This current environment is favorable to the introduction of our new product as an alternative 
to traditional antibiotics. We believe that this changing environment of new regulations and public opinion supports the value of our 
ongoing development and commercialization efforts for Re-Tain®. Additionally, we believe that the use of our First Defense® 
product line is consistent with this trend of reducing the use of antibiotics because the prevention of calf scours early in life with our 
purified colostrum antibodies can reduce the need to use treatment antibiotics later in a calf’s life. 

We estimate that the approximate cost to the U.S. dairy industry of discarded milk associated with the use of traditional 

antibiotic products currently on the market may be around $300 million per year. These high milk discard costs associated with 
traditional antibiotic treatments lead producers to only treat mastitis after clinical signs develop. The Re-Tain® label will be for 
subclinical mastitis (not clinical). Without an FDA-required milk discard or meat withhold cost, we expect producers to be more 
motivated to identify and treat cows at the subclinical stage. In addition, we expect that Re-Tain® likely will be priced at a premium to 
the traditional antibiotic products currently on the market, which are all sold subject to milk discard and meat withhold requirements. 
To validate our confidence in the value proposition of our product, we initiated a stochastic model led by researchers at Michigan 
State University. This model simulated the dynamics of subclinical mastitis detected during the first week of lactation. The study 
involved assessing probabilities of events, both production and health related, and their associated costs using a model grounded in 
pathogen-specific assumptions drawn from peer-reviewed literature. The study indicated that treatment with our product generated a 
positive economic benefit and was the optimal economic strategy for treating subclinical mastitis in most herds. The extent of the 
economic benefit varies depending on factors such as bacteriological cure rates, parity of the animal and the cost of Re-Tain®. These 
findings, which were subsequently published in the Journal of Dairy Science in January 2024, will guide our pricing strategies.   

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ImmuCell Corporation 

It is difficult to accurately estimate the potential size of the subclinical mastitis market because presently this disease is largely 

left untreated. We believe that approximately 20% to 40% of the U.S. dairy herd is infected with subclinical mastitis at any given time. 
This compares to approximately 2% of the U.S. herd that is thought to be infected with clinical mastitis, where approximately $65 
million per year is spent on drug treatments. Rarely is an industry revolutionized overnight. Getting producers to change protocols to 
make subclinical mastitis treatment a standard and routine procedure is going to take initiative, but we believe producers are eager for 
something new and better since the FDA has not approved an intramammary treatment within the last 20 years. Similar market 
opportunities are likely to exist outside the United States. We believe the use of Re-Tain® could be expanded, with additional data and 
regulatory approval, to support treatment late in lactation. We also believe there may be a market for Re-Tain® in small ruminants, 
where the majority of mastitis cases are caused by strep-like organisms aligned with our effectiveness data.   

Based on consultations with industry experts and key opinion leaders, we have opted to carefully control the launch of this novel 
product over the first 18 to 24 months after FDA approval, as we seek to transform the way that mastitis is treated in the dairy industry 
over the long term, which we refer to as our “Controlled Launch” strategy. Our goal is to help early adopters select treatment 
candidates, develop easy to use protocols, optimize treatment results and realize a positive return on their investment. We intend to 
limit initial distribution of Re-Tain® to a level that enables our sales team to select the optimal dairy farms at which to introduce Re-
Tain® and to limit the initial numbers of participating farms so that the desired levels of support and guidance relating to effective 
usage of Re-Tain® can be provided with our available resources. Our overarching objective is to minimize the risk of early-stage 
unsatisfactory outcomes that could harm the longer-term prospects and market acceptance of Re-Tain®. This strategy is also prudent 
since our saleable inventory is fixed until an FDA-approved alternative contract manufacturer for aseptic filling is identified or our 
own aseptic filling capability is developed and approved by the FDA. While we are dedicated to increasing our sales revenue, we must 
consider the damage a mass market strategy could cause to the long-term value of the product. We have seen products sold by much 
larger companies that were substantially damaged by such failed market launch strategies. We continue to develop detailed launch 
plans, focusing on the readiness of dairy operators to successfully introduce Re-Tain® to their herds. We believe that these prudent 
steps, while potentially leading to lower initial Re-Tain® revenues, may create a smooth and successful launch and could safeguard 
the longer-term performance of our investment in Re-Tain®.   

We expect the DS production facility that we constructed to have initial annual production capacity sufficient to meet 

approximately $7 million to $10 million in sales of Re-Tain® at current production yields without factoring in potential yield 
improvements, but our supply of finished Drug Product (DP) will be limited until we find an alternative aseptic formulation and filling 
capability, as discussed above. This production capacity estimate does not yet reflect any inventory build strategies or ongoing yield 
improvement initiatives. We have available space in our existing facilities to double the production capacity by installing a second 
equipment train. A decision on whether to use this space for a doubling of the DS production capacity or for in-house aseptic 
formulation and filling DP equipment will be made post-approval. Our objective is to supply initial market launch with approximately 
100,000 to 150,000 doses of Re-Tain® (enough to treat up to 50,000 cows with three doses per cow) that would be aseptically 
formulated and filled by our DP manufacturer. The expiry dates on this product would be 18-24 months after the date of production, 
meaning that product expiry could be approximately between September of 2025 and March of 2026. We may not reach 50,000 cows 
during the Controlled Launch. Further, early adopters may be offered discounted or promotional goods as an incentive to collaborate 
with us on data collection during the Controlled Launch. We are expecting a pause in supply to the market after the Controlled Launch 
after goods produced by our contract DP manufacturer are consumed and before we obtain FDA approval of an alternative DP 
manufacturing option. Although these projections are subject to many risks and uncertainties (some of which are detailed in this 
Annual Report), if executed correctly, we believe this strategy will lend itself to a more gradual adoption curve but higher and more 
sustainable sales over the long-term. In an effort to provide greater visibility into the launch of Re-Tain®, we have expanded Note 17, 
“Segment Information”, to the accompanying audited financial statements to now display a break-out of our financial results among 
the following three components of our business: i) Scours, ii) Mastitis and iii) Other, in order to allow investors to see our progress 
with both products. 

Through our anticipated growth in sales of the First Defense® product line, and as additional resources are dedicated to 
production, sales, marketing and technical services, it is our objective to exceed our total product sales of approximately $17.5 million 
achieved during the year ended December 31, 2023 as soon as possible. Our longer-term goal is to exceed $35 million of annual total 
product sales as soon as possible during the four-year period after the market launch of Re-Tain®. 

Product Development 

Most of our product development spending has been focused on the development of Re-Tain®, our purified Nisin treatment for 
subclinical mastitis in lactating cows. During the 24-year period that began on January 1, 2000 and ended on December 31, 2023, we 
invested an aggregate of approximately $28.1 million (excluding depreciation and the capital cost of our DS production facility) in the 
development of this product. This estimation reflects only direct expenditures and includes no allocation of product development or 
administrative overhead expenses. Approximately $2.9 million of this investment was offset by related product licensing revenues and 

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grant income, most of which was earned from 2001 to 2007.   

ImmuCell Corporation 

During 2000, we acquired an exclusive license from Nutrition 21, Inc. (formerly Applied Microbiology Inc. or AMBI) to develop 

and market Nisin-based products for animal health applications, which allowed us to initiate the development of Re-Tain®. In 2004, we paid 
Nutrition 21 approximately $965,000 to buy out this royalty and milestone-based license to Nisin, thereby acquiring control of the animal 
health applications of Nisin. Nisin is a well characterized substance, having been used in food preservation applications for over 50 years. 
Food-grade Nisin, however, cannot be used in pharmaceutical applications because of its low purity. A much less pure preparation of our 
active ingredient, Nisin, is commonly used as a food preservative and has been given “Generally Regarded as Safe” (GRAS) status by 
the FDA. We are also investigating potential applications of Nisin for other animal health applications as well as for humans. Our 
Nisin technology includes patented processing and purification methods to achieve pharmaceutical-grade purity. 

During 2004, we entered into a product development and marketing agreement with Zoetis (formerly Pfizer Animal Health, a 
division of Pfizer, Inc.) covering this product. That company elected to terminate the agreement in 2007. We believe that this decision 
was not based on any unanticipated efficacy or regulatory issues. Rather, we believe the decision was primarily driven by a marketing 
concern relating to their fear that the milk from treated cows could interfere with the manufacture of certain cultured dairy products. Due 
to the zero-milk discard feature, there is a risk that Nisin from the milk of treated cows could interfere with the manufacture of certain (but 
not all) commercial cultured dairy products, such as some kinds of cheese and yogurt, if a process tank contains a high enough percentage 
of milk from treated cows. The impact of this potential interference ranges from a delay in the manufacturing process (which does happen 
at times for other reasons) to the less likely stopping of a cheese starter culture. Milk from cows that have been treated with our product that 
is sold exclusively for fluid milk products presents no such risk. We worked with scientists and mastitis experts to conduct a formal risk 
assessment to quantify the impact that milk from treated cows may have on cultured dairy products. This study concluded that the dilution 
of milk from treated cows through comingling with milk from untreated cows during normal milk hauling and storage practices reduces 
the risk of interference with commercial dairy cultures to a negligible level when the product is used in accordance with the product label. 
Further, we believe that such a premium-priced product will be used selectively, which reduces the risk of cheese interference and is 
consistent with modern “precision dairying” practices that discourage the indiscriminate use of drug treatments. Among the measures that 
we intend to deploy will be detailed guidance on limiting the portion of a herd that is treated with Re-Tain® at any one time in order to 
avoid concentration levels in the milk that could lead to the rejection of the contents in a cheese tank. 

Our second most important product development initiatives (in terms of dollars invested and, we believe, potential market 
impact) have been focused on other improvements, extensions or additions to our First Defense® product line. During the second quarter of 
2009, we entered into a perpetual, exclusive license with the Baylor College of Medicine covering the underlying rotavirus vaccine 
technology used to generate the specific antibodies for use with animals. We achieved product license approval and initiated market 
launch of this product, Tri-Shield First Defense®, during the fourth quarter of 2017. During the third quarter of 2018, we obtained 
approval from the Canadian Food Inspection Agency to sell Tri-Shield® in Canada. We initiated sales in Canada through our in-
country distributor during the fourth quarter of 2019. We achieved USDA approval of our bivalent gel tube formulation (formerly 
marketed as First Defense Technology®) during the fourth quarter of 2018 and have re-branded this product format as Dual-Force First 
Defense®. We are currently working to establish USDA claims for our bivalent bulk powder formulation of First Defense Technology®.   

We are also working to expand our product development pipeline of antimicrobials that can be used as alternatives to traditional 
antibiotics through expansions of our Nisin technology and yield improvements. We intend to begin new development projects that are 
aligned with our core competencies and market focus. We also remain interested in acquiring, on suitable terms, other new products and 
technologies that fit with our sales focus on the dairy and beef industries when we have adequate cash reserves. 

Competition 

Our competition in the animal health market includes other biotechnology companies and major animal health companies. Most, 
if not all, of these competitors have substantially greater financial, marketing, manufacturing and human resources and more extensive 
product development capabilities than we do. 

There are several other products on the market (some with claims and some without) that are delivered to newborn calves to 

prevent scours. We believe that the First Defense® product line offers two significant competitive advantages. First, the First 
Defense® product line is the only calf-level product that provides protection against E. coli, coronavirus and rotavirus, three of the 
leading causes of calf scours. Second, being derived from colostrum, our product offers Immediate ImmunityTM through antibodies 
that both function at the gut level and are absorbed into the blood stream for future protection. All formats of our product can be 
administered immediately after birth and are not negatively affected by maternal colostrum. 

Zoetis sells a product (Calf-Guard®) that competes directly with the First Defense® product line in preventing scours via oral 

delivery to newborn calves. Their product is a modified-live virus vaccine. Newborn calves respond poorly to vaccines and the 
immune system must be given time to develop a response to vaccines. Both our product and Calf-Guard® carry claims against 

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ImmuCell Corporation 
coronavirus and rotavirus infections, but this competing product does not carry a claim against E. coli infections like our product does. 
It is common practice to delay colostrum feeding when dosing a calf with Calf-Guard® so that the antibodies in the colostrum do not 
inactivate this vaccine product. There is no nutritional or health benefit to withholding milk from newborn calves. In contrast, we 
encourage the feeding of four quarts of high quality colostrum immediately after birth when dosing a calf with our product, which is 
standard practice for good calf health. Because the antibodies in our product would likely work to inactivate a modified-live virus 
vaccine, rendering it useless or less useful, our product label historically included a precaution that First Defense® should not be used 
within five days of such a vaccine. During the first quarter of 2015, the USDA granted us permission to remove this precaution from 
our label, and we have done so. We believe that this precaution should be required on the Calf-Guard® label to prevent inactivation of 
that product by First Defense® antibodies or by colostrum. Our product is priced at a premium to Calf-Guard®. 

During the fourth quarter of 2016, Merck launched a new competing product into this market space. This product (BOVILIS® 

Coronavirus) is a modified-live virus intranasal vaccine that carries a claim against coronavirus only. Around the end of 2019, Elanco 
Animal Health gave notice to the market that it had discontinued the manufacture of its competing products, Bovine Ecolizer® and 
Bovine Ecolizer + C20, and subsequently exited the market during the first quarter of 2021. This product was the smallest of our three 
significant calf-level competitors.   

When compared to the other USDA-approved calf-level scours preventatives, we lead in both sales dollars and calves treated 

within the U.S. market. This product category is comprised of the three primary brands discussed above that are given either orally or 
intranasally to newborn dairy and beef calves immediately after birth. With the rotavirus claim for our product (Tri-Shield First 
Defense®), we are now also competing against dam-level vaccine products that are given to the mother cow to increase the antibody 
level against scours-causing pathogens in the colostrum that she produces for her newborn. Those products are sold by Elanco (Scour 
Bos™), Merck (Guardian®) and Zoetis (ScourGuard®). Despite the best-managed dam vaccine program, colostrum quality is naturally 
variable and newborn calves do not always get the antibodies they need from maternal colostrum. We believe that the measured dose 
of antibodies in our product provides more consistent protection than such vaccine products. 

We would consider any company that sells an antibiotic to treat mastitis, such as Boehringer Ingelheim, Merck Animal Health 

and Zoetis, to be among the potential competitors with respect to Re-Tain®. We expect the FDA to grant a period of five years of 
market exclusivity for our product (meaning the FDA would not grant approval to a second NADA with the same active drug for a 
period of five years after the first NADA approval is granted) under Section 512(c)(2)F of the Federal Food, Drug, and Cosmetic Act. 
Our Nisin A is produced from our high-yielding, proprietary L. lactis strain and purified to a high level, providing us with a level of 
protection over a competitor that might try to develop a similar product. 

We may not be aware of competition that we face, or may face in the future, from other companies. Our competitive position 

will be highly influenced by our ability to attract and retain key scientific, manufacturing, managerial and sales and marketing 
personnel, to develop and effectively produce and market proprietary technologies and products. We need to obtain USDA, FDA or 
foreign approvals for new products to effectively promote and market our products. We must have available properly-licensed, 
efficient and effective raw material and finished product manufacturing resources to continue to profitably sell our current products. 
We currently compete on the basis of product performance, price, distribution capability and customer support. We continue to 
monitor our network of independent distributors to maintain our competitive position. 

Intellectual Property 

We own a broad collection of registered and unregistered intellectual property rights relating to our research, products and 

processes. These rights include patents, copyrights, trademarks, trade dress, trade secrets, know-how and other intellectual property 
rights in the United States and other countries. We believe the ownership of our intellectual property rights is an important factor in 
our business and that our success depends in part on such ownership. We also rely heavily on the innovative skills, technical 
competence and marketing abilities of our personnel. The Nisin A that is produced from our proprietary strain of L. lactis is an 
essential component of our Re-Tain® product and related intellectual property. We enter into and rely on confidentiality and 
proprietary rights agreements with our employees, contractors and business partners to protect our trade secrets, proprietary 
developments and confidential information.   

We own U.S. Patent No. 10,023,617 entitled “Methods and Systems of Producing Pharmaceutical Grade Lantibiotics”, which 
covers key, novel and proprietary aspects of our manufacturing process for preparing pharmaceutical-grade Nisin and was issued during 
the third quarter of 2018. In the future, we may file additional patent applications for certain products under development. There can 
be no assurance that patents will be issued with respect to any pending or future applications. In some cases, we have chosen (and may 
choose in the future) not to seek patent protection for certain products or processes. In those instances, we have sought (and may seek 
in the future) to maintain the confidentiality of any relevant intellectual property and other proprietary rights through operational 
measures and contractual agreements. 

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ImmuCell Corporation 

We own numerous trademarks and trade dress that are very important to our business and have several trademark and trade dress 

registrations in the United States, Canada and Iran. We own the following U.S. trademark registrations: IMMUCELL, FIRST 
DEFENSE, FD FIRST DEFENSE (& Design), FIRST DEFENSE TECHNOLOGY, TRI-SHIELD FIRST DEFENSE, TRI-
SHIELD FIRST DEFENSE (& Design), YOUR CALF CREW, BEYOND VACCINATION, BEYOND VACCINATION (& 
Design), CALF HERO, DUAL-FORCE, TRI-SHIELD and RE-TAIN. We also own U.S. registrations claiming rights in the color 
blue for our blue gel and blue bolus FIRST DEFENSE products. We also own common law rights in the IMMEDIATE 
IMMUNITY trademark and other trademarks.   

Government Regulation 

We believe that we are in compliance with current regulatory requirements relating to our business and products. The manufacture 

and sale of animal health biologicals within the United States is generally regulated by the USDA. We have received USDA and 
Canadian Food Inspection Agency approval for the bolus format of First Defense® and for the gel tube formats of Tri-Shield First 
Defense® and Dual-Force First Defense®. Re-Tain® is regulated by the FDA, which regulates veterinary drugs. Regulations in the 
European Union will likely require that Re-Tain® be sold subject to a milk discard requirement in that territory, although the duration of 
the milk discard requirement may be shorter than the discard requirement applicable to competing antibiotic products in that market. 
Comparable agencies exist in foreign countries, and foreign sales of our products will be subject to regulation by such agencies. Many 
countries have laws regulating the production, sale, distribution or use of biological products, and we may have to obtain approvals from 
regulatory authorities in countries in which we propose to sell our products. Depending upon the product and its applications, obtaining 
regulatory approvals may be a relatively brief and inexpensive procedure or it may involve extensive clinical tests, incurring significant 
expenses and an approval process of several years’ duration. We generally rely on in-country experts to assist us with or to perform 
international regulatory applications. 

Employees 

We currently employ 79 employees (including 5 part-time employees) in comparison to 74 employees (including 7 part-time 
employees) approximately a year ago. Approximately 51 full-time equivalent employees are engaged in quality and manufacturing 
operations, 13 full-time equivalent employees in sales and marketing, 7 full-time equivalent employees in product development 
activities (primarily supporting facility maintenance and operation, regulatory filings and commercial scale-up for Re-Tain®) and 6 
full-time equivalent employees in finance and administration. As needed, we augment our staff with contracted temporary employees. 
All of our employees are required to execute non-disclosure and invention assignment agreements (and some are required to execute 
non-compete agreements) intended to protect our rights in our proprietary products. We are not a party to any collective bargaining 
agreement and consider our employee relations to be excellent. 

Public Information 

As a reporting company, we file quarterly and annual reports with the Securities and Exchange Commission (SEC) on Form 10-

Q and Form 10-K, respectively. We also file current reports on Form 8-K, whenever events warrant or require such a filing. The 
public may read and copy any materials that we file with the SEC at the SEC’s Public Reference Room at 450 Fifth Street, N.W., 
Washington, D.C. 20549. The public may obtain information on the operation of the Public Reference Room by calling the SEC at 1-
800-SEC-0330. The SEC maintains an internet site that contains reports, proxy and information statements and other information 
about us that we file electronically with the SEC at http://www.sec.gov. Our internet address is http://www.immucell.com. References 
to our website in this Annual Report are inactive textual references only and the content of our website should not be deemed 
incorporated by reference for any purpose. 

ITEM 1A— RISK FACTORS 

OUTLINE TO ITEM 1A – RISK FACTORS 

-  Financial Risks 

-  Product Risks 

-  Regulatory Risks 

-  Economic Risks Pertaining to the Dairy and Beef Industries 

- 

Small Size of the Company 

-  Global Risks 

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-  Risk Pertaining to Common Stock 

ImmuCell Corporation 

-  Other Risks 

Financial Risks 

Gross margin on product sales: One of our goals is to achieve a gross margin (before related depreciation expenses) as a 
percentage of total sales of 45% or more after the initial launch of new products. Depreciation expense will be a larger component of 
costs of goods sold for Re-Tain® than it is for the First Defense® product line. Gross margins generally improve over time, but this 
anticipated improvement may not be realized for Re-Tain®. Many factors discussed in this Annual Report (including inflation, cost 
increases, supply-chain disruptions and the rising price of oil and other commodities and supplies) impact our costs of goods sold. 
There is a risk that we are not able to achieve our gross margin goals, which would adversely affect our operating results and could 
impact our future operating plans. We missed our gross margin goals in 2023 and 2022 with realized gross margins of 22% and 41%, 
respectively. There is also a risk that our plans to maintain or improve our gross margin may not be realized due to cost increases, 
additional manufacturing contamination events, production equipment failures, the inability to raise our selling prices, or any 
combination of these factors. In addition, such negative events, depending on their severity, could deplete our cash resulting in an 
inability to fund our business. 

Exposure to interest rates and debt service obligations: Rising interest rates could negatively affect the operating costs of dairy 

and beef producers and thus put further financial pressure on an already stressed business sector, which could indirectly, but materially 
and adversely, affect our business. During the first quarter of 2020, we removed the direct aspect of this particular exposure to our 
business by refinancing our bank debt (with the exception of our line of credit) with fixed rate notes. Our mortgage debt outstanding 
as of December 31, 2023 was $5.8 million bearing interest at the fixed rate of 3.53% per annum. Our equipment loans outstanding as 
of December 31, 2023 were $2.6 million bearing interest at the fixed rate of 3.5% per annum. The two State of Maine loans 
aggregating $754,000 as of December 31, 2023 bear interest at the fixed rate of 5% per annum. The $3 million in debt that we secured 
during the third quarter of 2023 bears interest at the blended fixed rate of 7.33% per annum with an outstanding balance of $2.9 
million as of December 31, 2023. Our outstanding debt as of December 31, 2023 aggregating $12.1 million bears interest at the 
blended fixed rate of 4.51% per annum. Increasing interest rates would negatively impact the cost of any future borrowings. This was 
experienced on the new debt facilities aggregating $3 million that we closed during the third quarter of 2023. A decline in sales or 
gross margin, coupled with this debt service burden, could impair our ability to fund our capital and operating needs and objectives. 
The additional debt we incurred to fund our growth objectives has significantly increased our total debt service costs. We are obligated 
to make principal and interest payments aggregating approximately $2.0 million during both of the years ending December 31, 2024 
and 2025. See Note 10 to the accompanying audited financial statements for more details about our debt. 

Debt covenants: Our bank debt is subject to certain financial covenants. We are required to meet a minimum debt service 
coverage (DSC) ratio of 1.35. Our actual DSC ratios were 0.44, 2.68 and 2.03 for the years ended December 31, 2022, 2021 and 2020, 
respectively. There can be no assurance that we can exceed that required level in subsequent years. By negotiation with our lender in 
connection with a mortgage debt financing during the first quarter of 2022, the required minimum DSC ratio was reduced to 1.0 for 
the year ending December 31, 2022. Subsequently, our lender waived the required compliance with this rate for the year ended 
December 31, 2022. During the first quarter of 2023, the DSC ratio covenant for the year ending December 31, 2023 was waived by 
our lender. Instead, we were required to meet a minimum DSC ratio requirement of 1.35 for the twelve-month periods ending June 30, 
2024, September 30, 2024 and December 31, 2024, and then again annually after that. During the first quarter of 2024, the DSC ratio 
covenant for the twelve-month period ending June 30, 2024 was preemptively waived by our lenders. If we are unable to achieve the 
required DSC ratio going forward or reach a favorable agreement with our lender regarding that requirement (including an amendment 
to or waiver of such requirement), we would be in violation of that covenant, which could result in unfavorable amendments to the 
terms of our bank debt or have other adverse impacts on our business and results of operations. 

Currency exchange fluctuation: We do not believe that currency exchange rates have had a significant effect on our revenues 
and expenses. However, future increases in the value of the U.S. dollar could affect our customers and the demand for our products. 
We hope to increase the level of our future sales of products outside the United States. The cost of our products to international 
customers could be affected by currency fluctuations. The decline of the U.S. dollar against other currencies could make our products 
less expensive to international customers. Conversely, a stronger U.S. dollar could make our products more costly for international 
customers. The current devaluation of the dollar makes Euro-based purchases more expensive for us. 

Inflation and supply disruptions: Inflation is having a material and adverse impact on almost all supplies we purchase and labor 

we hire and retain. Continuing or increasing inflationary trends could materially reduce our gross margin on product sales if we are 
unable or unwilling to impose offsetting price increases on our customers. The Consumer Price Index for All Urban Consumers (CPI-
U) during the year ended December 31, 2023, improved to 3.4% for all items before seasonal adjustment. This is down from 6.5% and 
7.0% during the years ended December 31, 2022 and 2021, respectively. We are facing significant production constraints, supply 

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ImmuCell Corporation 
disruptions and inflationary increases which were initially triggered, in large part directly or indirectly, by the COVID-19 pandemic. 
The extent and duration of the negative impact of the pandemic on the economics of our customers and on the demand for our 
products going forward are very difficult to assess. The dairy market, similar to many others, has been unstable as a result of the 
pandemic. The price paid to producers for milk has been very volatile. The Class III milk price has been extremely volatile since the 
onset of the pandemic. Market conditions have improved somewhat, but this volatility remains a concern. Additionally, like most 
input costs, the cost of grain and other feed is rising, which puts a strain on the profitability of our customers. There is also economic 
uncertainty for beef producers, as the supply chain is interrupted or otherwise adversely affected due to closures of processing plants 
and reduced throughput. This is a very unusual situation for farmers who work so hard to improve production quality and efficiency in 
order to help feed a growing population with high-quality and cost-effective proteins. The pandemic created risk and continues to 
create uncertainty and challenges for us and has created or contributed to global supply-chain disruptions and has affected 
international trade, while creating a worldwide health and economic crisis. Stock market valuations have declined and recovered 
somewhat but remain very volatile. Inflation has increased significantly, and tax rates may increase. There is a risk of a period of 
economic downturn, the severity and duration of which are difficult to know. Prior to the pandemic and the responsive federal 
economic stimulus programs, many feared the United States had taken on too much national debt. Now the debt load is significantly 
higher. A combination of the conditions, trends and concerns summarized above could have a corresponding negative effect on our 
business and operations, including the supply of the colostrum we purchase to produce our First Defense® product line, the demand 
for our products in the U.S. market and our ability to penetrate or maintain a profitable presence in international markets. We are 
experiencing shortages in key components and needed products, backlogs and production slowdowns due to difficulties accessing 
needed supplies and labor and other restrictions which increase our costs and affect our ability to consistently deliver our products to 
market in a timely manner. Our exposure to this risk is mitigated to some extent by the fact that our supply chain is not heavily 
dependent on foreign manufacturers, by our on-going cross-training of our employees, by qualifying alternate suppliers and 
components and by our early and continued compliance with recommended hygiene.   

Projection of net (loss) income: Generally speaking, our financial performance can differ significantly from management 
projections, due to numerous factors that are difficult to predict or that are beyond our control. Weaker than expected sales of the First 
Defense® product line could lead to less profits or deeper operating losses. The timing of FDA approval of Re-Tain® will have a 
material impact on our net (loss) income until sufficient commercial sales are generated and sustained.   

Risks associated with our funding strategy for Re-Tain®: The inability to maintain adequate cash and liquidity to support the 
commercialization of Re-Tain® is a risk to our business. Achieving FDA approval of our pharmaceutical-grade Nisin produced at 
commercial-scale is the most critical action remaining in front of us on our path to U.S. regulatory approval of Re-Tain®. Having 
completed the construction and equipping of the DS production facility (as described in more detail in ITEM 7 of this Annual Report) 
at a cost of approximately $20.8 million, we will continue to incur product development expenses to operate and maintain this facility 
until commercialization. Absent sufficient sales of Re-Tain® at a profitable gross margin, we would be required to fund all debt 
service costs from available cash and sales of the First Defense® product line, which would reduce, and could eliminate, our expected 
profitability going forward and significantly reduce our cash flows.   

Uncertainty of market size and product sales estimates: Estimating the size of the total addressable market and future sales 

growth potential for our First Defense® product line is based on our experience and understanding of market dynamics but is 
inherently subjective. Estimating the size of the market for any new product, such as Re-Tain®, involves more uncertainties than do 
projections for established products. We do not know whether, or to what extent, our products will achieve, maintain or increase 
market acceptance and profitability. Some of the uncertainties surrounding Re-Tain® include the product’s effectiveness against 
currently prevalent pathogens, market acceptance, the effect of a premium selling price on market penetration, cost of manufacture, 
competition from new and existing products sold by substantially larger competitors with greater market reach and promotional 
resources and other risks described under “Product Risks” – “Sales risks pertaining to Re-Tain®” below. Since Re-Tain® is a novel 
approach to treating mastitis, there are many uncertainties with regards to how quickly and to what extent we can develop the 
subclinical mastitis treatment market. We believe that polypeptide antimicrobial technology may be viewed positively (relative to 
traditional antibiotics). If realized, this may offset some of these risks and result in better overall market acceptance. 

Net deferred tax assets: The realizability of our net deferred tax assets is a subjective estimate that is contingent upon many 

variables. During the second quarter of 2018, we recorded a full valuation allowance against our net deferred tax assets that 
significantly increased our net loss in comparison to other periods. This non-cash expense could be reversed, and this valuation 
allowance could be reduced or eliminated, if warranted by our actual and projected profitability in the future. We will continue to 
assess the need for the valuation allowance each quarter. 

12 

 
 
 
Product Risks 

ImmuCell Corporation 

Product risks generally: We set objectives for our products that we believe we can achieve, but the achievement of such goals is 

not a certainty. The sale of our products is subject to production, financial, efficacy, regulatory, competitive and other market risks. 
Elevated standards to achieve and maintain regulatory compliance required to sell our products continue to evolve. Failure to achieve 
acceptable biological yields from our production processes can materially increase our costs of goods sold and reduce our production 
output, leading to lower margins and/or an order backlog that could adversely affect our customer relationships and operating results. 
First Defense® is sold, and we expect Re-Tain® to be sold, at significant price premiums relative to competitive products. There is no 
assurance that we will continue to achieve market acceptance of the First Defense® product line, or achieve and sustain market 
acceptance of Re-Tain®, at a profitable price level or that we can continue to manufacture our products at a low enough cost to result 
in a sufficient gross margin to justify their continued manufacture and sale. As we bring Re-Tain® to market, these risks could be 
heightened by the additional uncertainties associated with introducing a new product requiring a shift in customer behavior.   

Contamination events and equipment failures in our production process: During 2023 and 2022, we experienced certain 

contamination events and equipment failures in our production process that resulted in scrapped inventory and a slowdown of our 
production process and had a significant impact on our operating results. We are at risk of further such production contaminations or 
equipment failures resulting in more scrapped inventory if we do not continue to improve our farm operations and implement other 
necessary improvements from farms to finished goods. The realization of this risk following the above-mentioned contamination 
events did result in a slowdown of our production output during 2023 to remediate this problem, which led to less sales and gross 
margin during the year. Additional contamination events or equipment failures causing significantly less production output, depending 
on their severity, could deplete our cash resulting in an inability to fund our business operations.   

Sales risks pertaining to Re-Tain®: Actual or prospective Re-Tain® customers may decide to discontinue, reduce or avoid usage 

of Re-Tain® due to the following risks:   

1) A rejection of a tank of milk by a positive milk inhibitor test because too much of the milk in a bulk tank is comprised of milk 

from cows being treated with Re-Tain®, when tested randomly for inhibitors by a milk hauler, which could create legal liability.   

2) A failed or stalled cheese tank occurs when a Nisin susceptible cheese starter culture is impacted by residues in milk that 
exceed our on-farm treatment recommendations, which aims to limit concentrations of bulk tanks or tankers to 1% of milk from cows 
treated with Re-Tain® or is not effectively diluted through the milk collection and transportation system. After we study this potential 
impact during our Controlled Launch of Re-Tain®, we may decide to seek a post-approval label change requiring a short discard of 
milk, which may be limited to just the treated quarter of the cow.   

3) Producers’ current practice generally is to treat only clinical mastitis, which has the visual indicator of abnormal milk. In 
order to gain market penetration for Re-Tain®, we will need to change that practice and increase awareness of the importance of 
treating subclinical disease. This will require the producers’ ability and willingness to diagnose without visual indicators. Users of Re-
Tain® could have unsatisfactory treatment outcomes if they lack the equipment needed to measure and monitor somatic cell counts 
(SCC) of the herd or individual cows (for which data is needed). This risk limits our access to treatment cows because about 40% of 
farms do not presently have access to this kind of testing at the cow level, and thus are not good candidates for the use of Re-Tain®. 

4) Lower than anticipated treatment cure rates could be experienced because the product is administered to cows that we would 

not identify as the best treatment candidates based on SCC data. 

5) Lower than anticipated treatment cure rates could be experienced because the product is administered to cows that are 

infected with pathogens outside of our label claims. 

6) Off-label use of our product in cows infected with clinical mastitis before we have run the required studies and achieved a 

label claim extension for this disease state, resulting in negative treatment outcomes and potential legal liability. 

7) Producers either do not choose to use it or might use it improperly, rather than follow our label instructions to administer one 

dose after each of three consecutive milkings, or they may limit use within the herd in an abundance of caution to avoid the negative 
outcomes described above.   

Reliance on sales of the First Defense® product line: We are reliant on the market acceptance of the First Defense® product line 

to generate product sales and fund our operations. Our business would not have been profitable during the years ended December 31, 
2012, 2013, 2015 and 2016, during the nine-month periods ended September 30, 2017 or during the three-month periods ended March 
31, 2019, December 31, 2020, June 30, 2021, September 30, 2021, December 31, 2021 and March 31, 2022 without the gross margin 
that we earned on sales of the First Defense® product line. Our anticipated return to more consistent profitability is contingent upon 
the gross margin we earn from First Defense®.   

13 

 
ImmuCell Corporation 
Concentration of sales: Sales of the First Defense® product line aggregated 99% of our total product sales during both of the 

years ended December 31, 2023 and 2022. Our primary customers for the majority of our product sales (91% and 92% during the 
years ended December 31, 2023 and 2022, respectively) are in the U.S. dairy and beef industries. Product sales to international 
customers, who are also in the dairy and beef industries, aggregated 9% and 8% of our total product sales during the years ended 
December 31, 2023 and 2022, respectively. The concentration of our sales from one product into just two markets (the dairy and beef 
markets) is a risk to our business. The animal health distribution segment has been aggressively consolidating over the last few years, 
with larger distributors acquiring smaller distributors. A large portion of our product sales (79% and 73% during the years ended 
December 31, 2023 and 2022, respectively) was made to two large distributors. A large portion of our trade accounts receivable (79% 
and 69% as of December 31, 2023 and 2022, respectively) was due from these two distributors. We have a good history with these 
distributors, but the concentration of sales and accounts receivable with a small number of customers does present a risk to us, 
including risks related to such customers experiencing financial difficulties or altering the basis on which they do business with us in a 
manner unfavorable to us.   

Production capacity constraints: We invested $3.7 million from 2019 to the first quarter of 2022 to increase our production 
capacity (in terms of annual sales dollars) for the First Defense® product line from approximately $16.5 million to approximately $23 
million based on current selling prices and estimated production yields. During the fourth quarter of 2021, we reached this new, higher 
level of production output on an annualized basis. During 2021, we initiated three additional investments aggregating $4.7 million to 
increase our estimated annual production capacity for the First Defense® product line to approximately $30 million, which we 
completed at the end of 2022. We are making initial plans and investments to further increase our production capacity in 2024 and after. 
While this capacity expansion investment has proceeded very close to budget, there is a risk of cost overruns in our ongoing projects 
and any future production expansions that we may undertake, and a risk that we will not be able to achieve our production capacity 
growth objectives on a timely basis, resulting in a continuing or increasing shortfall in supply to the market. The inability to meet 
market demand for our products is a risk to our business. The historically large backlog of orders, as well as any ongoing order backlog, 
presents a risk that we could lose customers during this period that are not easily regained thereafter, when our production capacity is 
expected to meet or exceed sales demand. Our long-term capital plan to continue to expand the First Defense® product line requires 
ongoing review of equipment capacity and utilization across the manufacturing value stream at the 56 Evergreen Drive facility and our 
leased facilities at 175 Industrial Way, as well as assessment of costs, functional obsolescence and reliability of equipment. This review 
and assessment could identify a need to fund unexpected equipment maintenance or replacement costs.   

Product liability: The manufacture and sale of our products entails a risk of product liability. Our exposure to product liability is 

mitigated to some extent by the fact that our products are directed towards the animal health market. We have maintained product 
liability insurance in an amount which we believe is reasonable in relation to our potential exposure in this area. We have no history of 
claims of this nature being made. 

Regulatory Risks 

Regulatory requirements for the First Defense® product line: First Defense® is sold in the United States subject to a product 

license from the Center for Veterinary Biologics, USDA, which was first obtained in 1991, with subsequent approvals of line 
extensions in 2017 and 2018. As a result, our operations are subject to periodic inspection by the USDA, and we are at risk of an 
unfavorable outcome from such inspections. The potency of serial lots is directly traceable to the original serial used to obtain the 
product performance claims (the Reference Standard). Due to the unique nature of the label claims, host animal re-testing is not 
required as long as periodic laboratory analyses continue to support the stability of stored Reference Standard. To date, these analyses 
have demonstrated strong stability. However, if the USDA were not to approve requalification of the Reference Standard, additional 
clinical studies could be required to meet regulatory requirements and allow for continued sales of the product, which could interrupt 
sales and adversely affect our operating results. Territories outside of the United States may require additional regulatory oversight 
that we may not be able to meet with our current facilities, processes and resources. During July 2023, the USDA issued a Voluntary 
Stop Distribution and Sale (VSDS) and a Hold Release on First Defense® preventing us from shipping product (while not restricting 
us from continuing to produce inventory) until two inspectional observations were resolved. We promptly responded to the 
inspectional observations involved. On August 1, 2023, the USDA verbally rescinded the VSDS, and on August 4, 2023, the USDA 
verbally rescinded the Hold Release, allowing us to resume normal shipping during the week of August 7, 2023. There is a risk that 
we will become subject to similar or additional regulatory actions in the future. In these cases, the resulting interruption in sales could 
have a material and adverse effect on our operating results.   

Regulatory requirements for Re-Tain®: The commercial introduction of this product in the United States requires us to obtain FDA 

approval. Completing the development through to approval of the NADA by the FDA involves risk. While four of the five required 
Technical Sections have been approved, the regulatory development process timeline has been extensive (approximately 16 years from 
when the product rights were returned to us by a former partner in 2007) and has involved multiple commercial production strategies and 
multiple submissions of the Chemistry, Manufacturing and Controls (CMC) Technical Section. Most recently, we received an Incomplete 
14 

 
ImmuCell Corporation 

Letter from the FDA regarding this CMC Technical Section during the third quarter of 2022. This clarifies the required path to product 
approval. To reduce the risk associated with this process, we are working with a qualified contract manufacturer (Norbrook) for alignment 
of the required validations and DP manufacture and have met with the FDA to clarify filing strategy and requirements. Our CMC 
Technical Section submission is currently under review by the FDA as discussed in greater detail in ITEM 7 of this Annual Report under 
the caption, “Product Development Expenses and Strategy”, below. Early during the first quarter of 2024, the FDA conducted another 
pre-approval inspection of our DS facility. This resulted in the issuance of one deficiency as identified on the FDA’s Form 483. Since 
then, we have fully responded with data addressing the inspectional observation. However, our efforts continue to be subject to 
inspection and approval by the FDA and other factors outside of our control, and there remains a risk that the required FDA approvals 
of our product and facilities could be delayed or not obtained. The facility of our contract manufacturer is subject to similar inspectional 
obligations. International regulatory approvals would be required for sales of Re-Tain® outside of the United States, and there is a risk 
that these approvals would be or become too costly to pursue or be delayed or not obtained.   

Regulatory requirements limiting access to suppliers and customer base: Maine, where our principal executive office and 
manufacturing facilities are located, has adopted product reporting and phase-out requirements for per- and polyfluoroalkyl substances 
(“PFAS”). Maine’s statute requires that effective as of January 1, 2025 manufacturers of products with intentionally-added PFAS report 
the presence of such substances (and requires that such products cannot be sold in Maine unless the required reporting is made) and 
specifies that (subject to certain exceptions to be promulgated by the Maine Department of Environmental Protection) no product 
containing intentionally-added PFAS may be sold in Maine after January 1, 2030. This reporting requirement may limit our ability to 
access supplies from companies which are not in compliance with the state reporting requirements and may limit those customers to 
whom we may sell our products. The U.S. Environmental Protection Agency also has adopted a PFAS reporting law, which requires that 
importers of articles that contain PFAS report the presence of such substances to the extent such information is known or reasonably 
ascertainable. This reporting requirement may limit our ability to import supplies. 

Economic Risks Pertaining to the Dairy and Beef Industries 

The industry data referred to below is compiled from USDA databases. 

 Cattle count: The January count of all cattle and calves in the United States had steadily declined from 97,000,000 as of January 1, 

2007 to 88,500,000 as of January 1, 2014. Then this figure increased each year, reaching 94,800,000 as of January 1, 2019 before 
declining to 93,800,000 as of both January 1, 2020 and January 1, 2021. This count continued to decline to 92,100,000 as of January 
1, 2022 and to 88,800,000 as of January 1, 2023. This count dropped to 87,200,000 as of January 1, 2024. Reflecting seasonal trends, 
this figure was equal to 102,000,000, 101,000,000, 98,600,000 and 95,900,000 as of July 1, 2020, 2021, 2022, and 2023, respectively. 
A significant decline in the cattle count could negatively affect the size of our addressable market. 

Herd size: Prior to 1957, there were over 20,000,000 cows in the U.S. dairy herd. Prior to 1986, there were over 10,000,000 
cows in the U.S. dairy herd. From 1998 through 2021, the size (annual average) of the U.S. dairy herd ranged from the low of 9,011,000 
in 2004 to the high of 9,448,000 in 2021. This average declined to 9,402,000 during the year ended December 31, 2022 and then declined 
to 9,386,000 during the year ended December 31, 2023. A significant decline in the herd size could negatively affect the size of our 
addressable market. 

Milk cow price: The all-time high value (annual average) for a milk cow was $1,993 during 2015. Since then, this annual 
average value steadily declined to $1,205 during 2019 before increasing to $1,300 during 2020 and to $1,363 during 2021. This price 
for 2022 increased significantly to an average of $1,598, which is a 17% increase over 2021. The 2023 average price of $1,763 
represents a 10% increase over prior year. A significant decline in the milk cow price could negatively affect the size of our 
addressable market. 

Milk price: The dairy market, similar to many others, has been unstable for several reasons including as a result of the pandemic. 

The price paid to producers for milk has been very volatile. This market volatility, and the resulting impact on our primary end users, 
could negatively impact our ability to maintain and grow sales at a profitable level. The Class III milk price (an industry benchmark that 
reflects the value of product used to make cheese) is an important indicator because it defines our customers’ revenue level. This annual 
average milk price level (measured in dollars per hundred pounds of milk) reached its highest point (since these prices were first reported 
in 1980) during 2014 at $22.34 (peaking at $24.60 in September 2014), which price level has never been repeated. During the year ended 
December 31, 2020, this average milk price was equal to $18.16, but it was extremely volatile during the year due largely to disruption in 
demand related to the COVID-19 pandemic. The one-month fluctuation of 73% from a low of $12.14 in May 2020 to $21.04 in June 2020 
set an all-time record for variability. The average price for 2021 decreased by 6% to $17.08. This price average increased by 29% to $21.96 
during the year ended December 31, 2022. The average price decreased by 22% to $17.02 during the year ended December 31, 2023. The 
annual fluctuations in this milk price level are demonstrated in the following table: 

15 

 
 
 
ImmuCell Corporation 

Average Class III Milk Price During 
the Years Ended December 31, 

(Decrease) 
Increase 

2014 
2015 
2016 
2017 
2018 
2019 
2020 
2021 
2022 
2023 

$22.34 
$15.80 
$14.87 
$16.17 
$14.61 
$16.96 
$18.16 
$17.08 
$21.96 
$17.02 

(29%) 
(6%) 
9% 
(10%) 
16% 
7% 
(6%) 
29% 
(22%) 

Feed Costs: The actual level of milk prices may be less important than its level relative to feed costs. One measure of this 
relationship is known as the milk-to-feed price ratio, which represents the amount of feed that one pound of milk can buy. An increase in 
feed costs also has a negative impact on the beef industry and therefore could have a resulting negative impact on our business and results 
of operations.  This ratio varies farm-to-farm based on individual operating parameters. Since this ratio reached 3.24 in 2005, it has not 
exceeded 3.00. This ratio averaged 1.74 for 2021, amounting to a significant decline of 25% from the 2020 average of 2.32. This 
average has not been lower since 2012. During 2022, this ratio improved by 10% to 1.91. This ratio dropped to 1.69 during the year 
ended December 31, 2023. The following table demonstrates the annual volatility and the low values of this ratio recently: 

Average Milk-To-Feed Price Ratio During   
the Years Ended December 31, 

(Decrease) 
Increase 

2014 
2015 
2016 
2017 
2018 
2019 
2020 
2021 
2022 
2023 

2.54 
2.14 
2.26 
2.42 
2.05 
2.25 
2.32 
1.74 
1.91 
1.69 

(16%) 
6% 
7% 
(15%) 
10% 
3% 
(25%) 
10% 
(12%) 

Market volatility: While the number of cows in the U.S. herd and the production of milk per cow directly influence the supply of 

milk, the price for milk is also influenced by very volatile international demand for milk products.  Given our focus on the dairy and 
beef industries, the volatile market conditions and the resulting financial insecurities of our primary end users are risks to our ability to 
maintain and grow sales at a profitable level. These factors also heighten the challenge of selling premium-priced animal health 
products (such as Tri-Shield® and Re-Tain®) into the dairy market.   

Small Size of the Company 

Dependence on key personnel: We are a small company with approximately 79 employees (including 5 part-time employees). As 
such, we rely on certain key employees to support multiple operational functions, with limited redundancy in capacity. The loss of any 
of these key employees could adversely affect our operations until a qualified replacement is hired and trained, which could be even 
more challenging in the present difficult labor market. Our competitive position will be highly influenced by our ability to attract, retain 
and motivate key scientific, manufacturing, managerial and sales and marketing personnel. We will require increased staffing levels to 
operate our expanded First Defense® production capacity and to operate our Re-Tain® production facility. The cost of attracting and 
retaining the needed additional personnel in this current job market and inflationary environment could adversely affect our margins and 
profitability. 

Reliance on outside party to provide certain services under contract for us: We are exposed to additional regulatory compliance 

risks through the subcontractors that we choose to work with to produce Re-Tain®, who also need to satisfy certain regulatory 
requirements in order to provide us with the products and services we need. One example of this outside reliance is Norbrook, our DP 
contract manufacturer. Because Norbrook notified us of its intent to terminate its supply agreement with us, we initiated an investment of 
approximately $4 million during 2022 to construct and equip our own DP formulation and aseptic filling capability for Re-Tain® in our 
existing DS facility. Due to the loss in gross margin during 2023 caused by the slowdown in production output necessary to remediate 
product contamination events, we have decided to defer spending of approximately $2 million of these funds for the near term. The 
objective of this investment is to end our reliance on an outside party to perform these services for us. Actual project costs could exceed 

16 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
ImmuCell Corporation 

our current estimates. Completion of this project could be delayed due to a number of factors outside our control, including delays in 
equipment fabrication, equipment delivery or facility construction. In addition, there is a risk that we fail to achieve regulatory approval 
of the new facility or that such approval is delayed or requires significant additional expenditures to obtain. We are evaluating 
alternatives for DP supply going forward, which include the resumption of the investment in our own in-house DP services (when 
prudent based on our cash reserves) or another contract manufacturing agreement or a further extension with Norbrook. We face a 
supply interruption and adverse effects on the Controlled Launch of Re-Tain® after the DP supply provided from our contract 
manufacturer is consumed and until new supply from a new contract manufacturing agreement or our own formulation and aseptic 
filling facility is implemented.   

Competition from others: Many of our competitors are significantly larger and more diversified in the relevant markets than we 
are and have substantially greater financial, marketing, manufacturing and human resources and more extensive product development 
and sales/distribution capabilities than we do, including greater ability to withstand adverse economic or market conditions and 
declining revenues and/or profitability. Merck and Zoetis, among other companies, sell products that compete directly with the First 
Defense® product line in preventing scours in newborn calves. The scours product sold by Zoetis sells for approximately half the price 
of our product, although it does not have an E. coli claim (which ours does). With Tri-Shield®, we can compete more effectively 
against vaccines that are given to the mother cow (dam) to improve the quality of the colostrum that she produces for the newborn 
calf. Elanco, Merck and Zoetis provide these dam vaccine products to the market. There are many companies competing in the 
mastitis treatment market, most notably Boehringer Ingelheim, Merck and Zoetis. The subclinical mastitis products sold by these large 
companies are well established in the market and are priced lower than what we expect for Re-Tain®, but all of them involve 
traditional antibiotics and are sold subject to a requirement to discard milk during and for a period of time after treatment (unlike our 
product which does not carry an FDA-required milk discard or meat withhold. There is no assurance that our products will compete 
successfully in these markets. We may not be aware of other companies that compete with us or intend to compete with us in the 
future. 

Global Risks 

Russia’s unprovoked military invasion of Ukraine and the war in the Middle East: Russia’s unprovoked military invasion of 
Ukraine (and attack on its people) and the war in the Middle East are having a significant negative impact on the world economy, 
worsening trends that were already moving in an unfavorable direction. Among other exposures, the increasing price of oil is already 
impacting our transportation-related expenses materially, and we expect this supply stress to increase the cost of petroleum-based 
products that we purchase (mostly plastics). Both of these military actions could cause more stress on the global economy.   

Climate change: Our business, and our activities and the activities of our customers and suppliers, could be disrupted by climate 

change. Potential physical risks from climate change may include altered distribution and intensity of rainfall, prolonged droughts or 
flooding, increased frequency of wildfires and other natural disasters, rising sea levels, and a rising heat index, any of which could 
cause negative impacts to our and our customers’ and suppliers’ businesses. Increased temperatures and rising water levels may 
negatively impact our dairy and beef livestock customers by increasing the prevalence of parasites and diseases that affect food 
animals. The physical changes caused by climate change may also prompt changes in regulations or consumer preferences which in 
turn could have negative consequences for our and our customers’ businesses. Climate change may negatively impact our customers’ 
operations, through climate-related impacts such as increased air and water temperatures, rising water levels and increased incidence 
of disease in livestock. In addition, concerns regarding greenhouse gas emissions and other potential environmental impacts of 
livestock production have led to some consumers opting to limit or avoid consuming animal products. If such events affect our 
customers’ businesses, they may purchase fewer of our products, and our revenues may be negatively impacted. Climate driven 
changes could have a material adverse impact on the financial performance of our business and on our customers. In addition, 
increased frequency of natural disasters and adverse weather conditions may disrupt our manufacturing processes or our supply chain. 
These disruptions may have a material adverse effect on our business, financial condition, results of operations and/or cash flows. 

Bovine diseases: The potential for epidemics of bovine diseases such as Foot and Mouth Disease, Bovine Tuberculosis, 
Brucellosis and Bovine Spongiform Encephalopathy (BSE) presents a risk to us and our customers. Documented cases of BSE in the 
United States have led to an overall tightening of regulations pertaining to ingredients of animal origin, especially bovine. The First 
Defense® product line is manufactured from bovine milk (colostrum), which is not considered a BSE risk material. Future regulatory 
action to increase protection of the human food supply could affect the First Defense® product line, although presently we do not 
anticipate that this will be the case. 

Risks Pertaining to Common Stock 

Stock market valuation and liquidity: Our common stock trades on The Nasdaq Stock Market (Nasdaq: ICCC). Our average 
daily trading volume (which was 7,950 shares per day during the 20-day period ended March 8, 2024) is lower, our bid/ask stock price 

17 

 
ImmuCell Corporation 

spread can be larger and our share price can be more volatile than what other companies experience, which could result in investors 
facing difficulty selling their stock for proceeds that they may expect or desire. Our share price as of March 8, 2024 was $5.20. Most 
companies in the animal health sector have market capitalization values that greatly exceed our market capitalization of approximately 
$40 million as of March 8, 2024. Our product sales during the year ended December 31, 2023 were $17.5 million. This means that our 
market capitalization as of March 8, 2024 was equal to approximately 2.3 times our sales during the year ended December 31, 2023. 
Before gross margin from the sale of new products is achieved, our market capitalization may be heavily dependent on the perceived 
potential for growth from our product under development and may therefore be negatively affected by the related uncertainties and 
risks. 

Certain provisions might discourage, delay or prevent a change in control of our Company or changes in our management: 
Provisions of our certificate of incorporation, our bylaws, our Common Stock Rights Plan or Delaware law may discourage, delay or 
prevent a merger, acquisition or other change in control that stockholders may consider favorable, including transactions in which 
stockholders might otherwise receive a premium for their shares of our common stock. These provisions may also prevent or frustrate 
attempts by our stockholders to replace or remove our management. These provisions include: 

• 

• 

• 

• 

limitations on the removal of directors;  

advance notice requirements for stockholder proposals and nominations; 

the ability of our Board of Directors to alter or repeal our bylaws; 

the ability of our Board of Directors to refuse to redeem rights issued under our Common Stock Rights Plan or otherwise 
to limit or suspend its operation that would work to dilute the stock ownership of a potential hostile acquirer, potentially 
preventing acquisitions that have not been approved by our Board of Directors; and 

•  Section 203 of the Delaware General Corporation Law, which prohibits a publicly-held Delaware corporation from 

engaging in a business combination with an interested stockholder (generally defined as a person which together with its 
affiliates owns, or within the last three years has owned, 15% of our voting stock, for a period of three years after the date 
of the transaction in which the person became an interested stockholder) unless the business combination is approved in a 
prescribed manner. 

The existence of the foregoing provisions and anti-takeover measures could depress the trading price of our common stock or 

limit the price that investors might be willing to pay in the future for shares of our common stock. They could also deter potential 
acquirers of our Company, thereby reducing the likelihood of obtaining a premium for our common stock in an acquisition. 

No expectation to pay any dividends or repurchase stock for the foreseeable future: We do not anticipate paying any dividends 

to, or repurchasing stock from, our stockholders for the foreseeable future. Instead, we expect to use cash to fund product development 
costs and investments in our facilities and production equipment, and to increase our working capital and to reduce debt. Stockholders 
must be prepared to rely on market sales of their common stock after price appreciation to earn an investment return, which may never 
occur. Any determination to pay dividends in the future will be made at the discretion of our Board of Directors and will depend on 
our financial condition, results of operations, contractual restrictions, restrictions imposed by applicable laws, current and anticipated 
needs for liquidity and other factors our Board of Directors deems relevant. 

Possible dilution: We may need to access the capital markets again and issue additional common stock in order to fund our 

growth objectives, as described elsewhere in this Annual Report. Such issuances could have a dilutive effect on our existing 
stockholders. 

Other Risks 

Access to raw materials and contract manufacturing services: Our objective is to maintain more than one source of supply for the 

components used to manufacture and test our products that we obtain from third parties. However, we are experiencing difficulty in 
efficiently acquiring essential supplies. We have significantly increased the number of farms from which we purchase colostrum for the 
First Defense® product line. A significant reduction in farm capacity could make it difficult for us to produce enough inventory to meet 
customer demand. The specific antibodies that we purify from colostrum for the First Defense® product line are not readily available 
from other sources. We are and will be dependent on our manufacturing facilities and operations in Portland for the production of the 
First Defense® product line and Re-Tain®. We will be dependent on one manufacturer for the supply of syringes for Re-Tain®. We are 
currently dependent on a contract with Norbrook for the DP formulation and aseptic filling for supply of our Nisin DP through 2024. 
The facility we may resume constructing to perform these services in-house will be subject to FDA inspection and approval, the 
outcome and timing of which are not within our control. We expect to achieve FDA approval for use of our DP facility approximately 
two years from when this project is restarted. The potential alternative options for these services are narrowed considerably because our 

18 

 
ImmuCell Corporation 
product cannot be formulated or filled in a facility that also processes traditional antibiotics (i.e., beta lactams). Any significant damage 
to or other disruption in the services at any of these third-party facilities or our own facilities (including due to lack of financing, 
regulatory issues or non-compliance) would adversely affect the production of inventory and result in significant added expenses and 
potential loss of future sales. We face the risk of potential supply interruption and adverse effects on the market launch of Re-Tain® if 
we do not effectively manage the end of the DP supply provided from our contract manufacturer for orders scheduled for delivery 
through the end of 2024 (with product expiries that could be approximately between September of 2025 and March of 2026) to align 
with the new supply from a new contract manufacturing agreement or our own formulation and aseptic filling facility. 

Failure to protect intellectual property: The protection and enforcement of our intellectual property rights may require the 
expenditure of significant financial, managerial and operational resources. We rely on trademark, copyright and patent law, trade secret 
protection, agreements and other methods with our employees and others to protect our proprietary rights. However, we may be unable 
to adequately protect our intellectual property rights or prevent third parties from infringing or misappropriating our intellectual 
property rights. We may not be able to obtain registration for all intellectual property we seek to register, and effective intellectual 
property protection may not be available in every country in which our products are sold. In some cases, we have chosen (and may 
choose in the future) not to seek patent protection for certain products or processes. Instead, we have sought (and may seek in the future) 
to maintain the confidentiality of any relevant proprietary technology through trade secrets, operational safeguards and contractual 
agreements. Reliance upon trade secret, rather than patent protection may cause us to be vulnerable to competitors who successfully 
replicate (knock off) our manufacturing techniques and processes. Further, our confidentiality agreements may not effectively prevent 
disclosure of our proprietary information, technologies and processes and may not provide an adequate remedy in the event of 
unauthorized disclosure of such information. Others may independently develop similar trade secrets or technology or obtain access to 
our unpatented trade secrets or proprietary technology. Others may have filed patent applications and may have been issued patents 
involving products or technologies potentially useful to us or necessary for us to commercialize our products or achieve our business 
goals. If that were to be the case, there can be no assurance that we will be able to obtain licenses to such patents on terms that are 
acceptable to us. Any of our intellectual property rights may be challenged by others or invalidated through administrative process or 
litigation. Third parties may claim in the future, that we have infringed their intellectual property rights, which could result in significant 
costs and potential damages and license requirements. We may initiate claims or litigation against others for infringement, 
misappropriation or violation of our intellectual property rights or other proprietary rights or to establish the validity of such rights. 
However, we may be unable to discover or determine the extent of any infringement, misappropriation or other violation of our 
intellectual property rights and other proprietary rights. In addition, we may be unable to prevent third parties from infringing upon, 
misappropriating or otherwise violating our intellectual property rights and other proprietary rights. 

Increasing dependence on the continuous and reliable operation of our information technology systems: We rely on information 
systems throughout our company. Any disruption of these systems or significant security breaches could adversely affect our business. 
Although we maintain information security policies and employ system backup measures and engage in information system 
redundancy planning and processes, such policies, measures, planning and processes, as well as our current disaster recovery plan may 
be ineffective or inadequate to address all eventualities. As information systems and the use of software and related applications by us, 
our business partners, suppliers, and customers become more cloud-based, we become inherently more susceptible to cyberattacks. 
There has been an increase in global cybersecurity vulnerabilities and threats, including more sophisticated and targeted cyber-related 
attacks that pose a risk to the security of our information systems and networks and the confidentiality, availability and integrity of 
data and information. There are reports of increased activity by hackers and scammers since the COVID-19 pandemic. Russia’s 
unprovoked military invasion of Ukraine may elevate the risk of such cyberattacks. Any such attack or breach could compromise our 
networks and the information stored thereon could be accessed, publicly disclosed, lost, or stolen. While we have invested in our data 
and information technology infrastructure (including working with an information security technology consultant to assess and 
enhance our security systems and procedures, and periodically training our employees in such systems and procedures), there can be 
no assurance that these efforts will prevent a system disruption, attack, or security breach and, as such, the risk of system disruptions 
and security breaches from a cyberattack remains. We have not experienced any material adverse effect on our business or operations 
as a consequence of any such attack or breach but may incur increasing costs in performing the tasks described above. Given the 
unpredictability of the timing, nature and scope of such disruptions and the evolving nature of cybersecurity threats, which vary in 
technique and sources, if we or our business partners or suppliers were to experience a system disruption, attack or security breach that 
impacts any of our critical functions, or our customers were to experience a system disruption, attack or security breach via any of our 
connected products and services, we could potentially be subject to production downtimes, operational delays or other detrimental 
impacts on our operations. Furthermore, any access to, public disclosure of, or other loss of data or information, including any of our 
(or our customers’ or suppliers’) confidential or proprietary information or personal data or information, as a result of an attack or 
security breach could result in governmental actions or private claims or proceedings, which could damage our reputation, cause a loss 
of confidence in our products and services, damage our ability to develop (and protect our rights to) our proprietary technologies and 
have a material adverse effect on our business, financial condition, results of operations or prospects. While this exposure is common 
to all companies, larger companies with greater resources may be better able to mitigate this risk than we can.   

19 

 
ITEM 1B — UNRESOLVED STAFF COMMENTS 

ImmuCell Corporation 

None 

ITEM 1C – CYBERSECURITY 

Risk Management and Strategy 

We regularly assess risks from cybersecurity threats, monitor our information systems for potential vulnerabilities and test those 
systems pursuant to our process. Our cybersecurity risk assessment is part of our overall risk management program. We also regularly 
engage outside consultants to assess, identify and manage material risks from cybersecurity threats, including those threats associated 
with our use of third-party service providers. These consultants recommend and help implement systems to protect against 
cybersecurity threats. Based on the information available as of the filing date of this Annual Report, we are not aware of any risks 
from cybersecurity threats that have materially affected or are reasonably likely to materially affect our business strategy, results of 
operations or financial condition. However, despite our cybersecurity risk management processes, there can be no assurance that we, 
or the third parties with which we interact, will not experience a cybersecurity incident in the future that may materially affect us. 
Refer to the risk factor captioned “Increasing dependence on the continuous and reliable operation of our information technology 
systems” under PART I, ITEM 1A – RISK FACTORS for additional description of cybersecurity risks and potential related impacts 
on the Company. 

Governance 

Our Board of Directors has overall oversight responsibility with respect to our approach to risk management, including risks 
relating to cybersecurity. Although the Board of Directors has the ultimate responsibility for risk oversight, our management team, 
including our President and CEO, has operational responsibility for cybersecurity matters, including the day-to-day management of 
our cybersecurity risks, and oversees processes for the prevention, detection, mitigation and remediation of any cybersecurity 
incidents. While our management team does not have cybersecurity expertise, we coordinate with expert consultants to assess and 
manage risks. Our Board of Directors reviews cybersecurity threats and risk controls at quarterly meetings based on information 
provided by management and outside consultants. 

ITEM 2 — PROPERTIES 

Building 56: 

During 1993, we purchased a 15,000 square foot facility (that included 5,000 square feet of unfinished office space on the 

second floor) at 56 Evergreen Drive in Portland, Maine. We currently use this space for substantially all of our: i) office and 
laboratory needs, ii) vaccine manufacturing operations, iii) liquid processing operations and iv) freeze-drying operations for our 
USDA-regulated product line. All of our powder milling and filling operations, gel formulation operations and assembly services have 
been relocated out of this building. During 2001, we completed a construction project that added approximately 5,200 square feet of 
new manufacturing space on the first floor and approximately 4,100 square feet of storage space on the second floor. During 2007, we 
built out the 5,000 square feet of unfinished space on the second floor into usable office space. After moving offices from the first 
floor into this new space on the second floor, we modified and expanded the laboratory space on the first floor and added 
approximately 2,500 additional square feet of storage space on the second floor. During 2009, we added 350 square feet of cold 
storage space connected to our first floor production area and added an additional 600 square feet to the second floor storage area. 
During 2015, we completed construction of a two-story addition connected to our facility to provide us with approximately 7,100 
additional square feet for cold storage, production and warehouse space for our operations. These additions increased the size of the 
facility to approximately 34,850 square feet. 

Building 33: 

During 2015, we exercised an option to acquire land at 33 Caddie Lane in Portland, Maine which is near our facility at 56 
Evergreen Drive, on which we initiated construction of our DS production facility for Re-Tain® during the third quarter of 2016. 
During the fourth quarter of 2017, we obtained a Certificate of Occupancy from the City of Portland for our 16,202 square foot (9,803 
on the first floor and 6,399 on the second floor) DS production facility. Our FDA-regulated operations are conducted in this building. 

Building 14: 

During 2017, we purchased a 4,080 square foot facility adjacent to the DS production facility for Re-Tain® at 14 Wedge Way in 
Portland, Maine. We are using this warehouse space primarily for storage of inventory, materials and equipment. During the middle of 
2023, we completed modifications to this facility for packing, shipping and cold storage for Re-Tain® and other warehousing needs.   

Building 175A: 

During 2019, we entered into a lease covering approximately 14,300 square feet of office and warehouse space at 175 Industrial 

20 

 
ImmuCell Corporation 

Way in Portland, Maine to expand our USDA-regulated manufacturing operations. We have renovated this space (a Certificate of 
Occupancy was issued during the second quarter of 2020) to help us expand our production capacity and improve quality for the First 
Defense® product line. This space is being used for all of our powder milling and filling, gel formulation and assembly services. The 
original lease term was ten years with a right to renew for a second ten-year term and a right of first offer to purchase. During the third 
quarter of 2022, we entered into a new 20-year lease covering a facility that has been constructed for us by our landlord (Building 
175B, described below), which is adjacent to (and has been connected to) Building 175A. In connection with this new lease, the lease 
to Building 175A was extended by approximately 13 years to match the expiration of the other lease to Building 175B. 

Building 175B: 

During 2022, we committed to lease an additional 15,400 square feet of space at 175 Industrial Way in Portland, Maine, which 
has been constructed and connected to Building 175A, over a 20-year term. The lease commencement date was April 1, 2023. Lease 
payments began four months after this date. In connection with the lease commitment for space in Building 175B, the term of the 
original lease for Building 175A was extended by approximately 13 years. We intend to use this space for the following three 
purposes: 1) improve product quality by moving powder milling out of Building 56, 2) provide much needed additional warehouse 
space and 3) provide space for additional freeze-drying equipment to increase our production capacity to approximately $40 million 
per year. Due to the loss in gross margin on product sales during 2023 caused by the slowdown in production output necessary to 
remediate product contamination events, we reduced the scope of the investment to build out Building 175B at least for the time 
being. The objective of moving our powder milling operations out of Building 56 has been achieved by moving powder milling to 
Building 175A for the time being. We have completed Phase I of this build out plan, which included pouring a concrete floor and 
bringing utilities and heat to the space. Upon issuance of a Certificate of Occupancy by the city, we plan to relocate all shipping and 
receiving operations from Building 56 to Building 175B and benefit from the new warehouse space. When we have adequate cash, 
we will initiate Phase II of the build out plan, which includes construction of process rooms and installation of production equipment 
necessary to further increase our production capacity. 

Other: 

During March of 2021, we entered into a renewable, two-year lease for approximately 1,300 square feet of office, storage and 

parking space in New York. Subsequently, we entered into a new two-year lease to the same property through March of 2025 that 
includes an option to renew for an additional two-year term. We are renting approximately 960 square feet in Winona, Minnesota for a 
sales office. This lease automatically renews with 4% increases for one-year terms unless we or the landlord give 60-days’ notice of a 
change. The current term expires in June 2024. We do not expect to provide notice of cancellation at this time. We also maintain 
access to cows (as a source of colostrum used in the production of the First Defense® product line) through contractual relationships 
with commercial dairy farms. We maintain property insurance in amounts that approximate replacement cost and a modest amount of 
business interruption insurance. 

ITEM 3 — LEGAL PROCEEDINGS 

In the ordinary course of business, we may become subject to periodic lawsuits, investigations and claims. Although we cannot 

predict with certainty the ultimate resolution of any such lawsuits, investigations and claims against us, we do not believe that any 
pending or threatened legal proceedings to which we are or could become a party will have a material adverse effect on our business, 
results of operations, or financial condition. 

ITEM 4 — MINE SAFETY DISCLOSURES 

None 

PART II 

ITEM 5 — MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER 

PURCHASES OF EQUITY SECURITIES 

Our common stock trades on The Nasdaq Capital Market tier of The Nasdaq Stock Market under the symbol ICCC. As of March 
8, 2024, we had 15,000,000 common shares authorized and 7,750,864 common shares outstanding, and there were approximately 642 
shareholders of record. We have not paid dividends on our common stock and do not have any present plan or expectation to pay 
dividends.   

Purchase of Equity Securities   

            During 2023, we accepted $18,760 in cash in consideration for the exercise of 4,000 stock options. During 2022, we accepted 

21 

 
 
$30,670 in cash in consideration for the exercise of 5,000 stock options. In all cases, new shares were issued from treasury stock.   

ImmuCell Corporation 

ITEM 6 — [RESERVED] 

ITEM 7 — MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF 

OPERATIONS 

The following discussion and analysis of our financial condition and results of operations should be read together with our 
audited financial statements and the related notes and other financial information included in Part II: ITEM 8 — FINANCIAL 
STATEMENTS AND SUPPLEMENTARY DATA of this Annual Report. Some of the information contained in this discussion and 
analysis or set forth elsewhere in this Annual Report, including information with respect to our plans and strategy for our business, 
includes forward-looking statements that involve risks and uncertainties. One should review Part I: ITEM 1A — RISK FACTORS 
of this Annual Report for a discussion of some of the important factors that could cause actual results to differ materially from the 
results, objectives or expectations described in or implied by the forward-looking statements contained in the following discussion and 
analysis. 

OUTLINE TO ITEM 7 – MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND 
RESULTES OF OPERATIONS 

-  Liquidity and Capital Resources 

-  Results of Operations 

-  Critical Accounting Policies 

Liquidity and Capital Resources 

Net cash used for operating activities was $4.7 million during the year ended December 31, 2023 in comparison to net cash used 
for operating activities of $1.5 million during the year ended December 31, 2022. The $3.1 million increase in cash used for operating 
activities during the year ended December 31, 2023 compared to the year ended December 31, 2022 was largely caused by the $3.3 
million increase in the net loss which was, in turn, largely the result of $3.8 million less gross margin being earned during 2023, due to 
the production contamination events discussed below. Approximately $1.4 million less cash was received from the collection of 
accounts receivable, which was largely offset by $1.2 million less cash being invested in inventory during the year ended December 
31, 2023 compared to the prior year. Our inventory balance increased by $1.8 million to $7.8 million as of December 31, 2023 from 
$6 million as of December 31, 2022. Our total depreciation and amortization expense was approximately $2.7 million and $2.5 million 
during the years December 31, 2023 and 2022, respectively. We anticipate that depreciation expense, while not affecting our cash 
flows from operations, will be a significant factor in creating annual net operating losses until and unless product sales increase 
sufficiently to offset these non-cash expenses. Net cash used for investing activities was $1.9 million during the year ended December 
31, 2023 in comparison to net cash used for investing activities of $4 million during the year ended December 31, 2022 consisting 
primarily of cash spent to fund the purchase of property, plant and equipment.   

Net cash provided by financing activities increased to $1.8 million during the year ended December 31, 2023 in comparison to 
net cash provided by financing activities of $1.1 million during the year ended December 31, 2022. We received gross debt proceeds 
of $3 million and $2 million during the years ended December 31, 2023 and 2022, respectively. We had aggregate debt outstanding 
(net of debt issuance and debt discount costs) of approximately $12 million and $10.2 million as of December 31, 2023 and 2022, 
respectively. This debt bears interest at fixed rates. The blended interest rate on the debt outstanding as of December 31, 2023 and 
2022 is 4.51% and 3.65% per annum, respectively. Debt principal repayments aggregated $1.2 million and $897,000 during the years 
ended December 31, 2023 and 2022, respectively. We anticipate that debt principal repayments will aggregate approximately $1.5 
million during both of the years ending December 31, 2024 and 2025. Interest expense (including amortization of debt issuance and 
debt discount costs) was $476,000 and $349,000 during the years ended December 31, 2023 and 2022, respectively. We anticipate that 
interest expense (including amortization of debt issuance and debt discount costs) will be $563,000 and $492,000 during the years 
ending December 31, 2024 and 2025, respectively. During the first quarter of 2024, the availability of our $1.0 million line of credit, 
which bears interest at the National Prime Rate per annum, was extended until September 11, 2025. There was no outstanding balance 
under this line of credit as of December 31, 2023 or 2022. See Note 10 to the accompanying audited financial statements for more 
information about our bank debt. 

From the first quarter of 2016 through the second quarter of 2021, we raised gross proceeds of $26.7 million (net proceeds were 
$24.8 million) from six different common equity transactions priced between $5.25 and $8.25 per share with a weighted average price 
of $5.87 per share. No warrants were issued in connection with any of these transactions, and no convertible or preferred securities 
were issued. This capital, together with our bank debt and gross margin from product sales, has allowed us to transform the Company. 
Based on our best estimates and projections, we believe that our cash and cash equivalents, together with gross margin anticipated to 

22 

 
be earned from ongoing product sales will be sufficient to meet our currently planned working capital and capital expenditure 
requirements and to finance our ongoing business operations for at least 12 months (which is the period of time required to be 
addressed for such purposes by accounting disclosure standards) from the date of this filing. The table below summarizes the changes 
in selected, key accounts (in thousands, except for percentages): 

ImmuCell Corporation 

Cash and cash equivalents   
Net working capital 
Total assets 
Stockholders’ equity 
Common shares outstanding(1) 

As of 
December 31, 2023 

As of   
December 31, 2022 

(Decrease) Increase 

Amount 

% 

$979   
$7,272   
$43,808   
$24,993   
7,751   

$5,792   
$10,923   
$44,861   
$30,380   
7,747   

($4,813)   
($3,650)   
($1,053)   
($5,387)   
4   

(83%) 
(33%) 
(2%) 
(18%) 
<1% 

(1) There were 618,500 and 605,000 shares of common stock reserved for issuance for stock options that were outstanding as of December 31, 2023, 
and 2022, respectively. 

We have invested and continue to invest in several different capital expenditure projects to increase our estimated annual full 

production capacity for the First Defense® product line from approximately $16.5 million to approximately $40 million and to 
complete the development of Re-Tain®. When we describe the production capacity for the First Defense® product line in this Annual 
Report, it should be noted that the actual value of this capacity varies based on biological and process yields, product format mix, 
selling price and other factors.   

During the three-year period ended December 31, 2016, we invested the aggregate of $4.2 million to construct a 7,100 square 
foot facility addition at 56 Evergreen Drive and related equipment (primarily Freeze-Dryer #2) and cold storage capacity increasing 
our freeze-drying capacity by 100% and making other improvements to our liquid processing capacity, which increased our annual 
production capacity (in terms of annual sales dollars) to approximately $16.5 million. During the first quarter of 2016, we completed 
this investment, which also included the construction and equipping of a pilot plant for small-scale DS production for Re-Tain® 
within our First Defense® production facility at 56 Evergreen Drive. After construction of the DS production facility for Re-Tain® at 
33 Caddie Lane (described in the next paragraph) was completed, this space was converted for use in the production of the gel tube 
formats of the First Defense® product line. After construction of Building 175A (described below) was completed, this space was 
converted to double our liquid processing capacity. 

During the four-year period ended December 31, 2018, we invested the aggregate of $21.6 million to construct a DS production 
facility for Re-Tain® at 33 Caddie Lane. During the fourth quarter of 2017, we completed construction of the DS production facility. 
We began equipment installation during the third quarter of 2017, and we completed this installation during the third quarter of 2018. 
The total cost of this investment for the DS production facility and related processing equipment was $20.8 million plus $331,000 for 
the land and $472,000 for the acquisition of an adjacent 4,080 square foot warehouse facility at 14 Wedge Way, which will be used for 
packing, shipping and cold storage of Re-Tain® and other warehousing needs. 

During 2019, we initiated several additional capital expenditure investments in First Defense® and Re-Tain® as detailed in the 

following table (in thousands): 

Paid During 

  First Defense® 

Re-Tain® 

Other 

Total 

Year Ended December 31, 2019 
Year Ended December 31, 2020 
Year Ended December 31, 2021 
Year Ended December 31, 2022 
Year Ended December 31, 2023 

Total Paid through December 31, 2023 

Estimate to Complete(1) 
Total Project Cost 

$279 
2,938 
1,633 
3,513 
1,097 
9,460 
3,500 
$12,960 

$538 
581 
976 
415 
796 
3,306 
2,000 
$5,306 

$574 
554 
- 
47 
- 
1,175 
900 
$2,075 

$1,391 
4,073 
2,609 
3,975 
1,893 
13,941 
6,400 
$20,341 

(1) The investment of approximately $5.5 million of these funds for First Defense® and Re-Tain® projects has been deferred for the 
time being. These figures are rough estimates for the work to be completed that have not been put out to bid for firm cost quotations or 
contracts at this time. 

The primary purpose of the additional investment in First Defense® is to fulfill the current backlog and materially reduce the 

risk of another order backlog. Operating at very close to 100% of available capacity is not efficient or sustainable. Our objective is to 
be in position to operate without significant contaminations at the capacity level we choose to cover sales with adequate buffer stock, 

23 

 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
ImmuCell Corporation 
which would allow more time for necessary preventative maintenance, and to have redundancy in place for when equipment failures 
occur. In addition to running without significant product contaminations or equipment failures, we need to meet or exceed our 
production yield assumptions to succeed. 

The first phase of the additional investments in First Defense® included significant renovations to a 14,300 square foot leased 

facility at 175 Industrial Way (Building 175A), some facility modifications at 56 Evergreen Drive and the necessary production 
equipment (including Freeze-Dryer #3) to increase our freeze-drying capacity by 50% and our liquid processing capacity by 100%. 
This resulted in increasing the annual production capacity of the First Defense® product line (in terms of annual sales dollars) from 
approximately $16.5 million to approximately $23 million. Renovations of Building 175A to enable this expansion were completed 
during the second quarter of 2020. By moving our powder and gel filling and assembly services from 56 Evergreen Drive into this 
new space, we created space at 56 Evergreen Drive for the installation of the expanded freeze-drying capacity. The new facilities are 
built to contemporary current Good Manufacturing Practices (cGMP) standards with efficient material and people flows. A site license 
approval for this new facility was issued by the USDA during the third quarter of 2020. During the second quarter of 2021, we 
completed the relocation of our gel formulation equipment from 56 Evergreen Drive to Building 175A, which created the space 
necessary to double our liquid processing capacity at 56 Evergreen Drive. We obtained site license approval of the expanded freeze-
drying capacity (Freeze-Dryer #3) at 56 Evergreen Drive from the USDA during the third quarter of 2021, and we obtained site 
license approval of the expanded liquid processing capacity at 56 Evergreen Drive from the USDA during the third quarter of 2022. 
This investment also included equipment and vehicle investments necessary to expand and improve our colostrum collection 
capabilities and logistics.   

  The second phase of the additional investments in First Defense® included the installation of Freeze-Dryer #4 to further 
increase the estimated annual production capacity of the First Defense® product line (in terms of annual sales dollars) by an additional 
33% from approximately $23 million to approximately $30 million. Due to supply disruptions affecting key components and 
equipment, this investment was not completed until the end of 2022. This investment also includes equipment and facility 
modifications to scale-up and upgrade our vaccine manufacturing capacity, improve our quality laboratories and install new 
equipment for our gel filling operations for First Defense® at 56 Evergreen Drive and Building 175A. This phase included the 
automation of our gel filling operations.   

The third phase of the additional investments in First Defense® involves the initiation of a new investment in building 
modifications and equipment to further increase our estimated annual First Defense® production capacity from approximately $30 
million to approximately $40 million with options for further expansion. Given the long lead time required for investments like this, 
we initiated this project by entering into a lease amendment during the third quarter of 2022 covering a to-be-constructed 15,400 
square foot building shell connected to Building 175A for approximately $250,000 per year. Construction of the building shell by our 
landlord was substantially complete as of April 1, 2023, and rent payments commenced as of August 1, 2023. We made this lease 
commitment because of the unique proximity of the land adjacent to our currently leased space and the high level of demand for 
properties of this type in the Portland market. We did not want to risk losing this opportunity to others. The anticipated benefits to us 
from this new lease include: i) space for the potential to install Freeze-Dryers #5, #6, #7 and #8 if justified by market demand in the 
future, ii) improved space and quality for our powder milling operations by separating our upstream processes (liquid processing) at 
56 Evergreen Drive from our clean downstream processes (milling, formulation, filling and packaging) and iii) much needed 
additional warehouse space. Freeze-Dryer #5 is the key piece of equipment required to allow us to increase our estimated annual 
production capacity to above $30 million. Based on past experience, we are planning for approximately 18 to 24 months of lead time 
for fabrication, installation, qualification and implementation of Freeze-Dryer #5. We have been running our equipment and staff close 
to 100% of capacity in order to fill the backlog of orders. One of our objectives is to create a more sustainable production schedule. 
However, due to the loss in gross margin during 2023 caused by the slowdown in production output necessary to remediate the 
product contamination events discussed below, we have decided to defer most of this investment, for the time being. During the third 
quarter of 2023, we initiated the initial steps of this project with a budget of approximately $700,000. We completed this work during 
the first quarter of 2024, which will provide additional warehousing space and allow us to move all shipping and receiving functions 
out of 56 Evergreen Drive to create more space for liquid processing. In consideration for our landlord agreeing to pay for the cost of 
those certain tenant improvements, we are obligated to make additional rent payments of $20,000 per month from November 2023 
through June 2024 and a one-time additional rent payment of $488,743 in July 2024.   

The purpose of the additional investments in Re-Tain® is to bring the formulation and aseptic filling capabilities for Re-Tain® 

DP into available space in our DS facility to end our reliance on third-party DP manufacturing services as well as to build out 
warehouse space at 14 Wedge Way for packing and shipping facilities for Re-Tain®. We began initial installation of the filling 
equipment during the first quarter of 2022. Then we paused this installation work pending concurrence with the FDA pertaining to our 
third submission of the Chemistry, Manufacturing and Controls (CMC) Technical Section, which is discussed in greater detail below. 
Due to the loss in gross margin during 2023 caused by the slowdown in production output necessary to remediate the product 
contamination events discussed below, we have decided to defer the spending of approximately $2 million of these funds, for the time 

24 

 
ImmuCell Corporation 
being. At the same time, we are investigating other potential relationships with contract manufacturers that might do this work for us 
so that we can avoid this use of funds. If we decide to resume the in-house strategy, we would anticipate FDA approval of this facility 
(which is a requirement for commercial manufacturing) at least two years after we resume spending on this project. 

During the third quarter of 2016, the City of Portland approved a Tax Increment Financing (TIF) credit enhancement package that 

reduces the real estate taxes on our DS production facility for Re-Tain® by 65% over the eleven-year period beginning on July 1, 2017 
and ending June 30, 2028 and by 30% during the year ending June 30, 2029, at which time the rebate expires. During the second quarter 
of 2017, the TIF was approved by the Maine Department of Economic and Community Development. The value of the tax savings will 
increase (decrease) in proportion to any increases (decreases) in the assessment of the building for city real estate tax purposes or the 
City’s tax rate. The following table discloses how much of the new taxes we have generated is being relieved by the TIF and how much we 
are paying: 

Twelve-Month   
Period Ended 

  Total New Taxes 
Generated by   
the Project 

Less:   
TIF Credit 

  Net Amount 
Paid by   
ImmuCell 

June 30, 2018   
June 30, 2019   
June 30, 2020   
June 30, 2021   
June 30, 2022   
June 30, 2023   
June 30, 2024   

$36,000   
$90,000   
$94,000   
$94,000   
$55,000   
$58,000   
$61,000   
$488,000   

$22,000   
$58,000   
$60,000   
$60,000   
$36,000   
$37,000   
$39,000   
$312,000   

$13,000   
$32,000   
$34,000   
$34,000   
$20,000   
$21,000   
$22,000   
$176,000   

Assessed Value 
$1.7 million @ April 1, 2017 
$4.0 million @ April 1, 2018 
$4.0 million @ April 1, 2019 
$4.0 million @ April 1, 2020 
$4.3 million @ April 1, 2021 
$4.3 million @ April 1, 2022 
$4.3 million @ April 1, 2023 

Total 

Results of Operations   

Business Segments 

As detailed in Note 17, “Segment Information”, to the accompanying audited financial statements, we operate in two business 

segments. The Scours segment is dedicated to manufacturing and selling First Defense®, a product used to prevent scours in newborn 
calves, which is regulated by the United States Department of Agriculture (USDA). The Mastitis segment is focused on developing and 
commercializing Re-Tain®, a product to treat subclinical mastitis in lactating dairy cows, which is regulated by the United States Food 
and Drug Administration (FDA). 

Production Capacity Increase, Product Contamination and Related Events 

During 2018, it became clear that demand for Tri-Shield First Defense® was outpacing production. In response to this               
increasing demand, we began a series of investments during 2019 to increase our production capacity for the First Defense® product 
line to an estimate of approximately $30 million per year. Over recent years, we have invested more than $12.4 million to increase our 
production capacity to meet the still-growing demand. This investment in equipment and facilities represents approximately 50% of 
our stockholders’ equity as of December 31, 2023. Although we have not yet been able to achieve our production output goals, we 
remain deeply committed to continuing to supply First Defense® to the market over the long term, despite the current short supply. 
Our production process is a very complicated one, which makes it difficult to scale-up quickly. We can’t just flip a switch and pump 
out more widgets. 

The past year or so has been considerably challenging for us. As of July 2022, we had completed almost all of the facility 
expansion work and new equipment installations needed to significantly increase our production capacity. However, the most critical 
piece of new equipment (being Freeze-Dryer #4) was delivered six months late by the fabricator. As this increased production capacity 
was coming online, a product contamination event was detected by standard in-process quality control testing around the end of the 
third quarter of 2022. Scrapped product from contamination events and other production process losses during 2022 (largely due to the 
contamination event around the end of the third quarter) resulted in a total charge to costs of goods sold of $589,000 during 2022. We 
took immediate steps to address the contamination, and production ran without issue during the balance of the fourth quarter of 2022. 
By the end of 2022, we had Freeze-Dryer #4 approved for use by the USDA. Just as we began to operate at this higher level of 
capacity at the beginning of 2023, we were forced to slow down production to remediate a second contamination event related to our 
incoming raw material. In response to this contamination event, we slowed down our production output as we took the necessary steps 
to assess and remediate the issues to ensure that any product that is released to market continues to meet all quality standards. At the 
same time, Freeze-Dryer #2 stopped operating requiring a six-month repair, netting us back to three operating freeze dryers. As of 
early July 2023, we were back to four operating freeze dryers, and we believed that the contamination events were largely behind us. 
We subsequently experienced a third contamination event in September 2023 impacting two lots of work-in-progress inventory. 
Although all of the incoming material utilized in this production phase had passed quality control testing, the product failed the quality 
control tests later in the production process. The production pause necessary to remediate the problem reduced our production output 

25 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
ImmuCell Corporation 
during September and October of 2023. Scrapped product from contamination events and other production process losses during 2023 
resulted in a total charge to costs of goods sold of $527,000 during 2023. 

The production slowdown during the first ten months of 2023, has, in part, caused an increase in the amount of our order 

backlog from approximately $2.5 million as of December 31, 2022 to approximately $9.4 million as of December 31, 2023. This 
backlog increased further to $10.3 million as of March 8, 2024. We cannot be certain that this backlog will be converted to sales 
because it includes orders that were placed months ago, redundancy in demand and orders that may be cancelled. We believe that the 
ongoing implementation of our capacity expansion plans and the corrective actions being taken in response to these contamination 
events should allow us to operate without further significant contaminations going forward with estimated annual production capacity 
of approximately $30 million during the latter part of the fourth quarter of 2023 and into 2024. While we produced far less than we 
needed during 2023, we believe that our remediation efforts are allowing us to steadily ramp back up to full production capacity. With 
the positive trend in our quality control test results described above, we are building back production. As we resume full production, 
our goal is to be able to produce at least $6 million or more worth of product per quarter, which would annualize to about 80% or 
more of our estimated $30 million annual production capacity. Finished goods produced increased steadily from approximately $3.3 
million to $4 million and further to $5.3 million during the first, second and third quarters of 2023, respectively, before dropping 
modestly to $5.1 million during the fourth quarter of 2023. The output levels achieved during the months of November and December 
of 2023 annualize to approximately $26.8 million, which equates to an average quarterly production of approximately $6.7 million. 

Since February of 2023, we have been pursuing an insurance claim under our business interruption policy to offset a small 
portion of the losses that we have incurred related to at least three different product contamination events. While our financial losses 
are far larger, we are seeking a $750,000 insurance benefit. To date, we have received $250,000. The balance of this claim is under 
review by our underwriter. We cannot estimate the likelihood of our success with this claim. 

The increase in sales demand for First Defense® is both exciting and challenging for us. The learnings from the remediation of 

the contamination events have improved our production processes going forward. We have implemented several important 
improvements at the source farm level including more product and environmental testing, more training of farm staff and better 
enforcement of our protocols. While we never release product to the market that does not pass our final quality control release tests, 
we had allowed product to advance in the production process at risk, while the in-process quality control tests were being performed. 
We no longer advance product to the next stage before the complete quality control test results are known. While this does add time to 
the production cycle, we believe that it has helped us reduce further contaminations. Notwithstanding the challenges that 
contamination events have posed for us, we are excited to be approaching both our estimated full capacity of approximately $30 
million per year for First Defense® (with a flex option to increase our estimated full capacity to approximately $40 million per year in 
the future) while, at the same time, advancing to the final stages of a very significant FDA product development initiative with Re-
Tain®. 

Product Sales 

Our near-term goal is to increase and stabilize supply, regain lost business and re-establish our growth curve. However, the 2023 

production shortage caused largely by certain contamination events may prove to be more detrimental to our growth curve than any 
prior production shortage because it impacted more customers for a longer period of time. Through continued growth in sales of the 
First Defense® product line, and the dedication of additional resources to production, sales, marketing and technical services, it is our 
objective to exceed our total product sales of approximately $17.5 million and $18.6 million achieved during the years ended 
December 31, 2023 and 2022, respectively, as soon as possible. Our longer-term goal is to exceed $35 million of annual total product 
sales as soon as possible during the four-year period after the market launch of Re-Tain®. We do not solely benchmark our sales 
expectations off trailing twelve-month sales results. Instead, we look at the sales of competitive products to assess the size of the 
addressable market and plan for growth when projecting our future production capacity needs. 

The production slowdown necessary to remediate the contamination events described above resulted in significantly reduced 

sales during the first ten months of 2023. During this period of short supply when we have been selling product as soon as it is 
produced, our sales are less impacted by the historically high seasonality during the first quarter of each year. Sales during the three-
month period ended March 31, 2023 were $3.45 million, representing a 12%, or $464,000, decrease from sales of $3.9 million during 
the fourth quarter of 2022. Sales during the three-month period ended June 30, 2023 were $3.53 million, representing a 2%, or 
$86,000, increase over sales during the first quarter of 2023. Sales during the three-month period ended September 30, 2023 were $5.4 
million, representing a 53%, or $1.9 million, increase over sales during the second quarter of 2023. Sales during the three-month 
period ended December 31, 2023 were $5.1 million, representing a 6%, or $301,000, decrease from sales during the third quarter of 
2023. Sales during the second half of the year were stronger as we were able to increase production. Sales during the six-month period 
ended December 31, 2023 were $10.5 million, representing a 50%, or $3.5 million, increase over sales of $7 million during the six-
month period ended June 30, 2023. Quarter to quarter sales over the past two years are displayed in the following table: 

26 

 
ImmuCell Corporation 

$6,000,000 

$5,400,000 

$5,100,000 

$4,800,000 

$3,860,000 

$3,910,000 

$3,530,000 

$3,450,000 

l

s
e
a
S
t
c
u
d
o
r
P

$7,000,000

$6,000,000

$5,000,000

$4,000,000

$3,000,000

$2,000,000

$1,000,000

$0

First
Quarter
2022

Second
Quarter
2022

Third
Quarter
2022

Fourth
Quarter
2022

First
Quarter
2023

Second
Quarter
2023

Third
Quarter
2023

Fourth
Quarter
2023

Sales increased by 30%, or $1.2 million, to $5.1 million during the three-month period ended December 31, 2023, in comparison 

to $3.9 million during the three-month period ended December 31, 2022. Domestic sales during the three-month period ended 
December 31, 2023 increased by 29%, and international sales increased by 46%, in comparison to the three-month period ended 
December 31, 2022. International sales aggregated 6% of total sales during both of the three-month periods ended December 31, 2023 
and 2022. The quarterly sales results are summarized in the following table (in thousands, except for percentages):   

During the Three-Month   
Periods Ended December 31, 
2022 

2023 

Increase 

Amount 

% 

Total product sales 

$5,096   

$3,911   

$1,185   

30% 

Our lack of product supply drove a sales decrease of 6%, or $1.1 million, to $17.5 million during the year ended December 31, 
2023, in comparison to $18.6 million during the year ended December 31, 2022. Domestic sales during the year ended December 31, 
2023 decreased by 6%, and international sales decreased by 2%, in comparison to the year ended December 31, 2022. International 
sales aggregated 9% and 8% of total sales during the years ended December 31, 2023 and 2022, respectively. The sales results for the 
annual periods are summarized in the following table (in thousands, except for percentages):   

Total product sales 

During the Years 
Ended December 31, 

(Decrease) 

2023 

2022 

Amount 

% 

$17,472   

$18,568   

($1,096)   

(6%) 

Sales of the First Defense® product line aggregated 99% of our total sales during both of the years ended December 31, 2023 

and 2022. Our sales are generally seasonal with highest demand expected during the first quarter of each year. However, as we fulfill 
our large backlog of orders, we do not expect to see as much of this seasonal demand swing in our product sales. Most of our growth 
(when not limited by backlog) is being realized through increased demand and a deliberate strategy to prioritize production capacity 
towards Tri-Shield First Defense® (the trivalent format of our product delivered via a gel tube), which provides broader protection to 
calves. The compound annual growth rate (CAGR) of our total product sales was 10.8%, 9.7% and 6.2% during the twelve-year, five-
year, and four-year periods ended December 31, 2023, respectively. 

27 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
ImmuCell Corporation 

We likely lost some business during 2022 and 2023 as a result of the backlog. During the first half of 2023, the impact of tight 
supplies hit even harder leaving our customers without product during their busiest calving season. Our inability to timely meet the 
needs of our customers could result in the loss of some customers who seek alternative scours management products during this period 
of short supply and some of these customers may not resume purchasing our product when we have eliminated the backlog. While we 
worked to allocate product directly to certain large customers during this period of short supply, we likely lost some customers that 
could not access product. While backlog is a better problem to have than seeing product expiring on our shelves, it is nonetheless a 
significant challenge when we do not get our customers everything that they want. Our sales team is preparing to resume more normal 
sales growth initiatives as we expect inventory to become available. We will work to regain end-user customers that we may have lost 
while we were short on product and will aggressively compete for new business. As we emerge from an extended period of time on 
backlog, we anticipate higher than normal sales fluctuations quarter to quarter. What is most important to us at this time is that we 
achieve sales growth over the longer periods of time, even if we experience some quarter-to-quarter fluctuations.   

Valuation of the backlog is a non-GAAP estimate that is based on purchase orders on hand at the time that could not be met 

because of a lack of available inventory. Quantification of the backlog during the current periods has become far less comparable to 
prior periods. At times, customers have placed orders for more than a month’s worth of their demand, perhaps in reaction to our 
ongoing backlog situation, whereas in the past they ordered more closely in line with their current demand. We are reporting this 
figure because it reflects the orders on our books presently that we cannot ship. We are concerned that this backlog amount may not be 
highly relevant at this time as it includes very old orders, redundancy in demand and orders that may be cancelled given the time that 
has passed since they were originally placed. However, when we required all distributors to replace their orders around November 15, 
2023 to reflect an 8% price increase, the amount of the backlog, in fact, increased rather than decreased. We believe this reflects 
strong demand for our product.   

The backlog was reduced from approximately $2.4 million as of December 31, 2021 to approximately $205,000 as of September 
30, 2022. In part because of a first contamination event experienced around the end of the third quarter of 2022, our backlog increased 
to approximately $2.5 million as of December 31, 2022. In part because of a second contamination event experienced during the first 
quarter of 2023, the backlog increased further to approximately $7.5 million as of March 31, 2023 and increased to approximately $8 
million as of June 30, 2023 and increased to approximately $8.9 million as of September 30, 2023 and increased to approximately 
$9.4 million as of December 31, 2023 (as demonstrated in the table below). As of March 8, 2024, the backlog of orders was 
approximately $10.3 million. As sales demand increased while our production output was reduced, the value of our order backlog has 
fluctuated as demonstrated in the following table: 

28 

 
ImmuCell Corporation 

$8,943,000 

$9,381,000 

$8,040,000 

$7,467,000 

$10,000,000

$9,000,000

$8,000,000

$7,000,000

$6,000,000

$5,000,000

$4,000,000

$3,000,000

$2,432,000 

$2,009,000 

$2,495,000 

$2,000,000

$1,000,000

$0

$799,000 

$205,000 

g
o
l
k
c
a
B
f
o
e
u
a
V

l

1/1/2022

4/1/2022

7/1/2022

10/1/2022

1/1/2023

4/1/2023

7/1/2023

10/1/2023

1/1/2024

We believe that we are on the right track to increase production output, but we still have more work to do to catch up to product 

demand. We anticipate that we are in good position to move past the contamination events that materially affected our output during 
late 2022 and through the first ten months of 2023 and are positioned to execute on our plan to resume sales growth in 2024. Finished 
goods produced increased steadily from approximately $3.3 million to $4 million and further to $5.3 million during the first, second 
and third quarters of 2023, respectively, but then dropped off slightly to $5.1 million during the fourth quarter of 2023. Our objective 
is to produce finished goods with an approximate sales value of $6 million or more per quarter, as we implement and optimize recent 
investments to increase its production capacity. Fourth quarter 2023 production was limited by lower output during the month of 
October, which was caused by a contamination event in September 2023. After remediating this event, we achieved full production 
during the balance of the quarter. The output levels achieved during the months of November and December 2023 annualize to 
approximately $26.8 million, which equates to an average quarterly production of approximately $6.7 million. 

We implemented an average price increase of approximately 8% on the First Defense® product line effective November 15, 
2023. The backlog of orders was worth approximately $9 million just before this price change. We had some concern that the value of 
the backlog might decrease materially if customers chose not to replace all orders at the new price given that many of those orders 
were dated. However, we did not see a decrease in the backlog after the price increase which validated the strength of the order 
demand.       

We acquired a private label product in connection with our January 2016 acquisition of certain gel formulation technology. This 
product was discontinued during the first quarter of 2022 because it was not a significant contributor to our total sales and it competed 
for valuable time and space in our production schedule. We sell our own CMT, which is used to detect somatic cell counts in milk. 
Sales of these products (other than the First Defense® product line) increased by 53%, or $19,000, to $56,000 during the three-month 
period ended December 31, 2023, in comparison to the three-month period ended December 31, 2022. Sales of these other products 
aggregated 1% of our total product sales during both of the three-month periods ended December 31, 2023 and 2022. Sales of these 
products increased by 14%, or $22,000, to $178,000 during the year ended December 31, 2023, in comparison to the year ended 
December 31, 2022. Sales of these other products aggregated 1% of our total product sales during both of the years ended December 
31, 2023 and 2022.   

Effective January 1, 2022, we increased our selling price of the First Defense® product line by approximately 5% and CMT by 
approximately 7%. Effective January 1, 2023, we increased our selling price of the First Defense® product line by approximately 4% 
(range of 2% to 8%) and CMT by approximately 5%. Effective November 15, 2023, we increased our selling price for the First 

29 

 
 
 
 
 
Defense® product line by an average of 8% and for CMT by approximately 12%.   

ImmuCell Corporation 

Gross Margin 

The change in our gross margin (product sales less costs of goods sold) and our gross margin as a percentage of product sales 
during the three-month periods and years ended December 31, 2023 and 2022 are summarized in the following tables (in thousands, 
except for percentages): 

Gross margin 
Percent of product sales 

Gross margin 
Percent of product sales 

During the Three-Month   
Periods Ended December 31, 
2022 

2023 

Increase 
(Decrease) 

Amount 

% 

$1,258   
25%   

$992   
25%   

$266   
(1%)   

27% 
(3%) 

During the Years 
  Ended December 31, 

(Decrease) 

2023 

2022 

Amount 

% 

$3,869   
22%   

$7,649   
41%   

($3,779)   
(19%)   

(49%) 
(46%) 

The very significantly reduced gross margin (on both a dollar and percentage of sales basis) during the year ended December 31, 
2023 was largely the result of the significant decrease in sales during the first ten months of 2023, which was caused by a reduction in 
production output, not by a reduction in demand. The reduction in production output was, in turn, the result of our decision to slow 
down our production rate while remediating the production contamination events, while not yet operating at our anticipated increased 
production output level. During 2023, we did not benefit from spreading our fixed costs over higher volumes as we normally do. 
Further, we did not furlough any labor during this production slowdown. The gross margin as a percentage of product sales was 41%, 
45%, 45%, 49%, 47% and 50% during the years ended December 31, 2022, 2021, 2020, 2019, 2018 and 2017, respectively. The gross 
margin during the year ended December 31, 2023 was significantly less than what we have experienced historically and significantly 
less than what we anticipate going forward. The product contamination events and other production process losses experienced during 
2023 and 2022 resulted in scrapped inventory valued at approximately $527,000 and $589,000, respectively. Absent these write-offs, 
our gross margin as a percentage of product sales would have been approximately 25% and 44% during the years ended December 31, 
2023 and 2022, respectively. Although these types of losses are expected to happen from time to time in the production of a biological 
product such as ours, we believe we have mitigated the risk of reoccurrence of such losses through the implementation of certain new 
quality control steps and manufacturing processes and facility improvements.   

The significant global supply-chain disruptions that almost all industries are experiencing presently are a challenge to us. The 

costs of our supplies, components, raw materials, and services increased significantly during 2021 and that trend continued during 
2022 and 2023. Prices for raw materials and critical supplies are increasing significantly, and it is becoming increasingly more 
difficult to obtain timely delivery of the orders that we place. Therefore, we have little choice but to pay the higher prices and try to 
take on more months of supply than we would have held previously if we could get our orders fulfilled timely.   

While our biological and process yields can be variable, we have seen a favorable improvement to our finished goods yield 

recently, but these yields continue to be variable. The Tri-Shield® product format is more complex (i.e., three antibodies versus two 
antibodies for Dual-Force®) making it more costly to produce, and both the bivalent and trivalent gel product formats are more 
expensive to produce than the bolus format. These new formats are creating sales growth for us, and we are focused on increasing total 
gross margin dollars, even if that is accomplished with a lower gross margin as a percentage of sales. A number of other factors 
contribute to the variability in our costs, resulting in some fluctuations in gross margin percentages from quarter to quarter and from 
year to year. We also invest to sustain compliance with current Good Manufacturing Practices (cGMP) in our production processes. 
Increasing production can be more expensive in the initial stages. To achieve our inventory production growth objectives, we continue 
to acquire more raw material (colostrum) from many more cows at several new farms. During this expansion phase, colostrum quality 
can be more variable. Additionally, the biological yields from our raw material are always variable, which impacts our costs of goods 
sold in a similar way. Just as our customers’ cows respond differently to commercial dam-level vaccines, depending on the time of 
year and immune competency, our source cows have similar biological variances in response to our proprietary vaccines. As is the 
case with any vaccine program, animals respond less effectively to their first exposure to a new vaccine, and thereafter the 
effectiveness of their immune response improves in response to subsequent immunizations. While this variability impacts our costs of 
producing inventory, the commercial value of our First Defense® product line is that we compensate for the variability in a cow’s 
immune response by standardizing each dose of finished product. This ensures that every calf is equally protected, which is something 
that dam-level commercial scours vaccines cannot offer. We continue to work on processing and yield improvements and other 
opportunities to reduce costs, while enhancing process knowledge and robustness. Over time, we have been able to reduce the impact 

30 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
of cost increases by implementing yield improvements. We believe that gross margin results going forward should be viewed over 
longer periods of time than just one quarter. As we fully integrate and utilize our increased capacity and evaluate our product costs and 
selling price, one of our goals is to achieve a gross margin (before related depreciation and amortization expenses) as a percentage of 
total sales approaching 48%.   

ImmuCell Corporation 

Product Development Expenses and Strategy 

Overview: The majority of our product development expenses pertain to the development of Re-Tain®. During the year ended 

December 31, 2023, product development expenses decreased by 2%, or $99,000, to $4.4 million in comparison to $4.5 million during 
the year ended December 31, 2022. Product development expenses aggregated 25% and 24% of product sales during the years ended 
December 31, 2023 and 2022, respectively. Product development expenses included non-cash depreciation and stock-based 
compensation expenses of $1.5 million and $1.4 million during the years ended December 31, 2023 and 2022, respectively. 
Approximately $1.3 million of these non-cash expenses were comprised of depreciation expenses pertaining to our DS facility for Re-
Tain® during both of the years ended December 31, 2023 and 2022. We began depreciating this asset when the Certificate of 
Occupancy for the new construction was issued during the fourth quarter of 2017, but sales of our new product cannot be realized until 
we achieve FDA approval. We expect our product development expenses to decrease modestly during 2024 as we produce less 
product for commercial launch and somewhat further after Re-Tain® is commercialized and some of the costs incurred to maintain 
and run our DS production facility become part of our costs of goods sold. 

Development objective: As we work to change the way that mastitis is managed in the dairy industry, we aim to demonstrate that 

our bacteriocin, Nisin A, which is designed specifically for subclinical mastitis, can provide producers the freedom to change when 
and how mastitis is treated. Re-Tain® is not a broad-spectrum antibiotic used in human health. Rather, it consists of a highly targeted 
active ingredient without an FDA-required milk discard or meat withhold. While milk prices vary, the cost of the milk discard 
associated with traditional antibiotics ranges from approximately $36.00 (for 3.5 days of milk at 60 pounds per day at the Class III 
milk price average of $17.02 per hundredweight during 2023) to approximately $150.00 (for 11 days of milk at 80 pounds per day at 
the Class III milk price average of $17.02 per hundredweight during 2023) per treated animal. These high milk discard costs 
associated with traditional antibiotic treatments lead producers to only treat mastitis after clinical signs develop. We expect that Re-
Tain® will be a first-of-its-kind product that can be used to economically treat at the earliest stage of infection, giving producers the 
ability to get ahead of mastitis before clinical signs develop so the best cows stay at their best performance level and in the herd 
longer. The final and most critical development objective for Re-Tain® is to achieve regulatory approval of our manufacturing 
operations. 

Development status: Approval by the Center for Veterinary Medicine, U.S. Food and Drug Administration (FDA) of the New 

Animal Drug Application (NADA) for Re-Tain® is required before any sales of the product can be initiated. The NADA is comprised 
of five principal Technical Sections plus a sixty-day administrative review at the end. Each Technical Section can be reviewed and 
approved separately. By statute, each Technical Section submission is generally subject to one or more six-month review cycles by the 
FDA. Upon review and assessment by the FDA that all requirements for a Technical Section have been met, the FDA may issue a 
Technical Section Complete Letter. The current status of our work on these submissions to the FDA is as follows: 

1)    Environmental Impact: During the third quarter of 2008, we received the Environmental Impact Technical Section Complete 

Letter from the FDA. During the second quarter of 2021, we received further clarification through a new Environmental Impact 
Technical Section Complete Letter covering the current dosage regimen and labeling. 

2)    Target Animal Safety: During the second quarter of 2012, we received the Target Animal Safety Technical Section 

Complete Letter from the FDA. 

3)    Effectiveness: During the third quarter of 2012, we received the Effectiveness Technical Section Complete Letter from the 
FDA. The anticipated product label (which remains subject to FDA approval) carries claims for the treatment of subclinical mastitis 
associated with Streptococcus agalactiae, Streptococcus dysgalactiae, Streptococcus uberis, and coagulase-negative staphylococci in 
lactating dairy cattle.   

Subclinical mastitis, and the study required to achieve an effectiveness claim for it, is defined under the FDA/Center for 
Veterinary Medicine Guidance #49: Target Animal Safety and Drug Effectiveness Studies for Anti-Microbial Bovine Mastitis 
Products (Lactating and Non-Lactating Cow Products). Trial eligibility requires both pretreatment samples to be positive for the 
mastitis pathogen (except for Staphylococcus aureus and Streptococcus agalactiae, where a single pretreatment sample qualifies a 
cow for enrollment). For all pathogens, both samples taken between 14 and 28 days post treatment (and at least 5 days apart) must be 
negative to be judged a cure. These conservative criteria generally result in enrolling cows with chronic subclinical disease, which 
rarely self-resolves. 

4)    Human Food Safety: During the third quarter of 2018, we received the Human Food Safety Technical Section Complete 

31 

 
ImmuCell Corporation 

Letter from the FDA confirming, among other things, a zero milk discard period and a zero meat withhold period during and after 
treatment with our product. Achieving this critical differentiating feature for our product encouraged us to continue the significant 
product development investment necessary to bring Re-Tain® to market. It would have been hard to justify an ongoing investment of 
this nature in a product without this significant competitive advantage. During the second quarter of 2021, we updated this Technical 
Section Complete Letter with FDA approval of the official analytical method to measure Nisin in milk. 

5)    Chemistry, Manufacturing and Controls (CMC): The CMC Technical Section is very complex and comprehensive. Having 

previously achieved the four different Technical Section Complete Letters from the FDA discussed above, approval of the CMC 
Technical Section is the fifth and final significant step required before Re-Tain® product sales can be initiated in the United States. 
Implementing Nisin DS (the active pharmaceutical ingredient) production, which is a required component of the CMC Technical 
Section, has been the most lengthy part of this project. We previously entered into an agreement with a multi-national pharmaceutical 
ingredient manufacturer for our commercial-scale supplies of DS. However, we determined during 2014 that the agreement did not 
offer us the most advantageous supply arrangement in terms of either cost or long-term dependability. As a result, we presented this 
product development opportunity to a variety of large and small animal health companies. While such a corporate partnership could 
have provided access to a much larger sales and marketing team and allowed us to avoid the large investment in a commercial-scale 
production facility, we concluded that a partner would have taken an unduly large share of the gross margin from all future product 
sales of Re-Tain®. However, the regulatory and marketing feedback that we received from prospective partners, following their due 
diligence, was positive. During the third quarter of 2014, we completed an investment in facility modifications and processing 
equipment necessary to produce our DS at small-scale at our 56 Evergreen Drive facility. This small-scale facility was used to: i) 
expand our process knowledge and controls, ii) establish operating ranges for critical process parameters, iii) conduct product stability 
studies, iv) optimize process yields and v) determine the cost of production. We believe these efforts have reduced the risks associated 
with our investment in the commercial-scale DS production facility. Having raised equity during 2016 and 2017, we were able to 
move away from these earlier partnering strategies and assume control over the commercial-scale manufacturing process in our own 
facility. During the fourth quarter of 2015, we acquired land near our existing Portland facility for the construction of a new 
commercial-scale DS production facility. We commenced construction of this facility during the third quarter of 2016 and completed 
construction during the fourth quarter of 2017. Equipment installation and qualification was initiated during the third quarter of 2017 
and completed during the third quarter of 2018. Total construction and equipment costs aggregated approximately $20.8 million. With 
construction of the facility complete, we continue to work with outside parties to investigate improvements to our DS production 
yields as well as potential efficacy enhancements. 

Under the FDA’s phased submission process, we made a first-phased submission covering just the DS during the first quarter of 

2019. The first-phased DS submission included data from the DS Registration Batches produced at commercial scale in our new DS 
manufacturing facility. This first-phased submission was followed by a second-phased submission covering both DS and DP, during 
the first quarter of 2021. The second-phased DS and DP submission responded to comments raised by the FDA regarding the first-
phased DS submission and included detailed information about the manufacturing process and controls for DP. One of the key 
components of the second-phased DS and DP submission was also demonstrating stability of the product through expiry. During the 
third quarter of 2021, the FDA issued a Technical Section Incomplete Letter with regard to this second-phased DS and DP submission. 
This response was not unexpected as it is common for the FDA to issue queries and comments, especially related to an aseptic DP 
submission. We made a second submission of the DS and DP Technical Section during the first quarter of 2022. During the third 
quarter of 2022, we received a Technical Section Incomplete Letter from the FDA with regards to this second DS and DP submission 
of the CMC Technical Section. The submission required that internal and external laboratories re-develop and qualify several 
analytical tests and associated controls. We made this third DS and DP submission of the CMC Technical Section during the third 
quarter of 2023. In late October of 2023, the FDA notified us that it was refusing to review our submission because Norbrook was 
identified as the DP manufacturer in our submission, but the FDA was expecting that we would identify our own in-house services as 
the DP manufacturer (instead of Norbrook). This miscommunication was due to a statement in our April 2022 response to an FDA 483 
inspectional observation in which we noted that Norbrook was expected to exit the DP manufacturing agreement with us at the end of 
2022, which would have required us to procure and install some long lead time equipment (filler and labeler) in our DS suite in late 
2022. Instead, we were able to extend the agreement with Norbrook to complete the manufacture of DP inventory for the initial 
commercial sales under our Controlled Launch strategy. As a result, we continued to identify Norbrook as our DP manufacturer. In 
fact, Norbrook has recently initiated production of the launch goods, and this work has been extended into 2024 with labeling and 
final packaging occurring post-approval. As a result of this miscommunication, we were required to re-submit the CMC Technical 
Section. If the FDA issues a Technical Section Complete Letter in response to this re-submission, we believe that we could commence 
commercial sales approximately ten months from the November of 2023 re-submission date, allowing for the re-setting of the six-
month CMC review period by the FDA followed by a two-month administrative review period and approximately two additional 
months for labeling, packaging and shipping. 

While being prudent with how much cash we invest into inventory that would have short expiry dating if market launch is 
delayed, we have built and are building more DS inventory during 2022 and 2023 to support the initial commercial sales of Re-Tain®. 

32 

 
ImmuCell Corporation 

As discussed above, our contract manufacturer has agreed to convert this DS to DP during the fourth quarter of 2023 and into 2024 
with associated product expirations of 18 to 24 months from the date of manufacture. We anticipate a pause in the supply of product to 
market after the initial launch goods are sold and before the product is re-launched with DP produced by our in-house aseptic filling 
operations (if that investment is re-funded) or by an alternative contractor that we have not identified to date.     

Our DS manufacturing facility and that of our DP contract manufacturer (and our potential future DP manufacturing facility) are 

subject to ongoing FDA inspections. During the third quarter of 2019, the FDA conducted a pre-approval inspection of our DS 
facility. This resulted in the issuance of certain deficiencies as identified on the FDA’s Form 483. We submitted responses and data 
summaries in a phased manner over the fourth quarter of 2019 and first quarter of 2020. During the first quarter of 2022, the FDA 
conducted another pre-approval inspection of our DS facility. This also resulted in the issuance of certain deficiencies as identified on 
the FDA’s Form 483. We have responded to all of the queries. Early during the first quarter of 2024, the FDA conducted another pre-
approval inspection of our DS facility. This resulted in the issuance of one deficiency as identified on the FDA’s Form 483. Since 
then, we have fully responded to this inspectional observation. The facility of our DP contract manufacturer is subject to similar 
inspectional compliance obligations.     

We have always believed that the fastest route to FDA approval and market launch is with the services of Norbrook (an FDA-

approved DP manufacturer), reducing our risk by benefiting from their demonstrated expertise in aseptic filling. From 2010 to the 
present, we have worked with Norbrook under several amended contract manufacturing agreements covering the DP formulation, 
aseptic filling and final packaging services. Under our current agreement, Norbrook will provide DP for the Controlled Launch with 
production in the fourth quarter of 2023 and into 2024. We believe this will enable us to commence sales of Re-Tain® without delay 
upon receipt of the anticipated FDA approval.   

Our potential alternative third-party options for the formulation and aseptic filling services that are presently being performed by 

Norbrook are narrowed considerably because our product cannot be formulated or filled in a facility that also processes traditional 
antibiotics (i.e., beta lactams). During the first quarter of 2022, we initiated an investment in the installation of equipment to produce 
DP at our own facility at 33 Caddie Lane. Given the loss in gross margin during the first ten months of 2023 caused by the slowdown 
in production output that was necessary to remediate the production contamination events, we have decided to defer the completion of 
this investment for the time being. Subject to the timing of our installation and validation work, we anticipate FDA approval of this 
facility (which is a requirement for commercial manufacturing) at least two years from when this project is restarted allowing for two 
six-month review cycles. This will be a post-approval submission. If we decide to complete our potential future DP manufacturing 
facility, such facility will, upon completion, be subject to FDA inspection and approval. We anticipate it would have enough 
formulation and aseptic filling capacity to exceed the expected production capacity of our DS facility, which is approximately $7 
million to $10 million in annual sales. This production capacity estimate is based on our assumptions as to product pricing and does 
not yet reflect inventory build strategies in advance of product approval or ongoing yield improvement initiatives. Establishing our 
own DP formulation and aseptic filling capability provides us with the longer-term advantage of controlling the manufacturing process 
for Re-Tain® in one facility, thereby potentially reducing our manufacturing costs and eliminating international cold chain shipping 
logistics and costs. The DP formulation and aseptic filling operation, if completed, will be located in existing facility space that we 
had intended to utilize to double our DS production capacity if warranted by sales volumes following market launch. As a result, if we 
decide to complete this DP facility (rather than utilizing a third party for these services), we would need to explore alternative 
strategies (in parallel with ongoing DS yield improvement initiatives) to expand our DS production capacity. This integrated 
manufacturing capability for Re-Tain® would substantially reduce our dependence on third parties. Upon completion of our 
formulation and aseptic filling facility, the only significant third‐party input for Re-Tain® would be the DP syringes. It is anticipated 
that Hubert De Backer of Belgium (HDB) will supply these syringes in accordance with purchase orders that we submit. HDB is a 
syringe supplier for many of the largest participants in the human and veterinary medical industries, and with whom Norbrook 
presently works. Based on HDB’s performance history and reputation in the industry, we are confident that HDB will be a dependable 
supplier of syringes in the quantity and of the quality needed for Re-Tain®.   

Other product development initiatives: Our second most important product development initiative has been focused on other 
improvements, line extensions or additions to our First Defense® product line. We are currently working to establish USDA claims 
for our bivalent bulk powder formulation of First Defense Technology®. Subject to the availability of resources, we intend to begin 
new development projects that are aligned with our core competencies and market focus. We also remain interested in acquiring, on 
suitable terms, other new products and technologies that fit with our sales focus on the dairy and beef industries, subject to the 
availability of the needed funding. 

Sales and Marketing Expenses and Selling Strategy 

We see ourselves as the “non-pharma” pharma company. Rather than offering variations of “copy-cat” technology like vaccines 
and antibiotics, we have taken the path less traveled by developing first-of-their kind products fueled by novel active ingredients such 
as polyclonal antibodies (for First Defense®) and bacteriocins (for Re-Tain®). While we expect that Re-Tain® could be a significant 

33 

 
ImmuCell Corporation 
market disrupter, we project the First Defense® market could be larger, especially during the first years of the commercial launch of 
Re-Tain®. We anticipate that these category developing innovations will drive greater value for the livestock industry and, in turn, for 
our stockholders.   

During the year ended December 31, 2023, sales and marketing expenses decreased by 3%, or $102,000, to $3.1 million in 

comparison to $3.2 million during the year ended December 31, 2022, amounting to 18% and 17% of product sales during the years 
ended December 31, 2023 and 2022, respectively. Sales and marketing expenses included non-cash depreciation and stock-based 
compensation expenses of $182,000 and $158,000 during the years ended December 31, 2023 and 2022, respectively. Our budgetary 
guideline for 2023 and after is to keep these expenses under 20% of total sales. By decreasing sales and marketing expenses by 
$321,000 during the fourth quarter of 2023 in comparison to the fourth quarter of 2022, we were able to reduce sales and marketing 
expenses by $102,000 for the year ended December 31, 2023. We continue to leverage the efforts of our small sales force by using 
animal health distributors.   

The First Defense® product line serves dairy and beef producers by protecting their calf crop from scours, the leading cause of 

pre-weaning mortality and morbidity. When calves are healthy during this crucial development period, they mature into more 
productive milking cows and more efficient beef generators. Our primary competition in this category is vaccines that are also 
regulated for effectiveness and safety by the USDA. However, vaccine results are inherently variable. COVID breakthrough infections 
in humans have reminded us that a vaccine does not guarantee immunity. That is true for our competitors as well. In the most 
controlled research settings, only 80% of animals respond to a vaccine. This leaves 20% of the calf crop unprotected when the scour 
prevention program relies on scour vaccines. Those unprotected calves can be disease carriers. Not only are they more susceptible to 
death or likely to require life-saving treatment (sometimes with antibiotics), but they also shed pathogens into the environment 
creating a greater disease pressure for their herd mates. The First Defense® product line removes the inconsistency inherent with 
vaccine protection. We sell the only USDA-licensed products in the scour prevention category that are therapeutic multi-valent 
polyclonal antibodies. This technology eliminates a producer’s reliance on a variable vaccine response to generate antibodies and, 
instead, can protect every calf equally with a measured dose of antibody-driven immunity against both bacterial and viral scour 
pathogens. 

During the twelve-month period ended December 31, 2023, we treated more calves than our next largest calf-level competitive 

product, which is a vaccine administered to the newborn at birth. Compared to the dam-level competitive products (which are vaccines 
given to the cow pre-calving), we are second in sales dollars to the market leader. Despite these successes, there remains significant 
opportunity to displace more competition within North America. There is also opportunity to grow our sales by expanding into 
international markets. We are being strategic in how we invest in international market development in order not to divert our limited 
resources away from achieving domestic growth, which is often more efficient to obtain.     

We believe that Re-Tain® could revolutionize the way that mastitis is managed by making earlier treatment of subclinical 

infections (while these cows are still producing saleable milk) economically feasible by not requiring a milk discard or a meat 
withhold during, or for a period of time after, treatment. No other FDA-approved mastitis treatment product on the market can offer 
this value proposition. We believe we can demonstrate a return on investment to the dairy producer and the milk processor that will 
justify a premium over other mastitis treatments on the market today, which are all sold subject to milk discard and meat withhold 
requirements. By creating this value for our customers, we believe we can, in turn, create value for our stockholders. 

Re-Tain® could increase the lifetime profitability of a cow and reduce disease transfer to herd mates. It is common practice to 
move sick cows from their regular herd group to a sick cow group for treatment and the related milk discard. This movement causes 
stress on the cow and a reduction in milk production. While practices may vary farm-to-farm, there would be no requirement to move 
cows treated with our product, allowing this costly drop in production to be avoided. It is generally current practice to treat mastitis 
only when the disease has progressed to the clinical stage where the milk from an infected cow cannot be sold, leaving most 
subclinically infected cows untreated. Without a milk discard cost, we expect producers to be more motivated to identify and treat 
cows at the subclinical stage. This creates a substantial animal welfare benefit. By treating mastitis early at the subclinical level, 
producers could preserve optimal milk yields. We also know that animals infected with subclinical mastitis have higher abortion rates 
and often progress to the clinical disease state requiring antibiotic treatment and milk discard. We believe that societal animal welfare 
objectives will put more and more pressure on the industry to treat cows with subclinical infections. 

The over-use of antibiotics that are medically important to human healthcare is a growing public health concern of our society 
and an active issue with the FDA, largely because of the growing evidence that this over-use contributes to antibiotic resistance and 
the rise of “super-bugs”. Sustainability objectives require that less antibiotics be used in food producing animals, yet a new FDA-
approved drug to treat mastitis has not been developed in years. Our product improves sustainability by utilizing a bacteriocin as an 
alternative to traditional antibiotics that are used in human medicine. In the big picture, we are introducing an entirely new class of 
antimicrobial as an animal drug, a bacteriocin, that does not promote resistance against antibiotics used in human medicine making it 

34 

 
more socially responsible. The industry could keep treating this very significant disease with traditional antibiotics, but it takes 
innovation to bring a bacteriocin like Nisin to market. Re-Tain® would, when introduced, offer a needed alternative to these 
traditional antibiotics, while at the same time improving milk quality and the quantity of milk produced by treated cows. We believe 
our product fits very well with where the industry is going to be in the coming years.   

ImmuCell Corporation 

As with all new products, the market determines the value. Our objective is to gain market acceptance of this new product 
concept as we develop a new product category. Despite our product’s exciting benefits, it will take time to change this longstanding 
treatment paradigm and develop this new market. It will take time for the market to understand, evaluate, implement and adapt to the 
use and benefits of Re-Tain®. Based on consultations with industry experts and key opinion leaders, we have opted to carefully 
control the launch of this novel product over the first 18 to 24 months after FDA approval, as we seek to transform the way that 
mastitis is treated in the dairy industry over the long term. Our goal is to help early adopters select treatment candidates, develop easy 
to use protocols, optimize treatment results and realize a positive return on their investment. We intend to limit initial distribution of 
Re-Tain® to a level that enables our sales team to select the optimal dairy farms at which to introduce Re-Tain® and to limit the initial 
number of participating farms so that the desired levels of support and guidance relating to effective usage of Re-Tain® can be 
provided with our available resources. We recognize that it will be important to manage expectations from the producer to the milk 
processor because it is possible that processors may express reservations with regards to the zero milk discard claim. Our Controlled 
Launch strategy reduces the amount of inventory that we would need to build at risk before regulatory approval is achieved. This 
strategic choice means that we have elected not to pursue an alternative strategy that might have maximized short-term, initial sales 
quickly through a mass market approach where we provide product to distribution and let them sell it to as many farms as possible. 
While we are dedicated to increasing our sales revenue, we must consider the damage a mass market strategy could cause to the long-
term value of the product. We have seen products sold by much larger companies that were substantially damaged by such failed 
market launch strategies. We continue to develop detailed launch plans, focusing on the readiness of dairy operators to successfully 
introduce Re-Tain® to their herds. We believe that these prudent steps, while potentially leading to lower initial Re-Tain® revenues, 
may create a smooth and successful launch and could safeguard the longer term performance of our investment in Re-Tain®. We also 
believe that the operational adjustments and accommodations that dairy farmers will need to make to effectively use Re-Tain® and 
avoid the potential problems described under PART I: ITEM 1A – RISK FACTORS, to this Annual Report will not be so 
burdensome as to deter its adoption and usage. Our overarching objective is to minimize the risk of early-stage unsatisfactory 
outcomes that could harm the longer-term prospects and market acceptance of Re-Tain®.   

Administrative Expenses 

During the year ended December 31, 2023, administrative expenses decreased by 6%, or $130,000, to $2.1 million in comparison 

to $2.3 million during the year ended December 31, 2022. Administrative expenses included the accrual of $222,000 in deferred 
compensation expense (consisting of earned and unused paid time off) during the first quarter of 2022. This accrual was increased by 
$8,000 during 2023 reflecting current wage rates. Administrative expenses amounted to 12% of product sales during both of the years 
ended December 31, 2023 and 2022. Administrative expenses included non-cash depreciation and stock-based compensation expenses 
of $210,000 and $148,000 during the years ended December 31, 2023 and 2022, respectively. We strive to be efficient with these 
expenses while funding all the legal, audit and other costs associated with being a publicly-held company. Given the growth in our 
business, our administrative staff has increased to four employees reporting to our CEO. Prior to 2014, we had limited our investment in 
investor relations spending. Beginning in the second quarter of 2014, we initiated an investment in a more active investor relations 
program. Given travel restrictions related to the COVID-19 pandemic, this initiative has pivoted to a virtual meeting format, which is 
less expensive. Having experienced this efficiency, it is our intent to continue with the same strategy, for the most part, even as travel 
restrictions have been largely eliminated. At the same time, we continue to provide full disclosure of the status of our business and 
financial condition in three quarterly reports and one annual report each year, as well as in Current Reports on Form 8-K when legally 
required or deemed appropriate by management. We believe these efforts have helped us access the capital markets to fund our growth 
objectives. Considering inflation and all the necessary support services that fit into this category, we believe that approximately $2 
million to $2.5 million per year is an efficient budget goal to fund the administrative expenses of a publicly-held company.   

Net Operating Loss 

During the year ended December 31, 2023, our net operating loss of $5.7 million was significantly larger than our net operating 

loss of $2.3 million during the year ended December 31, 2022. The $3.4 million increase in our net operating loss during the year 
ended December 31, 2023 was caused by the $3.8 million decrease in gross margin, offset, in part, by a $330,000 reduction in 
operating expenses. 

Other Expenses, net   

During the year ended December 31, 2023, other expenses, net, aggregated $22,000 in comparison to other expenses, net, of 
$187,000 during the year ended December 31, 2022. During the year ended December 31, 2023, other income included insurance 

35 

 
ImmuCell Corporation 

recovery income of $365,000 paid under our business interruption policy related to the product contamination losses previously 
described and a recovery from a vendor’s insurance policy related to an equipment malfunction that were received during the third 
quarter of 2023. No such insurance recoveries were received during 2022. Interest expense increased to $476,000 during the year 
ended December 31, 2023 from $349,000 during the year ended December 31, 2022. Non-cash amortization of debt issuance and debt 
discount costs (which is included as a component of interest expense) was $23,000 and $8,000 during the years ended December 31, 
2023 and 2022, respectively. We anticipate that our interest expense will be $563,000 and $492,000 during the years ending 
December 31, 2024 and 2025, respectively. Interest income was $97,000 and $153,000 during the years ended December 31, 2023 and 
2022, respectively. The loss (gain) on disposal of property, plant and equipment was $8,000 and ($7,000) during the years ended 
December 31, 2023 and 2022, respectively.   

Loss Before Income Taxes   

During the year ended December 31, 2023, our loss before income taxes was $5.8 million in comparison to our loss before 

income taxes of $2.5 million during the year ended December 31, 2022. 

Income Taxes and Net Loss 

During the years ended December 31, 2023 and 2022, we recorded income tax expense of $5,000 and $8,000, respectively, 
which is comprised of minimum state tax liabilities. Our net loss of $5.8 million, or $0.75 per basic share, during the year ended 
December 31, 2023 was in comparison to net loss of $2.5 million, or $0.32 per basic share, during the year ended December 31, 2022.   

We have substantial net operating loss carryforwards that largely offset future income tax expense. As of December 31, 2023, 

our federal net operating loss carryforward was $17.8 million. As of December 31, 2023, our state net operating loss carryforward was 
$4.7 million. On December 22, 2017, the Tax Cuts and Jobs Act was signed into law. This legislation made significant changes in the 
U.S. tax laws, including a reduction in the corporate tax rates, changes to net operating loss carryforwards and carrybacks, and a repeal 
of the corporate alternative minimum tax. The legislation reduced the U.S. corporate tax rate from 34% to 21%. Our income tax rate 
differs from this statutory tax rate primarily because we are currently providing for a full valuation allowance against our deferred tax 
assets. While we are recording this full valuation allowance, we are not recognizing the benefit of our tax losses.   

In addition to the results discussed above from our Statements of Operations, we believe it is important to consider our 
Statements of Cash Flows in the accompanying audited financial statements to assess the cash generating ability of our operations.   

Critical Accounting Policies and Estimates  

The audited financial statements are presented on the basis of accounting principles that are generally accepted in the United 
States. All professional accounting standards that were effective and applicable to us as of December 31, 2023 have been taken into 
consideration in preparing the financial statements. The preparation of financial statements requires that we make estimates and 
judgments that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosure of contingent assets and 
liabilities. On an on-going basis, we evaluate our estimates. Significant estimates include our valuation of inventory, long-lived assets, 
deferred tax assets and costs of goods sold. We base our estimates on historical experience and on various other assumptions that we 
believe are reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of 
assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different 
assumptions or conditions. We have chosen to highlight certain policies that we consider critical to the operations of our business and 
understanding of our financial statements. These critical accounting estimates have been consistently applied. 

We sell products that provide Immediate Immunity™ to newborn dairy and beef cattle. We recognize revenue in accordance with 

the five step model in ASC 606.  These include the following: i) identification of the contract with the customer, ii) identification of the 
performance obligations in the contract, iii) determination of the transaction price, iv) allocation of the transaction price to the separate 
performance obligations in the contract and v) recognition of revenue associated with performance obligations as they are satisfied. 
We recognize revenue at the time of shipment (including to distributors) for substantially all products, as title and risk of loss pass to the 
customer on delivery to the common carrier after concluding that collectability is reasonably assured. We do not bill for or collect sales 
tax because our sales are generally made to distributors and thus our sales to them are not subject to sales tax. We generally have 
experienced an immaterial amount of product returns.   

Inventory includes raw materials, work-in-process and finished goods and is recorded at the lower of cost, on the first-in, first-out 

method, or net realizable value (determined as the estimated selling price in the normal course of business, less reasonably predictable 
costs of completion, disposal and transportation). Work-in-process and finished goods inventories include materials, labor and 
manufacturing overhead. Inventory is a critical accounting policy because of the estimates and assumptions used by management to 
determine its cost accounting and because of the variability of the cost per dose due to fluctuations in the biological yield. 

36 

 
ITEM 7A — QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK 

ImmuCell Corporation 

None 

ITEM 8 — FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA 

Our financial statements, together with the notes thereto and the reports of the independent registered public accounting firms 

thereon, are set forth on Pages F-1 through F-26 at the end of this Annual Report. The index to these financial statements is as follows: 

Report of Wipfli LLP, Independent Registered Public Accounting Firm (PCAOB ID#344) 
Balance Sheets as of December 31, 2023 and 2022 
Statements of Operations during the years ended December 31, 2023 and 2022 
Statements of Stockholders’ Equity during the years ended December 31, 2022 and 2023 
Statements of Cash Flows during the years ended December 31, 2023 and 2022 
Notes to Audited Financial Statements 

F-1 to F-2 
F-3 
F-4 
F-5 
F-6 to F-7 
F-8 to F-26 

ITEM 9 — CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND  FINANCIAL 

DISCLOSURE 

None 

ITEM 9A — CONTROLS AND PROCEDURES 

Disclosure Controls and Procedures: Our management, with the participation of the individual who serves as our principal 
executive and principal financial officer, evaluated the effectiveness of our disclosure controls and procedures (as defined in Exchange 
Act Rules 13a-15(e) and 15d-15(e) of the Securities Exchange Act of 1934, as amended (the Exchange Act)) as of December 31, 
2023. Based on this evaluation, that officer concluded that our disclosure controls and procedures were effective as of that date. 
Disclosure controls and procedures are designed to ensure that information required to be disclosed by us in the reports that we file or 
submit under the Exchange Act is (i) recorded, processed, summarized and reported, within the time periods specified in the SEC’s 
rules and forms and (ii) accumulated and communicated to our management, including our principal executive and principal financial 
officer, as appropriate to allow timely decisions regarding required disclosures.   

Management’s Annual Report on Internal Control Over Financial Reporting: The management of the Company is responsible 

for establishing and maintaining adequate internal control over financial reporting. Our internal control over financial reporting is 
designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for 
external purposes in accordance with generally accepted accounting principles. We conducted an evaluation of the effectiveness of the 
internal controls over financial reporting based on the framework in Internal Control – Integrated Framework issued by the Committee 
of Sponsoring Organizations of the Treadway Commission. This evaluation included a review of the documentation of controls, 
evaluation of the design effectiveness of controls, testing the operating effectiveness of the controls and a conclusion on this 
evaluation. Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. 
Therefore, even those systems determined to be effective can provide only reasonable assurance with respect to financial statement 
preparation and presentation. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls 
may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may 
deteriorate. This Annual Report does not include an attestation report from our independent registered public accounting firm 
regarding internal control over financial reporting. Management’s internal control report was not subject to annual or quarterly 
attestation by our independent registered public accounting firm pursuant to rules of the Securities and Exchange Commission that 
permit the Company to provide only management’s report. 

Material Weaknesses in Internal Controls Over Financial Reporting: Management assesses the effectiveness of the Company’s 
internal control over financial reporting at the end of each quarter. During our assessment for the second quarter of 2023, we identified 
one material weakness where we did not properly capitalize non-cash depreciation expense as a component of inventory, which would 
have understated the value of our inventory as of June 30, 2023 by approximately $387,000 if the error had not been detected before 
we issued our Quarterly Report on Form 10-Q. This error had no impact on our product sales or cash position. We do believe that the 
design of our internal controls is effective, but those internal controls were not effectively operating. We have implemented some 
changes to our internal controls over financial reporting, including seeking additional consulting with subject matter experts on this 
matter. We remediated this material weakness in internal controls during the third quarter of 2023. Based on our assessment for the 
fourth quarter of 2023, we have concluded that our internal controls over financial reporting were effective as of December 31, 2023. 

Changes in Internal Controls over Financial Reporting: Our principal executive and principal financial officer and our Director 
of Finance and Administration periodically evaluate any change in internal control over financial reporting which has occurred during 

37 

 
ImmuCell Corporation 
the prior fiscal quarter. With the exception of the improvements to our internal controls described in the previous paragraph, we have 
concluded that there was no change in our internal control over financial reporting that occurred during the quarter ended December 
31, 2023 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting. 

ITEM 9B — OTHER INFORMATION 

None 

ITEM 9C — DISCLOSURE REGARDING FOREIGN JURISDICTIONS THAT PREVENT INSPECTIONS 

Not applicable 

PART III 

ITEM 10 — DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE 

LEADERSHIP STRUCTURE OF THE BOARD OF DIRECTORS 

With approval from the Board of Directors, the Compensation and Stock Option Committee determined that the title of 

President and CEO should be given to an individual not being the same person holding the title of Chair. The objective of this policy 
is to avoid a concentration of authority in any one person. Mr. Michael F. Brigham has served as President and CEO since February 
2000. He also serves as the Company’s Principal Financial Officer. Mr. Brigham is responsible for the day-to-day operations of the 
Company and for managing the actions of the two other executive officers, as well as those of several senior managers. Since 
February 2013, Dr. David S. Tomsche has served as Chair of the Board of Directors, leading the Company as its independent non-
executive board chair. Dr. Tomsche works with the CEO in preparing the agenda for each board meeting and presides over all board 
meetings and meetings of the non-employee directors. He provides advice to the CEO and serves as principal liaison between the 
board and the CEO. Ms. Bobbi Jo Brockmann has served as Vice President of Sales and Marketing since February 2015. Ms. 
Elizabeth L. Williams has served as Vice President of Manufacturing Operations since April 2016. Dr. Joseph H. Crabb served as 
Vice President and Chief Scientific Officer from December 1998 to February 2022, and he also served as Chair of the Board of 
Directors from June 2009 to February 2013. It is the policy of the Board of Directors to have a portion of the meeting without the 
presence of the executive officers each time that the board or any of its committees meets to assure that candid discussions of business 
matters are conducted with and without the influence of the executive officers. The board delegates certain authority and responsibility 
to its committees, as described below. 

THE BOARD OF DIRECTORS AND ITS COMMITTEES 

During the year ended December 31, 2023, the Board of Directors of the Company held four regular meetings and two 

special meetings and took action by unanimous written consent four times. The committees of the Board of Directors are the Audit 
Committee, the Compensation and Stock Option Committee and the Nominating Committee. During the year ended December 31, 
2023, each director attended at least 75 percent of the aggregate of (i) the total number of meetings of the Board of Directors and (ii) 
the total number of meetings held by all committees of the board on which he or she served (during the periods that he or she served). 
The board has not set a formal policy for required meeting attendance. A high level of attendance and participation is expected, and to 
date directors have fulfilled this expectation. At the first meeting of the board following this year’s Annual Meeting, executive officers 
will be appointed and, effective upon the election of directors at this year’s Annual Meeting, directors will be appointed to serve on 
the various board committees until the next Annual Meeting and until their successors are elected. 

The Board of Directors has established an Audit Committee for the purpose of overseeing the accounting and financial 

reporting processes of the Company and the audits and reviews of its financial statements. The Audit Committee engages the 
Company’s Independent Registered Public Accounting Firm, consults with such auditors with regard to audit plans, reviews the 
annual reports of the independent auditors, oversees the adequacy of the Company’s internal operating procedures and controls, meets 
with management and the auditors to review quarterly and annual financial results, authorizes the public release of press releases 
covering financial results, reviews and authorizes quarterly and annual reports filed with the SEC and otherwise oversees compliance 
with certain legal, ethical and regulatory matters. The development and manufacture of efficacious products with and without 
regulatory approval is subject to considerable risk. The Audit Committee takes the lead on oversight of credit, liquidity and 
operational risk, but the entire board, in conjunction with the executive officers, is very involved with reviewing Audit Committee 
recommendations and making independent assessments of risks in all areas of the Company’s business. The Company does not have a 
specific risk management department, but the Company’s Director of Finance and Administration and its President and CEO manage 
and contract for the Company’s insurance coverages in consultation with outside experts, in addition to identifying, managing and 
monitoring risk in areas not specifically covered by insurance. The Director of Finance and Administration reports to the President and 

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ImmuCell Corporation 

CEO, who reports to the board. The Audit Committee’s current members are Mr. Gathagan, Mr. Rosgen, Dr. Tomsche and Mr. 
Wainman. Mr. Wainman serves as Chair of the Audit Committee. All members of the Audit Committee meet the heightened 
independence and expertise requirements for audit committees under applicable SEC and NASDAQ Stock Market rules. The Audit 
Committee held eight meetings during the year ended December 31, 2023. The Audit Committee Report can be found later in this 
Annual Report, and the “Charter and Powers of the Audit Committee” has been posted on the Company’s website 
(http://immucell.com/wp-content/uploads/2017/05/charter.pdf). Information on the Company’s website does not constitute part of this 
Annual Report. 

Mr. Paul R. Wainman, who joined our Board of Directors in March of 2014 and currently serves as Chair of the Audit 

Committee, and Mr. Bryan K. Gathagan, who joined our Board of Directors in June of 2023, both meet the criteria for “audit 
committee financial expert” as defined by SEC rules. It is the opinion of the Company’s Board of Directors that the Company 
addresses its audit functions with a depth of penetration and rigor that meets the intent of the requirements of the Sarbanes-Oxley Act 
for the following reasons: 

●  All four members of the Audit Committee are independent directors, as defined by the SEC and NASDAQ. 

●  The four members of the Audit Committee have knowledge of accounting for both their own businesses as well as for 

the Company.   

● 

Internal audit work of the Company is performed by its Director of Finance and Administration, two Finance and 
Administrative Associates and one Manager of Administrative Operations. 

●  The Company also continuously reviews, at its own initiative, the expertise of the members of its Board of Directors and 

its Audit Committee. 

The Board of Directors has established a Compensation and Stock Option Committee (Compensation Committee) for the 
purpose of reviewing and recommending salary, bonus and other benefits for executive officers and directors of the Company. The 
Compensation Committee is responsible for administering the Company’s 2010 Stock Option and Incentive Plan and the 2017 Stock 
Option and Incentive Plan. The Compensation Committee’s current members are Ms. Basse and Mr. Rosgen, each of whom are 
independent directors. Mr. Rosgen serves as Chair of the Compensation Committee. The Compensation Committee held six meetings 
during the year ended December 31, 2023. The Compensation Committee does not have a charter but instead operates within the 
authority provided by the Company’s By-laws and authorizing resolutions adopted by the board. Its recommendations on executive 
and director compensation are subject to review and final approval by the Board of Directors, a majority of whose members are 
independent directors. The Compensation Committee considers recommendations from Mr. Brigham, the Company’s President and 
CEO, relevant to a determination of executive and director compensation, but neither he nor Ms. Brockmann participates in votes of 
the Compensation Committee or the board in this regard. In recent years, the Compensation Committee has not retained or relied upon 
outside consultants to assist in its determination of executive or director compensation but does consider available compensation data. 
During the end of 2021 and beginning of 2022, the Compensation Committee did consider certain information provided by a 
consultant.   

The Board of Directors has established a Nominating Committee for the purpose of recommending to the full board the 
number of directors to serve on the board, criteria for board membership and nominees for election to the board. In doing so, the 
Nominating Committee considers the integrity and relevant business experience of each nominee. The Nominating Committee values 
diversity, believing that the Company benefits from decision making that includes a range of opinions, points of view and experience. 
For instance, the Nominating Committee would not want a board comprised only of directors having principally financial expertise or 
only of directors whose principal experience is in the dairy and beef industries. Likewise, the Nominating Committee believes that a 
board consisting of all men or all women would not be as strong as a gender-diverse board. While there is always room for 
improvement, the Nominating Committee believes that it has made substantial progress towards achieving these board diversity goals. 
To be considered for nomination to the board, a candidate must meet the following minimum criteria: 1) reputation for integrity and 
high ethical standards, 2) willingness and ability to contribute positively to the Company’s decision-making process, 3) absence of any 
conflict of interest, or appearance of conflict of interest and 4) commitment to understanding the Company’s business and associated 
business risks and to devoting adequate time and effort to create value for the Company and its stockholders. All director nominees are 
recommended by the Nominating Committee and then approved by a vote of the board. The Committee’s current members are Ms. 
Basse and Mr. Wainman, each of whom are independent directors. Ms. Basse serves as Chair of the Nominating Committee. The 
Nominating Committee held three meetings during the year ended December 31, 2023. Upon recommendation of the Nominating 
Committee, the Board of Directors adopted a charter for the Nominating Committee in December 2012. This charter sets forth the 
policy to be utilized by the Nominating Committee in considering nominees identified by management to serve as directors for the 
Company. The Charter of the Nominating Committee has been posted to the Company’s website (http://immucell.com/wp-

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ImmuCell Corporation 
content/uploads/2019/04/Nominating-Committee-Charter.pdf). The Nominating Committee applies the same evaluation standards in 
considering nominees for director recommended by stockholders. 

GLORIA J. BASSE 

Age: 63 
Director since: June 2020 

MICHAEL F. BRIGHAM 

Age: 63 
Officer since: October 1991   
Director since: March 1999 

BOBBI JO BROCKMANN 

Age: 48 
Officer since: February 2015 
Director since: March 2017 

BRYAN K. GATHAGAN 

Age: 56 
Director since: June 2023 

BOARD OF DIRECTORS 

Ms. Basse was first elected to our Board of Directors at the 2020 Annual Meeting of 
Stockholders. Ms. Basse has been the senior executive director of Tonisity International, an 
animal nutrition company with offices in Ireland, Brazil and the United States, from 2017 to the 
present. Since 2016, Ms. Basse has been a Senior Associate at the Context Network, a business 
management and strategy consulting firm providing services to agriculture, biotechnology and 
food companies. She held various positions at Zoetis Inc. (formerly Pfizer Animal Health) from 
1985 to 2015 and most recently served as Vice President of its U.S. pork business. Ms. Basse is 
a graduate of the University of Wisconsin and earned her Masters in Business Administration 
from the University of Rochester. 

Mr. Brigham was appointed to serve as President and Chief Executive Officer in February 
2000, while maintaining the titles of Treasurer and Secretary, and was appointed to serve as a 
Director of the Company in March 1999. He previously had been elected Vice President of 
the Company in December 1998 and had served as Chief Financial Officer since October 
1991. He has served as Secretary since December 1995 and as Treasurer since October 1991. 
Prior to that, he served as Director of Finance and Administration since originally joining the 
Company in September 1989. Mr. Brigham served as a member of the Board of Directors of 
the United Way of York County from 2012 to 2019, serving as its Treasurer until June 2016 
and as Chair of the Board of Directors for one year and as a member of its Executive 
Committee. Mr. Brigham served as the Treasurer of the Board of Trustees of the Kennebunk 
Free Library from 2005 to 2011. He re-joined the Finance Committee of the library in 2012. 
Prior to joining the Company, he was employed as an audit manager for the public accounting 
firm of Ernst & Young in New York City. Mr. Brigham earned his Masters in Business 
Administration from New York University in 1989 and a Bachelor of Arts degree (with a 
double major in Economics and Spanish) from Trinity College in Hartford, Connecticut in 
1983. 

Ms. Brockmann served as a Director of the Company from March 2017 to September 2017 
and from January 2018 to the present. She was promoted to Vice President of Sales and 
Marketing in February 2015. She joined the Company as Director of Sales and Marketing in 
January 2010. Prior to that, she had been employed as Director of Sales since May 2008 and 
Sales Manager from February 2004 to April 2008 at APC, Inc. of Ankeny, Iowa, a developer 
and marketer of functional protein products for animal health and nutrition. Prior to that, she 
held other sales and marketing positions at APC, W & G Marketing Company, Inc. of Ames, 
Iowa, The Council for Agricultural Science and Technology of Ames, Iowa and Meyocks 
Group Advertising of West Des Moines, Iowa after graduating from Iowa State University. 

Mr. Gathagan is the owner and a managing member of broad Thinking, LLC, a management 
consulting firm and has 25 years of animal health experience. He is a founding member of 
Animalytix LLC and has served as its Chief Financial and Chief Technology Officer since it 
began operations in 2010. Prior to Animalytix, he was a senior executive and Vice President 
of IT and Finance for Intervet, Inc. and oversaw various finance, IT, and general business 
functions between 1998 to 2008, including 3 years in a global role based in The Netherlands. 
Before entering the animal health industry, he served as a Vice President at MBNA and 
Norwest Bank responsible for various IT functions and started his career in IT roles at the 
University of Maryland, Baltimore County (UMBC). He holds a BS in Information Systems 
Management from UMBC and an MS in Business from Johns Hopkins University. 

STEVEN T. ROSGEN 

Age: 58 
Director since: January 2018 

Mr. Rosgen joined the Board of Directors in January 2018 and the Audit Committee of the 
Board of Directors effective April 1, 2018. He is President of Strategem Research Inc., 
founded in 2005. Strategem’s mission is to capture and leverage customer insights when 
launching new technologies and revitalizing brands that have struggled in the market. Mr. 

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DAVID S. TOMSCHE, D.V.M. 

Age: 67 
Director since: December 2006 

PAUL R. WAINMAN 

Age: 59 
Director since: March 2014 

ImmuCell Corporation 

Rosgen specializes in value proposition development and pricing strategy. He has worked 
with global brands across a range of industries including multiple agricultural sectors (ag 
informatics, animal health, biotechnology, crop protection, fertilizer, equipment, finance, 
grain marketing, livestock production, retail and seed technology). Before founding 
Strategem, Mr. Rosgen was a senior partner with Street Smart Strategic Planning and 
Research Coordinator for Baker Lovick/BBDO Advertising. He holds a Bachelor of 
Commerce Degree from the University of Calgary. 

Dr. Tomsche was appointed to serve as Chair of the Board of Directors in February 2013. He 
served on the Nominating Committee of the Board of Directors until September 2017. He 
served on the Audit Committee from February 2014 through March 2014 and rejoined this 
committee in June 2021. He is a large animal veterinarian and owner of Leedstone Inc. 
(formerly Stearns Veterinary Outlet, Inc., an animal health distribution and milking system 
installation company) and of J-t Enterprises of Melrose, Inc., an exporter of ImmuCell 
products. He also is a dairy producer. He obtained his degrees from the University of 
Minnesota.  

Mr. Wainman was appointed to the Board of Directors on March 31, 2014 and is a member of 
the Audit and Nominating Committees and serves as Chair of the Audit Committee. He 
qualifies to serve as a “financial expert” given his background in accounting and finance. Mr. 
Wainman served as Chief Financial Officer of Hancock Lumber, a 725-employee lumber and 
building products company located in Casco, Maine, from February 2016 and its President 
and CFO from January 2020 until, most recently, becoming President and CEO in January 
2023. From April 2015 until February 2016, he was a business strategy and financial 
consultant specializing in the paper and greeting card industry. Prior to that, he was President 
of Kleinfeld, a personalized wedding stationery company, from September 2013 until April 
2015.   From 2005 to 2012, he was President and CEO of William Arthur, Inc., a division of 
Hallmark Cards, where he led a 275-employee manufacturer of luxury stationery products. 
Prior to that, he served another division of Hallmark Cards as CFO and COO from 1998 to 
2004. He obtained a degree in Accounting and Financial Control from Sheffield City 
University in England and qualified as a Chartered Accountant of England and Wales in 1990. 

Each of these individuals brings distinct skills, perspectives and attributes to the Board of Directors. Ms. Basse has extensive 
animal health marketing experience. Mr. Brigham is an executive officer who has been employed by the Company since 1989 and has 
a financial and accounting background. Ms. Brockmann is an executive officer who has been employed by the Company since 2010 
and has extensive experience in the sales and marketing of products to the dairy and beef industries. Mr. Gathagan has significant 
experience with information systems and finance as well as relevant animal health industry experience. Mr. Rosgen has a depth of 
experience in sales and marketing and product branding. Dr. Tomsche is a veterinarian and owner of a distribution outlet of products 
and services for animals, as well as an investor in and owner of dairy farms, and brings to the board substantial expertise in our 
industry. Mr. Wainman has extensive managerial and financial training and expertise. 

EXECUTIVE OFFICERS OF THE COMPANY 

Our executive officers as of March 8, 2024 were as follows: 

MICHAEL F. BRIGHAM 

See Biography above. 

BOBBI JO BROCKMANN 

See Biography above. 

ELIZABETH L. WILLIAMS 

(Age: 68, Officer since April 2016) joined the Company in April 2016 as Vice President of 
Manufacturing Operations. Previously, she led the U.S. Region for Zoetis as Vice President, 
Global Manufacturing and Supply. Prior to that, she held multiple Site Leader positions at 
Pfizer Animal Health facilities in Lincoln, Nebraska (2008-2011), Conshohocken, 
Pennsylvania (2006-2008) and Lee’s Summit, Missouri (2003-2006). She led the 
manufacturing organization (1999-2003) and the Process and Product Development group 
(1995-1999), achieving registration, approval and successful scale-up of five new products at 
the Lee’s Summit facility. She earned her Masters of Business Administration from Rockhurst 
University in Kansas City, Missouri and her Bachelor’s degree in Biology from the University 
of Missouri. 

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ImmuCell Corporation 

There is no family relationship between any director, executive officer or person nominated or chosen by the Company to 

become a director or executive officer. Except for Mr. Brigham and Ms. Brockmann (both of whom are Company employees), each of 
the Company’s existing directors or nominees qualifies as an “independent director” as defined under applicable NASDAQ Stock 
Market rules. In evaluating the independence of directors, the board did consider related party transactions described elsewhere in this 
Annual Report. Any vacancies that may occur during the year may be filled by the Board of Directors to serve until the next Annual 
Meeting. 

CODE OF BUSINESS CONDUCT AND ETHICS 

In December 2003, the Board of Directors of the Company adopted a Code of Business Conduct and Ethics (the Code) that 
applies to all employees of the Company, including the Company’s President and CEO and Director of Finance and Administration. 
This Code is a set of written standards that are designed to deter wrongdoing and to promote: (i) honest and ethical conduct, (ii) full, 
fair, accurate, timely and understandable disclosure in reports filed with the SEC, (iii) compliance with applicable laws, (iv) prompt 
internal reporting of violations of the Code and (v) accountability for adherence to the Code. On March 19, 2014, the Board of 
Directors approved several minor revisions to this Code. This Code has been posted on the Company’s website 
(http://immucell.com/wp-content/uploads/2017/05/2014-Code-of-Business-Conduct-and-Ethics-revision.pdf) and was filed as Exhibit 
14 to the Company’s Current Report on Form 8-K dated March 20, 2014. The Company will mail a copy of its Code of Business 
Conduct and Ethics to any interested party without charge, upon request. Such requests may be made by mail to the Company’s 
Secretary at ImmuCell Corporation, 56 Evergreen Drive, Portland, Maine 04103. 

SECTION 16(a) BENEFICIAL OWNERSHIP REPORTING COMPLIANCE 

Section 16 of the Securities Exchange Act of 1934 requires the Company’s directors, executive officers and persons who own 

more than ten percent of a registered class of the Company’s equity securities to file with the SEC initial reports of ownership and 
reports of changes in ownership of common stock and other equity securities of the Company. Officers, directors and greater than ten 
percent stockholders are required by SEC regulation to furnish the Company with copies of all Section 16(a) reports they file. To the 
best of the Company’s knowledge, based solely on review of the copies of such reports furnished to the Company and written 
representations that no other reports were required, during the year ended December 31, 2023, the Company’s directors, executive 
officers and greater than ten percent beneficial owners complied on a timely basis with all applicable Section 16(a) filing 
requirements. 

ITEM 11 — EXECUTIVE COMPENSATION 

The following table contains information as to the compensation paid by the Company to its non-executive directors for 

services rendered during the year ended December 31, 2023: 

Name 
Gloria J. Basse 
David S. Cunningham   
Bryan K. Gathagan 
Steven T. Rosgen 
David S. Tomsche, D.V.M. 
Paul R. Wainman 

Stock 
Option 
Awards(1)(2)      

All Other 
Compensation 

Fees   
Earned or   
Paid 
in Cash 
  $ 
  $ 
  $ 
  $ 
  $ 
  $ 

28,000     $ 
14,000     $ 
15,000     $ 
30,000     $ 
42,000     $ 
30,000     $ 

0     $ 
0     $ 
35,700     $ 
0     $ 
0     $ 
0     $ 

    Total 
0     $ 
0     $ 
0     $ 
0     $ 
0     $ 
0     $ 

28,000  
14,000  
50,700  
30,000   
42,000   
30,000  

(1)  This amount represents the total non-cash compensation expense related to stock options granted during the year ended December 

31, 2023, which is being expensed over the three-year vesting period from grant date. 

(2)  As of December 31, 2023, Ms. Basse had 35,000 stock options outstanding; Mr. Cunningham had no stock options outstanding; 
Mr. Gathagan had 15,000 stock options outstanding; Mr. Rosgen had 20,000 stock options outstanding; Dr. Tomsche had 20,000 
stock options outstanding; and Mr. Wainman had 20,000 stock options outstanding. 

Officers of the Company, who are also directors, do not receive additional compensation for attendance at Board of 

Directors’ meetings or committee meetings (and no such employee directors are members of any of the Company’s Committees). 
Effective January 1, 2022, this annual fee paid to non-employee directors was increased from $24,000 to $28,000. Effective January 1, 
2022, compensation for members of the Audit Committee was set at $2,000 per year. Effective January 1, 2013, the additional 
compensation for the Chair of the Board of Directors was set at $12,000 per year (Dr. Tomsche served as Chair during 2023). All fees 
paid to directors are paid quarterly. Historically, fees paid to directors were payable on the first day of the quarter during which they 

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were earned. However, beginning in the first quarter of 2023 fees paid to directors become payable at the end of the quarter during 
which they are earned. No other increases in these fees have been made since those noted above. 

ImmuCell Corporation 

On March 19, 2018, each of the then serving outside directors were granted non-qualified stock options to purchase 15,000 

shares of common stock under the 2017 Stock Option and Incentive Plan. These options had an exercise price equal to $7.08 per 
share, which was the fair market value of the common stock on the date of grant, and they vested on March 18, 2021. These options 
expired March 18, 2023. At the time first appointed to the board, Ms. Basse was granted a non-qualified stock option to purchase 
15,000 shares of common stock under the 2017 Stock Option and Incentive Plan with terms similar to those previously granted to all 
other directors. Ms. Basse’s options have an exercise price equal to $4.81 per share, which was the fair market value of the common 
stock on the date of grant (June 29, 2020), and vest on June 28, 2023. These options expire if not exercised by June 28, 2025 or, if 
earlier, within one month (twelve months if in the case of death or disability) after termination of service as a director. On June 17, 
2021, each of the then serving outside directors were granted non-qualified stock options to purchase 10,000 shares of common stock 
under the 2017 Stock Option and Incentive Plan. These options have an exercise price equal to $10.04 per share, which was the fair 
market value on the date of grant, and they vest on June 16, 2024. These options expire if not exercised by June 16, 2026 or, if earlier, 
within one month (twelve months in the case of death or disability) after termination of service as a director. On December 15, 2022, 
each of the then serving outside directors were granted non-qualified stock options to purchase 10,000 shares of common stock under 
the 2017 Stock Option and Incentive Plan. These options have an exercise price equal to $6.52 per share, which was the fair market 
value on the date of grant, and they vest on December 14, 2025. These options expire if not exercised by December 14, 2027 or, if 
earlier, within one month (twelve months in the case of death or disability) after termination of service as a director. At the time first 
appointed to the board, Mr. Gathagan was granted a non-qualified stock option to purchase 15,000 shares of common stock under the 
2017 Stock Option and Incentive Plan with terms similar to those previously granted to all other directors. Mr. Gathagan’s options 
have an exercise price equal to $5.11 per share, which was the fair market value of the common stock on the date of grant (June 28, 
2023), and vest on June 27, 2026. These options expire if not exercised by June 27, 2028 or, if earlier, within one month (twelve 
months if in the case of death or disability) after termination of service as a director. 

INDEMNIFICATION AGREEMENTS 

The Company has entered into indemnification agreements with its directors and executive officers in substantially the form 
approved by the stockholders at the 1989 Annual Meeting, as recently updated. The agreements include procedures for reimbursement 
by the Company of certain liabilities and expenses which may be incurred in connection with service as a director or executive officer. 
The Company expects to enter into indemnification agreements with individuals who become directors in the future, as well as such 
executive officers of the Company as the Board of Directors may from time to time determine. 

EXECUTIVE COMPENSATION 

Under the By-laws, executive officers are elected by the Board of Directors at its first meeting following each Annual 

Meeting of Stockholders of the Company, and each serves for a one-year term and until his or her successor is chosen and qualified, 
but all officers are employees of the Company “at will”, and their service may be terminated at any time without payment of severance 
or similar benefits, except as described under EMPLOYMENT AGREEMENTS below. 

The following table contains information as to the total compensation paid by the Company to its named executive officers 

for services rendered during the years ended December 31, 2023 and 2022:  

SUMMARY COMPENSATION TABLE 

Name and Principal Position 

  Year    

    Salary 

    Bonus(1)      

Stock 
Option 
Awards(2)      

All Other 
Compensation(3)        Total 

Michael F. Brigham 

President, Chief Executive Officer, 
Treasurer and Secretary 

2023   $  355,267   $ 
2022     $  342,944     $ 

 0   $ 
   0     $ 

0    $ 
4,500      $ 

39,968   $ 
252,500     $ 

395,235   
599,944 

Bobbi Jo Brockmann 

Vice President of Sales and Marketing 

2023   $  268,846   $  25,000   $ 
0     $ 
2022     $  259,522     $ 

0    $ 
0      $ 

29,675   $ 
28,159     $ 

323,521   
287,681   

Elizabeth L. Williams 

Vice President of Manufacturing Operations 

2023   $  264,173   $  25,000   $ 
0   $ 
2022   $  254,678   $ 

0    $ 
4,500    $ 

22,899   $ 
20,760   $ 

312,072  
279,938  

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(1)  Bonus (or variable compensation) is reported in the year earned, even if paid in the beginning of the next year. 
(2)  This amount represents the total non-cash compensation expense related to stock option awards granted during the year that they 

were earned, which is being expensed over the three-year vesting period from grant date. 

(3)  This amount includes Company-paid contributions to a 401(k) Plan, health insurance premiums and life insurance premiums 

that are available to all employees of similar employment status, if elected. For Mr. Brigham, this amount includes 
approximately $8,000 and $222,000 worth of earned and unused paid time off described under EMPLOYMENT 
AGREEMENTS below that was accrued during the first quarter of 2023 and 2022, respectively, and is due to be paid to Mr. 
Brigham upon his separation from the Company. For Ms. Brockmann, this amount also includes the personal use of a Company-
owned vehicle. 

Generally during the first quarter of each year, annual salaries and bonuses for these named executive officers are determined 

at the discretion of the Compensation and Stock Option Committee. Effective January 30, 2021, the annual salary for Mr. Brigham 
was increased by 2% to $332,212. Effective February 26, 2022, the annual salary for Mr. Brigham was increased by 4% to $345,500. 
Effective February 25, 2023, the annual salary for Mr. Brigham was increased by 3.5% to $357,592. No such annual increase was 
provided to Mr. Brigham for 2024. Effective January 30, 2021, the annual salary for Ms. Brockmann was increased by 2% to 
$251,400, and she was paid $12,645 in variable compensation related to her 2020 performance. Effective February 26, 2022, the 
annual salary for Ms. Brockmann was increased by 4% to $261,456, and she was paid $22,500 and awarded 18,000 stock options with 
an exercise price of $8.15 per share in variable compensation related to her 2021 performance. Effective February 25, 2023, the annual 
salary for Ms. Brockmann was increased by 3.5% to $270,606, and she was paid a discretionary bonus of $25,000 on March 1, 2023. 
Effective February 10, 2024, the annual salary for Ms. Brockmann was increased by 4% to $281,430. Effective January 30, 2021, the 
annual salary for Ms. Williams was increased by 4% to $246,707. Effective February 26, 2022, the annual salary for Ms. Williams 
was increased by 4% to $256,575. Effective February 25, 2023, the annual salary for Ms. Williams was increased by 3.5% to 
$265,555, and she was paid a performance bonus of $25,000 on August 30, 2023. Effective February 10, 2024, the annual salary for 
Ms. Williams was increased by 4% to $276,177. 

Effective December 1, 2022 through November 30, 2023, the Company contributed approximately $18,400 per year towards 
the cost of family health insurance coverage for each full-time employee electing this coverage. Effective December 1, 2023 through 
November 30, 2024, this annual contribution is $20,755. Mr. Brigham and Ms. Brockmann elected this coverage. Effective December 
1, 2022 through November 30, 2023, the Company contributed approximately $12,600 per year towards the cost of employee and 
spouse health insurance coverage for each full-time employee electing this coverage. Effective December 1, 2023 through November 
30, 2024, this annual contribution is $14,250. Ms. Williams elected this coverage.   

EMPLOYMENT AGREEMENTS 

We enter into compensation agreements (which are publicly filed) with our three executive officers. Effective March 28, 2022, 

we entered into an Amended and Restated Separation and Deferred Compensation Agreement (the “Deferred Compensation 
Agreement”) with Mr. Brigham (our President and CEO) that superseded and replaced in its entirety a March 2020 severance 
agreement between the Company and Mr. Brigham. Upon separation from the Company for any reason, Mr. Brigham’s Deferred 
Compensation Agreement allows Mr. Brigham to be paid, among other amounts, all earned and unused paid time off (which expense 
totaling $222,379 was accrued during the first quarter of 2022 and $230,162 and $222,379 was included in accounts payable and 
accrued expenses on the accompanying balance sheets as of December 31, 2023 and 2022, respectively) and to receive up to an 
additional $300,000 in deferred compensation (which amount is being accrued over the three-year period ending in January 2025). 
This deferred compensation payment vested as to $100,000 on January 1, 2023 and an additional $100,000 on January 1, 2024. An 
additional $100,00 will vest on January 1, 2025, provided that Mr. Brigham is employed by the Company as of January 2025. The 
vested amounts would be paid upon the earlier of January 31, 2025 or within thirty (30) days following his separation from the 
Company. As of December 31, 2023 and 2022, $200,000 and $100,000, respectively, was included in accounts payable and accrued 
expenses on the accompanying balance sheets. In addition, upon termination of Mr. Brigham’s employment (a) by the Company other 
than for cause, (b) due to death or disability or (c) by Mr. Brigham for good reason, in each case as described and defined in the 
Deferred Compensation Agreement, the Company agrees to pay Mr. Brigham 100% of his then current annual base salary and a lump 
sum payment equal to the employer portion of the costs of continued health benefits for Mr. Brigham and his covered dependents for a 
twelve-month period following termination, and certain equity incentive awards granted to Mr. Brigham would continue to vest 
following such termination in accordance with the terms of the Deferred Compensation Agreement. Incentive Compensation 
Agreements with Mr. Brigham, Ms. Brockmann (our Vice President of Sales and Marketing) and Ms. Williams (our Vice President of 
Manufacturing Operations) allow these executives to earn incentive compensation if certain regulatory and financial objectives are 
met during the year to which the agreement relates, as specified in their agreements. Amounts related to these incentive compensation 
agreements are accrued over the period they are earned (when it is probable that the amounts will be earned) based on our best 
estimate of the amounts expected to be earned. 

44 

 
  
 
 
  
 
ImmuCell Corporation 

OUTSTANDING EQUITY AWARDS 

Stock options are the only outstanding form of equity awards to the Company’s employees and directors. The following table 

contains information on stock options held by the Company’s named executive officers that were outstanding as of December 31, 
2023: 

Name 

Michael F. Brigham 

Bobbi Jo Brockmann 

Elizabeth L. Williams 

Number of 
Shares 
Underlying 
Unexercised 
Stock Options 
- 
Exercisable 

Number of 
Shares 
Underlying 
Unexercised 
Stock Options - 
Unexercisable(1)   

Stock Option 
Exercise 
Price 

Date 
of 
Grant 

Expiration 
Date 

25,000        
20,000        

0   

10,000        
10,000        
7,500   
10,000   
0   

25,000   
10,000   
7,500   
10,000   
0   

0     $ 
0     $ 
1,000    $ 

0     $ 
0     $ 
0    $ 
0    $ 
18,000    $ 

0    $ 
0    $ 
0    $ 
0    $ 
1,000    $ 

5.84      02/10/2017    02/09/2027 
7.80      01/08/2018    01/07/2028 
8.15    06/15/2022    06/14/2032 

7.54      12/16/2015    12/15/2025 
5.84      02/10/2017    02/09/2027 
7.80    01/08/2018    01/07/2028 
5.18    12/11/2019    12/10/2029 
8.15    01/31/2022    01/30/2032 

6.70    04/04/2016    04/03/2026 
5.84    02/10/2017    02/09/2027 
7.80    01/08/2018    01/07/2028 
5.18    12/11/2019    12/10/2029 
8.15    06/15/2022    06/14/2032 

 (1)  These stock options become exercisable three years after the date of grant. 

ITEM 12 — SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND  RELATED 

STOCKHOLDER MATTERS 

The following table sets forth certain information known to the Company regarding beneficial ownership of the Company’s 
common stock as of April 15, 2024 of (i) each person known to the Company to be the beneficial owner of more than five percent of 
the Company’s common stock, (ii) each of the Company’s directors, (iii) each of the Company’s executive officers named in the 
“SUMMARY COMPENSATION TABLE” above, (iv) the five largest stockholders listed in this table as a group and (v) all 
directors and executive officers of the Company as a group: 

Name of Beneficial Owner 
Sandra F., Norman H. and Brian L. Pessin (2) 
Jonathan E. Rothschild (3) 
Michael F. Brigham (4) 
Joseph H. Crabb. Ph.D. (5) 
David S. Tomsche D.V.M. (6) 
Elizabeth Williams (7) 
Bobbi Jo Brockmann (8) 
Gloria J. Basse (9) 
Paul R. Wainman (10) 
Steven T. Rosgen (11) 
Bryan K. Gathagan (12) 
Directors and executive officers as a group (8 persons) (13) 
The five largest stockholders listed in this table as a group (14) 

45 

Shares of the 
Company’s 
Common 
Stock 
Beneficially 
Owned (1) 

Percent of 
the 
Company’s 
Common 
Stock 
Beneficially 
Owned 

1,182,720        
514,003       
260,752       
142,845       
113,606       
52,500        
46,021        
25,000        
16,269        
10,000       
0       
524,148       
2,213,926       

15.3 % 
6.6 % 
3.3 % 
1.8 % 
1.5 % 
0.7 % 
0.6 % 
0.3 % 
0.2 % 
0.1 % 
0.0 % 
6.6 % 
28.4 % 

 
 
  
  
    
    
    
 
 
 
  
  
    
      
      
      
    
   
 
    
 
   
 
  
     
      
      
    
  
    
  
    
  
    
 
  
    
 
 
   
 
 
   
   
 
      
   
   
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
  
   
  
    
   
   
   
   
    
    
    
    
   
   
   
   
ImmuCell Corporation 

(1)  The persons named in the table have sole voting and investment power with respect to all shares of common stock shown to be 
beneficially owned by them, subject to the information contained in the footnotes to this table. The figures in the table include 
shares of common stock covered by stock options which are currently exercisable or will become exercisable on June 16, 2024. 

(2)  The address for the Pessins is 400 East 51st Street, PH31, New York, NY 10022. The Pessins have indicated that each of them 
has sole voting and dispositive/investment power with respect to the shares of common stock owned by them individually: 
Norman H. Pessin–644,019 shares (8.3%), Sandra F. Pessin–401,819 shares (5.2%) and Brian L. Pessin–136,882 shares (1.8%). 

(3)  The address for Mr. Rothschild is c/o Arterio, Inc., 1061-B Shary Circle, Concord, CA 94518. This figure includes 226,416 

shares of common stock held by Arterio Inc., a corporation owned solely by Mr. Rothschild. 

(4)  This figure includes 45,000 vested stock options that are described in the “OUTSTANDING EQUITY AWARDS” table and 
11,000 shares of common stock held by the mother of Mr. Brigham. Mr. Brigham also holds 1,000 unvested stock options that 
were granted during 2022. 

 (5)  Dr. Crabb holds these shares of common stock jointly with his former spouse. He is listed in this table for informational purposes 

because he is one of the five largest stockholders. 

(6)  This figure includes 6,987 shares of common stock held by immediate family members of Dr. Tomsche. This figure includes 

10,000 stock options that vest on June 16, 2024. Dr. Tomsche also holds 10,000 unvested stock options. 

(7)  This figure is comprised of 52,500 vested stock options that are described in the “OUTSTANDING EQUITY AWARDS” 

table. Ms. Williams also holds 1,000 unvested stock options that were granted during 2022. 

 (8)  This figure includes 7,466 shares of common stock held by Ms. Brockmann and 1,055 shares of common stock held jointly with 
her spouse and 37,500 vested stock options that are described in the “OUTSTANDING EQUITY AWARDS” table. Ms. 
Brockmann also holds 18,000 unvested stock options that were granted during 2022. 

 (9)  This figure is comprised of 15,000 vested stock options and 10,000 stock options that vest on June 16, 2024. Ms. Basse also 

holds 10,000 unvested stock options.   

 (10)  This figure includes 10,000 stock options that vest on June 16, 2024. Mr. Wainman also holds 10,000 unvested stock options. 

 (11)  This figure includes 10,000 stock options that vest on June 16, 2024. Mr. Rosgen also holds 10,000 unvested stock options. 

 (12)  Mr. Gathagan holds 15,000 unvested stock options. 

 (13)  This figure includes 150,000 vested stock options and 40,000 stock options that vest on June 16, 2024. 

 (14)  This figure includes 45,000 vested stock options and 10,000 stock options that vest on June 16, 2024. 

The Company does not permit employees or directors to engage in hedging transactions with respect to the Company’s stock. 

Equity Compensation Plan Information 

The table below summarizes the common stock reserved for issuance upon the exercise of stock options outstanding as of 

December 31, 2023 or that could be granted in the future: 

Number of shares   
to be issued upon exercise of 
outstanding options 

Weighted-average 
exercise price of 
outstanding options 

Number of shares   
remaining  available for  future issuance 
under  stock-based compensation  plans 
(excluding  shares  reflected in first 
column of this table) 

618,500 

— 
618,500   

$6.82 

— 
$6.82   

202,000 

— 
202,000 

Equity compensation plans 
approved by stockholders 
Equity compensation plans not 
approved by stockholders 

Total 

ITEM 13 — CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR  INDEPENDENCE 

David S. Tomsche (Chair of our Board of Directors) is a controlling owner of Leedstone Inc., a domestic distributor of our 
products (the First Defense product line and CMT). His affiliated company purchased $231,405 and $587,677 of products from us 
during the years ended December 2023 and 2022, respectively, all on terms consistent with those offered to other distributors of similar 
status. Our accounts receivable (subject to standard and customary payment terms) due from this affiliated company aggregated $42,507 

46 

 
   
 
 
 
 
 
   
 
 
 
 
 
 
 
and $46,426 as of December 31, 2023 and 2022, respectively. 

ImmuCell Corporation 

The President and CEO of the Company is responsible for reviewing related party transactions. To assist with this process, 

each director is asked to complete an annual questionnaire covering transactions of this nature and other related matters. Regardless of 
dollar value, all related party transactions are reviewed with the relevant director and with the entire Board of Directors, if necessary. 

Except for Mr. Brigham and Ms. Brockmann (both of whom are Company employees), each of the Company’s existing 

directors qualifies as an “independent director” as defined under the applicable NASDAQ Stock Market rules. Each member of the 
Company’s Audit Committee, Nominating Committee, and Compensation and Stock Option Committee are independent under the 
applicable NASDAQ Stock Market rules. 

ITEM 14 — PRINCIPAL ACCOUNTANT FEES AND SERVICES 

Principal Accounting Fees and Services 

On April 12, 2019, the Company engaged Wipfli LLP for the first time as its Independent Registered Public Accounting Firm 

(IRPAF) for the year ended December 31, 2019 beginning with a customary review of the Company’s financial statements as of and 
for the quarter ended March 31, 2019. On March 20, 2020, the Company engaged Wipfli LLP as its IRPAF for the year ended 
December 31, 2020. On March 23, 2021, the Company engaged Wipfli as its IRPAF for the year ended December 31, 2021. On 
March 23, 2022, the Company engaged Wipfli as its IRPAF for the year ended December 31, 2022. On March 22, 2023, the Company 
engaged Wipfli as its IRPAF for the year ending December 31, 2023. 

Set forth below is a summary of the fees incurred for services rendered by the Company’s Independent Registered Public 

Accounting Firm, Wipfli LLP, for the years ended December 31, 2023 and 2022: 

Audit Fees (1) 
Audit-Related Fees (2) 
Total 

2023 
140,000 
550 
140,550 

   $ 

   $ 

2022 
130,000 
19,000 
149,000 

   $ 

   $ 

(1)  The Audit Fees include fees billed by or accrued for the auditors for their reviews of the quarterly financial statements included 

in the Company’s Quarterly Reports on Form 10-Q for the first three quarters of each year and their audits of the annual financial 
statements included in the Company’s Annual Reports on Form 10-K and incidental expenses.   

 (2)  Audit-Related Fees include fees paid to Wipfli LLP related to the issuance of a consent for a registration statement during 2023 

and related to the restatement of the Company’s Quarterly Reports on Form 10-Q for the three-month periods ended June 30, 
2022 and March 31, 2022 during 2022. 

Pre-Approval Policy 

In accordance with the procedures set forth in its charter, the Audit Committee pre-approves all auditing services and 

permitted non-audit services (including the fees and other terms of those services) to be performed for the Company by its 
Independent Registered Public Accounting Firm. Such approval may be accomplished by approving the terms of the engagement prior 
to the engagement of the Independent Registered Public Accounting Firm with respect to such services or by establishing detailed pre-
approval policies and procedures to govern such engagement. The Audit Committee authorizes management to spend up to $5,000 per 
year for services that are not anticipated at the time of the engagement, provided that the Audit Committee is promptly informed of 
such services. 

AUDIT COMMITTEE REPORT 

The Audit Committee of the Board of Directors reviews the financial reporting process, the system of internal controls, the 

audit process and the process for monitoring compliance with certain applicable laws and regulations. The Audit Committee is 
responsible for selecting and hiring the Independent Registered Public Accounting Firm and meets with those accountants (in person 
or by telephone) before each quarterly press release concerning the Company’s financial results. The Audit Committee approves the 
public disclosure and filing with the SEC of the related press releases. After reviewing the quarterly and annual reports that are 
prepared by management, the Audit Committee authorizes the filing of such reports with the SEC. All members of the Audit 
Committee meet the heightened independence and expertise requirements for audit committees under applicable NASDAQ Stock 
Market rules. Mr. Wainman joined the Audit Committee in March of 2014 and serves as its Chair. Mr. Rosgen joined the Audit 
Committee in April of 2018. Dr. Tomsche joined the Audit Committee in June of 2021. Mr. Gathagan joined the Audit Committee in 

47 

 
 
 
 
 
  
 
  
  
  
  
  
  
  
 
 
 
 
 
 
  
  
   
 
  
  
 
ImmuCell Corporation 
June of 2023. The Audit Committee currently operates under a charter adopted by the board in 2004. The Company has a January 1st 
to December 31st fiscal year. The Audit Committee met eight times during 2023. 

The Audit Committee has reviewed the Company’s audited financial statements for the year ended December 31, 2023 and 

discussed such statements with management and Wipfli LLP, the Company’s independent registered public accounting firm for 2023. 
The Audit Committee has discussed with Wipfli LLP various communications that Wipfli LLP is required to provide to the Audit 
Committee including the matters required to be discussed by Public Company Accounting Oversight Board (PCAOB) Auditing 
Standards No. 1301 (Communication with Audit Committees). The Audit Committee received from Wipfli LLP the written 
disclosures and the letter required by applicable requirements of the PCAOB concerning independence and has discussed the auditor’s 
independence with them. 

Based on the review and discussions noted above, the Audit Committee recommended to the board that the Company’s 

audited financial statements be included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2023 
and be filed with the SEC. 

This report of the Audit Committee shall not be deemed incorporated by reference by any general statement into any filing 

under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, except to the extent that the 
Company specifically incorporates this information by reference and shall not otherwise be deemed filed under such Acts. 

 Submitted by: Audit Committee 
Bryan K. Gathagan 
Steven T. Rosgen 
David S. Tomsche, D.V.M. 
Paul R. Wainman, Chair 

ITEM 15 — EXHIBITS AND FINANCIAL STATEMENT SCHEDULES 

PART IV 

3.1 

3.2 

3.3 

3.4 

3.5 

3.6 

3.7 

4.1 

4.1A 

4.1B 

4.1C 

4.1D 

Certificate of Incorporation of the Company (incorporated by reference to Exhibit 3.1 of the Company’s 
1987 Registration Statement No. 33-12722 on Form S-1 as filed with the Commission). 
Certificate of Amendment to the Company’s Certificate of Incorporation effective July 23, 1990 
(incorporated by reference to Exhibit 3.2 of the Company’s Annual Report on Form 10-K for the year 
ended December 31, 2008). 
Certificate of Amendment to the Company’s Certificate of Incorporation effective August 24, 1992 
(incorporated by reference to Exhibit 3.3 of the Company’s Annual Report on Form 10-K for the year 
ended December 31, 2008). 
Certificate of Amendment to the Company’s Certificate of Incorporation effective June 16, 2016 
(incorporated by reference to Exhibit 3.1 of the Company’s Amended Current Report on Form 8-K/A 
filed on June 16, 2016). 
Certificate of Amendment to the Company’s Certificate of Incorporation effective June 18, 2018 
(incorporated by reference to Exhibit 3.1 of the Company’s Current Report on Form 8-K filed on June 18, 
2018). 
Certificate of Amendment to the Company’s Certificate of Incorporation effective June 11, 2020 
(incorporated by reference to Exhibit 3.1 of the Company’s Current Report on Form 8-K filed on June 11, 
2020). 
Bylaws of the Company as amended (incorporated by reference to Exhibit 3.4 of the Company’s Annual 
Report on Form 10-K for the year ended December 31, 2008). 
Rights Agreement dated as of September 5, 1995, between the Company and American Stock Transfer 
and Trust Co., as Rights Agent, which includes as Exhibit A thereto the form of Right Certificate and as 
Exhibit B thereto the Summary of Rights to Purchase Common Stock (incorporated by reference to 
Exhibit 4.1 of the Company’s Quarterly Report on Form 10-Q for the quarterly period ended March 31, 
2009). 
First Amendment to Rights Agreement dated as of June 30, 2005 (incorporated by reference to 
Exhibit 4.1A of the Company’s Current Report on Form 8-K filed on July 5, 2005). 
Second Amendment to Rights Agreement dated as of June 30, 2008 (incorporated by reference to Exhibit 
4.1A of the Company’s Annual Report on Form 10-K for the year ended December 31, 2008). 
Third Amendment to Rights Agreement dated as of August 9, 2011 (incorporated by reference to Exhibit 
4.1 of the Company’s Quarterly Report on Form 10-Q for the three-month period ended June 30, 2011). 
Fourth Amendment to Rights Agreement dated as of June 16, 2014 (incorporated by reference to Exhibit 

48 

 
  
 
 
 
 
 
ImmuCell Corporation 

4.1E 

4.1F 

4.1G 

4.1H 

4.2 

4.1D of the Company’s Current Report on Form 8-K filed on June 17, 2014). 
Fifth Amendment to Rights Agreement dated as of April 15, 2015 (incorporated by reference to Exhibit 
4.1 of the Company’s Quarterly Report on Form 10-Q for the three-month period ended March 31, 2015). 
Sixth Amendment to Rights Agreement dated as of August 10, 2017 (incorporated by reference to Exhibit 
4.1 of the Company’s Quarterly Report on Form 10-Q for the three-month period ended June 30, 2017). 
Seventh Amendment to Rights Agreement dated as of August 10, 2022 (incorporated by reference to 
Exhibit 4.1 of the Company’s Amended Quarterly Report on Form 10-Q/A filed on November 21, 2022). 
Eighth Amendment to Rights Agreement dated as of August 9, 2023 (incorporated by reference to 
Exhibit 4.1 of the Company’s Quarterly Report on Form 10-Q filed on August 10, 2023). 
Description of Securities Registered Under Section 12 of the Securities Exchange Act of 1934, as 
amended (incorporated by reference to Exhibit 4.2 of the Company’s Annual Report on Form 10-K for 
the year ended December 31, 2020). 

10.1+  Form of Indemnification Agreement (updated) entered into with each of the Company’s Directors and 

Officers (incorporated by reference to Exhibit 10.3A of the Company’s Annual Report on Form 10-KSB 
for the year ended December 31, 2006). 

10.2+  Amendment to Employment Agreement between the Company and Michael F. Brigham dated March 26, 

10.3+ 

2010 (incorporated by reference to Exhibit 10.6 of the Company’s Annual Report on Form 10-K for the 
year ended December 31, 2009). 
2010 Stock Option and Incentive Plan of the Company (incorporated by reference to Exhibit 10.6 of the 
Company’s Annual Report on Form 10-K for the year ended December 31, 2010). 

10.4+  Form of Incentive Stock Option Agreement (incorporated by reference to Exhibit 10.7 of the Company’s 

10.5+ 

Annual Report on Form 10-K for the year ended December 31, 2010). 
2017 Stock Option and Incentive Plan of the Company (incorporated by reference to Exhibit 10.1 of the 
Company’s Quarterly Report on Form 10-Q for the three-month period ended June 30, 2017). 
10.6+  Form of Incentive Stock Option Agreement (incorporated by reference to Exhibit 10.9 of the Company’s 

Annual Report on Form 10-K for the year ended December 31, 2019). 

10.7+  Amendment to the 2017 Stock Option and Incentive Plan of the Company (incorporated by reference to 

Exhibit 10.7 of the Company’s Annual Report on Form 10-K for the year ended December 31, 2022). 

10.8+*  Fifth Amended and Restated Incentive Compensation Agreement between the Company and Elizabeth L. 

Williams dated as of March 27, 2024. 

10.9+  Amended and Restated Separation and Deferred Compensation Agreement between the Company and 

Michael F. Brigham dated as of March 28, 2022 (incorporated by reference to Exhibit 10.9 of the 
Company’s Annual Report on Form 10-K filed on March 30, 2022). 

10.10+  Amended and Restated Incentive Compensation Agreement between the Company and Michael F. 
Brigham dated as of March 28, 2023 (incorporated by reference to Exhibit 10.13 of the Company’s 
Annual Report on Form 10-K for the year ended December 31, 2022). 

10.11+* Fourth Amended and Restated Incentive Compensation Agreement between the Company and Bobbi Jo 

Brockmann dated as of March 27, 2024. 

10.12  Development Services and Commercial Supply Agreement between the Company and Norbrook 

Laboratories Limited dated as of September 5, 2019 (incorporated by reference to Exhibit 99.2 of the 
Company’s Current Report on Form 8-K filed on September 11, 2019). 

10.13  Amending Agreement between the Company and Norbrook Laboratories dated as of March 4, 2024 

10.14 

10.15 

(incorporated by reference to Exhibit 10.1 of the Company’s Current Report on Form 8-K filed March 6, 
2024). 
Indenture of Lease for Premises Located in Portland, Maine between the Company and TVP, LLC 
(incorporated by reference to Exhibit 99.2 of the Company’s Current Report on Form 8-K filed on 
September 17, 2019). 
Second Amendment of Indenture of Lease for Premises Located in Portland, Maine between the 
Company and TVP, LLC dated as of August 15, 2022 (incorporated by reference to Exhibit 99.1 to the 
Company’s Current Report on Form 8-K filed on August 17, 2022). 

10.16  Third Amendment of Indenture of Lease for Premises Located in Portland, Maine between the Company 
and TVP, LLC dated as of November 14, 2023 (incorporated by reference to Exhibit 10.1 of the 
Company’s Current Report on Form 8-K filed on November 16, 2023). 

10.17  Term Note for $5,100,000 between the Company and Gorham Savings Bank dated March 11, 2020 

(incorporated by reference to Exhibit 99.2 of the Company’s Current Report on Form 8-K filed on March 
12, 2020). 

10.18  Loan Agreement for $5,100,000 between the Company and Gorham Savings Bank dated March 11, 2020 
(incorporated by reference to Exhibit 99.4 of the Company’s Current Report on Form 8-K filed on March 
12, 2020). 

49 

 
ImmuCell Corporation 

10.19  Allonge to and Amendment of Term Note, dated March 23, 2022, between the Company and Gorham 

Savings Bank (incorporated by reference to Exhibit 99.1 of the Company’s Current Report on Form 8-K 
filed on March 24, 2022). 

10.20  Mortgage Modification Agreement, dated March 23, 2022, between the Company and Gorham Savings 
Bank (incorporated by reference to Exhibit 99.2 of the Company’s Current Report on Form 8-K filed on 
March 24, 2022). 

10.21  Term Note for $3,500,000 between the Company and Gorham Savings Bank dated March 11, 2020 

(incorporated by reference to Exhibit 99.3 of the Company’s Current Report on Form 8-K filed on March 
12, 2020). 

10.22  Loan Agreement for $3,500,000 between the Company and Gorham Savings Bank dated March 11, 2020 
(incorporated by reference to Exhibit 99.5 of the Company’s Current Report on Form 8-K filed on March 
12, 2020). 

10.23  Line of Credit Agreement for up to $1,000,000 executed by ImmuCell Corporation in favor of Gorham 

Savings Bank dated March 11, 2020 (incorporated by reference to Exhibit 99.2 of the Company’s Current 
Report on Form 8-K filed on March 12, 2020). 

10.24  Allonge to and Amendment of Line of Credit Loan for up to $1,000,000 between the Company and 

Gorham Savings Bank dated March 23, 2022 (incorporated by reference to Exhibit 10.23 of the 
Company’s Annual Report on Form 10-K for the year ended December 31, 2022). 

10.25  Allonge to and Amendment of Line of Credit between the Company and Gorham Savings Bank, dated 

February 22, 2024 (incorporated by reference to Exhibit 10.1 of the Company’s Current Report on Form 
8-K filed on February 27, 2024). 

10.26  Note Purchase Agreement executed by the Company in favor of the Maine Technology Institute dated 

10.27 

June 12, 2020 (incorporated by reference to Exhibit 99.2 of the Company’s Current Report on Form 8-K 
filed on June 16, 2020). 
Subordinated Promissory Note for $500,000 executed by the Company in favor of the Maine Technology 
Institute dated June 12, 2020 (incorporated by reference to Exhibit 99.3 of the Company’s Current Report 
on Form 8-K filed on June 16, 2020). 

10.28  Note Purchase Agreement executed by the Company in favor of the Maine Technology Institute dated 

10.29 

June 30, 2021 (incorporated by reference to Exhibit 99.1 of the Company’s Current Report on Form 8-K 
filed on July 6, 2021). 
Subordinated Promissory Note for $400,000 executed by the Company in favor of the Maine Technology 
Institute dated June 30, 2022 (incorporated by reference to Exhibit 99.2 of the Company’s Current Report 
on Form 8-K filed on July 6, 2021). 

10.30  Term Note for $1,500,000 executed by the Company in favor of Gorham Savings Bank dated December 
15, 2020 (incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed 
on December 17, 2020). 

10.31  Loan Agreement for $1,500,000 executed by the Company in favor of Gorham Savings Bank dated 

December 15, 2020 (incorporated by reference to Exhibit 10.2 to the Company’s Current Report on Form 
8-K filed on December 17, 2020). 

10.32  Term Note for $2,000,000 executed by ImmuCell Corporation in favor of Gorham Savings Bank dated 

July 17, 2023 (incorporated by reference to Exhibit 10.1 of the Company’s Current Report on Form 8-K 
filed on July 21, 2023). 

10.33  Loan Agreement, by and between ImmuCell Corporation and Gorham Savings Bank dated July 17, 2023 

(incorporated by reference to Exhibit 10.2 of the Company’s Current Report on Form 8-K filed on July 
21, 2023). 

10.34  Economic Recovery/SSBCI Program Loan Promissory Note for $1,000,000 executed by ImmuCell 

Corporation in favor of the Finance Authority of Maine dated July 17, 2023 (incorporated by reference to 
Exhibit 10.3 of the Company’s Current Report on Form 8-K filed on July 21, 2023). 

10.35  Economic Recovery Loan Program Loan Agreement, by and between ImmuCell Corporation and the 

14 

Finance Authority of Maine dated July 17, 2023 (incorporated by reference to Exhibit 10.4 of the 
Company’s Current Report on Form 8-K filed on July 21, 2023). 
Code of Business Conduct and Ethics (incorporated by reference to Exhibit 14 of the Company’s Current 
Report on Form 8-K filed on March 20, 2014). 

23.1*  Consent of Independent Registered Public Accounting Firm. 
24.1 
31* 
32* 

Power of Attorney (incorporated by reference to the signature page of this Form 10-K). 
Certification Pursuant to Rule 13a-14(a). 
Certification Pursuant to Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 
2002. 
ImmuCell Corporation Clawback Policy. 

97.1* 

50 

 
 
ImmuCell Corporation 

101.INS  XBRL Instance Document-the instance document does not appear in the Interactive Data File because its 

XBRL tags are embedded within the Inline XBRL document. 

101.SCH  Inline XBRL Taxonomy Extension Schema Document. 
101.CAL  Inline XBRL Taxonomy Extension Calculation Linkbase Document. 
101.DEF  Inline XBRL Taxonomy Extension Definition Linkbase Document. 
101.LAB Inline XBRL Taxonomy Extension Label Linkbase Document. 
101.PRE  Inline XBRL Taxonomy Extension Presentation Linkbase Document. 
104 

Cover Page Interactive Data File-the cover page interactive data file does not appear in the Interactive 
Data File because its XBRL tags are embedded within the Inline XBRL document. 

+ 
* 

Management contract or compensatory plan or arrangement. 
Filed herewith. 

ITEM 16 – FORM 10-K SUMMARY 

None 

51 

 
 
 
 
                     
REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM 

To the Stockholders and the Board of Directors of ImmuCell Corporation 

Opinion on the Financial Statements 

We have audited the accompanying balance sheets of ImmuCell Corporation (the “Company”) as of December 31, 2023 

and 2022, and the related statements of operations, stockholders’ equity, and cash flows for each of the two years in the period 
ended December 31, 2023, and the related notes (collectively referred to as the “financial statements”). In our opinion, the 
financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2023 and 
2022, and the results of its operations and its cash flows for each of the two years in the period ended December 31, 2023, in 
conformity with accounting principles generally accepted in the United States of America. 

Basis for Opinion 

These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion 

on the Company’s financial statements based on our audits. We are a public accounting firm registered with the Public Company 
Accounting Oversight Board (United States) (“PCAOB”) and are required to be independent with respect to the Company in 
accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission 
and the PCAOB. 

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform 

the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to 
error or fraud. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial 
reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the 
purpose of expressing an opinion on the effectiveness of the Company’s internal control over financial reporting. Accordingly, we 
express no such opinion. 

Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether 
due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, 
evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting 
principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial 
statements. We believe that our audits provide a reasonable basis for our opinion. 

Critical Audit Matter 

The critical audit matter communicated below is a matter arising from the current period audit of the financial statements 

that was communicated or required to be communicated to the audit committee and that: (1) relates to accounts or disclosures that 
are material to the financial statements and (2) involved our especially challenging, subjective or complex judgments.    The 
communication of the critical audit matter does not alter in any way our opinion on the financial statements, taken as a whole, 
and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on 
the accounts or disclosures to which it relates. 

Valuation of Inventory 

Description of the Matter 

How We Addressed the 
Matter In Our Audit 

At December 31, 2023, the Company’s inventory was $7,811,841. As discussed in Note 2 of the 
financial statements, inventory is recorded at the lower of cost or net realizable value. 

Auditing management’s valuation of inventory is complex and highly judgmental because of the 
estimates and assumptions used by management to determine the cost accounting and because of 
the variability of the cost per dose due to fluctuations in the biological yield achieved. 

The primary procedures we performed to address this critical audit matter included the following.   
We obtained an understanding of the cost accounting developed by management and the related 
assumptions and estimates used. We tested the cost accounting by examining the underlying data 
used by the Company to prepare the cost accounting. We evaluated the effect of the variability of 
the cost per dose on the inventory value by comparing the biological yield to historical results and 
by performing a sensitivity analysis of the potential range in inventory value within a corridor of 
historical results based on minimum and maximum outcomes for the biological yield.   

F-1 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
     
 
 
/s/ WIPFLI LLP 

We have served as the Company’s auditor since 2019. 

Radnor, Pennsylvania 
April 1, 2024 

F-2 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
ImmuCell Corporation 

BALANCE SHEETS 

ASSETS 

CURRENT ASSETS: 

Cash and cash equivalents 
Trade accounts receivable 
Inventory 
Prepaid expenses and other current assets 

Total current assets 

Property, plant and equipment, net 
Operating lease right-of-use asset   
Goodwill 
Intangible assets, net 
Other assets 
TOTAL ASSETS 

LIABILITIES AND STOCKHOLDERS’ EQUITY 

CURRENT LIABILITIES: 

Current portion of debt obligations 
Current portion of operating lease liability 
Accounts payable and accrued expenses 

Total current liabilities 

LONG-TERM LIABILITIES: 

Debt obligations, net of current portion 
Operating lease liability, net of current portion 

Total long-term liabilities 

TOTAL LIABILITIES 

CONTINGENT LIABILITIES AND COMMITMENTS (See Note 11) 

STOCKHOLDERS’ EQUITY: 
      Common stock, $0.10 par value per share, 15,000,000 shares authorized and   
  7,814,165 shares issued as of both December 31, 2023 and 2022 and     
  7,750,864 and 7,746,864 shares outstanding as of December 31, 2023 and 
  2022, respectively 
      Additional paid-in capital 

Accumulated deficit 
Treasury stock, at cost, 63,301 and 67,301 shares as of December 31, 2023 

and 2022, respectively 
Total stockholders’ equity 

TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY 

As of December 31, 

2023 

2022 

$978,741   
            2,185,383   
          7,811,841   
493,885   
11,469,850   

$5,791,562 
            1,758,600 
          6,038,539 
406,055 
13,994,756 

27,575,683  
4,571,149   
95,557   
38,208   
57,655   
$43,808,102   

28,441,726 
2,194,670 
95,557 
57,312 
76,628 
$44,860,649 

$1,428,807   
644,276   
2,124,337   
4,197,420   

$1,039,447 
31,764 
2,000,862 
3,072,073 

10,540,496   
4,077,109   
14,617,605   

9,191,109 
2,217,418 
11,408,527 

18,815,025   

14,480,600 

781,417   
36,357,239   
(12,007,097)   

(138,482)  
24,993,077  
$43,808,102   

781,417 
35,978,364 
(6,232,499) 

(147,233) 
30,380,049 
$44,860,649 

The accompanying notes are an integral part of these financial statements. 

F-3 

 
 
 
 
 
 
 
  
 
  
 
 
 
 
 
 
 
 
   
 
   
 
 
  
 
   
 
 
   
 
 
   
 
  
 
 
  
 
  
 
ImmuCell Corporation 

STATEMENTS OF OPERATIONS 

Product sales 
Costs of goods sold 
Gross margin 

Product development expenses 
Sales and marketing expenses 
Administrative expenses 
      Operating expenses 

NET OPERATING LOSS 

Other expenses, net 

LOSS BEFORE INCOME TAXES 

Income tax expense 

NET LOSS 

Basic weighted average common shares outstanding 
      Basic net loss per share 

Diluted weighted average common shares outstanding 
      Diluted net loss per share 

During the Years Ended December 31, 

2023 
$17,471,669   
13,602,385   
3,869,284   

4,394,852   
3,088,215  
2,134,295   
9,617,362   

2022 
$18,567,962 
10,919,183 
7,648,779 

4,493,872 
3,190,033 
2,263,817 
9,947,722 

(5,748,078)   

(2,298,943) 

21,893  

187,190 

(5,769,971)   

(2,486,133) 

4,627   

7,672 

($5,774,598)   

($2,493,805) 

7,747,686   
($0.75)   

7,747,686   
($0.75)   

7,745,122 
($0.32) 

7,745,122 
($0.32) 

The accompanying notes are an integral part of these financial statements. 

F-4 

 
 
 
 
 
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
 
ImmuCell Corporation 

STATEMENTS OF STOCKHOLDERS’ EQUITY 

Common Stock 

Treasury Stock 

Shares 

Amount 

Additional paid-
in capital 

Accumulated 
Deficit 

Shares 

Amount 

Total 
Stockholders’ 
Equity 

BALANCE, 

December 31, 2021 
Net loss 
Exercise of stock options 

Stock-based compensation 

7,814,165   
—   
—   
—   

BALANCE, 

$781,417    $35,692,388    ($3,738,694)   
(2,493,805) 

— 

— 

— 

— 

19,732 

266,244 

— 

— 

72,301   
— 

(5,000) 

— 

($158,171)     

$32,576,940 

— 

(2,493,805) 

10,938 

— 

30,670 

266,244 

December 31, 2022 

7,814,165 

$781,417 

$35,978,364 

($6,232,499) 

67,301 

($147,233) 

$30,380,049 

Net loss 

Exercise of stock options 

Stock-based compensation   

— 

— 

— 

— 

— 

— 

— 

(5,774,598) 

10,009 

368,866 

— 

— 

— 

(4,000) 

— 

— 

8,751 

— 

(5,774,598) 

18,760 

368,866 

BALANCE, 

December 31, 2023 

7,814,165 

$781,417 

$36,357,239 

($12,007,097) 

63,301 

($138,482) 

$24,993,077 

The accompanying notes are an integral part of these financial statements. 

F-5 

 
 
 
 
   
 
 
    
 
 
 
 
 
 
   
   
   
   
   
   
     
 
 
 
 
 
   
 
 
 
 
   
 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
   
 
 
 
 
 
   
 
 
 
 
 
   
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
   
 
 
ImmuCell Corporation 

STATEMENTS OF CASH FLOWS 

CASH FLOWS FROM OPERATING ACTIVITIES: 

Net loss 
Adjustments to reconcile net loss to net cash used for operating activities: 

During the Years Ended December 31, 

2023 

2022 

($5,774,598) 

($2,493,805) 

Depreciation 
Amortization of intangible assets 
Amortization of debt issuance costs 
Amortization of debt discounts 
Stock-based compensation 
Loss (gain) on disposal of property, plant and equipment 
Non-cash rent expense 

Changes in: 

Trade accounts receivable 
Inventory 
Prepaid expenses and other current assets 
Other assets 
Accounts payable and accrued expenses 

Net cash used for operating activities 

CASH FLOWS FROM INVESTING ACTIVITIES: 

Purchase of property, plant and equipment 
Proceeds from sale of property, plant and equipment 
Net cash used for investing activities 

CASH FLOWS FROM FINANCING ACTIVITIES: 

Proceeds from debt issuance 
Proceeds from line of credit 
Debt principal repayments 
Line of credit repayments 
Payments of debt issuance costs 
Payments of debt discounts 
Proceeds from exercise of stock options 
Net cash provided by financing activities 

2,697,897 
19,104 
13,072 
9,547 
368,866 
8,099 
95,724 

(426,783) 
(1,773,302) 
(87,830) 
18,973 
156,995 
(4,674,236) 

(1,892,513) 
2,474 
(1,890,039) 

3,000,000 
2,000,000 
(1,185,774) 
(2,000,000) 
(35,425) 
(46,107) 
18,760 
1,751,454 

2,468,479 
19,104 
7,658 
— 
266,244 
(7,334) 
28,476 

935,629 
(2,948,565) 
(110,858) 
(50,513) 
341,614 
(1,543,871) 

(3,975,274) 
11,000 
(3,964,274) 

2,000,000 
— 
(897,125) 
— 
(19,306) 
— 
30,670 
1,114,239 

NET DECREASE IN CASH AND CASH  EQUIVALENTS   

(4,812,821) 

(4,393,906) 

BEGINNING CASH AND CASH EQUIVALENTS   

5,791,562 

10,185,468 

ENDING CASH AND CASH EQUIVALENTS 

$978,741 

$5,791,562 

The accompanying notes are an integral part of these financial statements.  

F-6 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
ImmuCell Corporation 
STATEMENT OF CASH FLOWS 

SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION 

CASH PAID FOR: 
Income taxes 
Interest expense 

During the Years Ended December 31, 

2023 

2022 

$6,466 
$444,954 

$4,923 
$338,516 

NON-CASH ACTIVITIES: 
Change in capital expenditures included in accounts payable and accrued 

expenses 

Change in payments of debt discounts included in accounts payable and 

accrued expenses 

Operating lease right-of-use asset and operating lease liability 

$50,086 

($44,998) 

$16,566 
$2,472,203 

$— 
$1,184,727 

The accompanying notes are an integral part of these financial statements. 

F-7 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
ImmuCell Corporation 
Notes to Audited Financial Statements   

1. BUSINESS OPERATIONS 

ImmuCell Corporation (the “Company”, “we”, “us”, “our”) was originally incorporated in Maine in 1982 and reincorporated in 
Delaware in 1987, in conjunction with an initial public offering of common stock. We are an animal health company whose purpose is 
to create scientifically proven and practical products that improve the health and productivity of dairy and beef cattle. As disclosed in 
Note 17, “Segment Information”, one of our business segments is dedicated to Scours and the other is focused on Mastitis. We 
manufacture and market the First Defense® product line, providing Immediate Immunity™ to prevent scours in newborn dairy and 
beef calves. We have expanded this line into four different products with formulations targeting E. coli, coronavirus and rotavirus 
pathogens. We are also in the late stages of developing Re-Tain®, a treatment for lactating dairy cows with subclinical mastitis. 
Mastitis is the most significant cause of economic loss to the dairy industry. These products help reduce the need to use traditional 
antibiotics in food producing animals. We are subject to certain risks including dependence on key individuals and third-party 
providers of critical goods and services, competition from other larger companies, the successful sale of existing products and the 
development of new viable products with appropriate regulatory approvals, where applicable. A combination of the conditions, trends 
and concerns related to or arising from inflation, rising interest rates and potential recessionary conditions in the United States and/or 
internationally, could have a corresponding negative effect on our business and operations. We are experiencing price increases in key 
components, supportive services, transportation and other supplies that are causing our costs of goods sold to increase. We have 
experienced some contamination events in our production process. We implemented a production slowdown to remediate this 
problem, which led to the recognition of lower sales and gross margin during the first ten months of 2023.   

2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES 

(a) Basis of Presentation 

We have prepared the accompanying audited financial statements reflecting all adjustments (which are of a normal recurring 
nature) that are, in our opinion, necessary in order to ensure that the financial statements are not misleading. We follow accounting 
standards set by the Financial Accounting Standards Board (FASB). The FASB sets Generally Accepted Accounting Principles 
(GAAP) that we follow to ensure we accurately report our financial condition, results of operations, earnings per share and cash flows. 
References to GAAP in these footnotes are to the FASB Accounting Standards Codification™ (Codification). We believe that the 
disclosures are adequate to ensure that the information presented is not misleading.   

(b) Cash and Cash Equivalents   

We consider all highly liquid investment instruments that mature within three months of their purchase dates to be cash 
equivalents. Cash equivalents are principally invested in securities backed by the U.S. government. We hold no cash or cash 
equivalents in excess of Federal Deposit Insurance Corporation (FDIC) limits of $250,000 per financial institution per depositor. See 
Note 3. 

(c) Trade Accounts Receivable 

Accounts receivable are carried at the original invoice amount less an estimate made for doubtful collection when applicable. 

Management determines the allowance for doubtful accounts on a monthly basis by identifying troubled accounts and by using 
historical experience applied to an aging of accounts and other relevant factors. Accounts receivable are considered to be past due if 
a portion of the receivable balance is outstanding for more than 30 days. Past due accounts receivable are subject to an interest 
charge. It was not necessary to charge interest on past due accounts during the years ended December 31, 2023 or 2022 because the 
time past due was not significant. There was no accrual for such interest charges as of December 31, 2023 or 2022. Accounts 
receivable are written off when deemed uncollectible. No accounts receivable were written off during the years ended December 31, 
2023 or 2022. Recoveries of accounts receivable previously written off are recorded as income when received. No such recoveries 
were recorded during the years ended December 31, 2023 or 2022. As of December 31, 2023 and 2022, we determined that no 
allowance for doubtful accounts was necessary. See Note 4.   

(d) Inventory 

Inventory includes raw materials, work-in-process and finished goods and is recorded at the lower of cost, on the first-in, first-

out method, or net realizable value (determined as the estimated selling price in the normal course of business, less reasonably 

F-8 

 
 
ImmuCell Corporation 
Notes to Audited Financial Statements (continued) 

predictable costs of completion, disposal and transportation). Work-in-process and finished goods inventories include materials, labor 
and manufacturing overhead. At each balance sheet date, we evaluate our ending inventories for excess quantities and obsolescence. 
Inventories that we consider excess or obsolete are written down to estimated net realizable value. Once inventory is written down and 
a new cost basis is established, it is not written back up. We believe that supplies and raw materials for the production of our products 
are available from more than one vendor or farm. Our policy is to maintain more than one source of supply for the components used in 
our products when feasible. See Note 5. 

  (e) Property, Plant and Equipment, net 

We depreciate property, plant and equipment on the straight-line method by charges to operations and costs of goods sold in 

amounts estimated to expense the cost of the assets from the date they are first put into service to the end of the estimated useful lives 
of the assets. The facility we have constructed at 33 Caddie Lane to produce the Nisin Drug Substance (DS) for Re-Tain® is being 
depreciated over 39 years from when a Certificate of Occupancy was issued during the fourth quarter of 2017. We began depreciating 
the equipment for our Nisin DS facility when it was placed in service during the third quarter of 2018. Approximately 87% of these 
assets are being depreciated over 10 years. We began depreciating the leasehold improvements to our new First Defense® production 
facility at 175 Industrial Way (Building 175A) over the remainder of the 10-year lease term beginning when a Certificate of 
Occupancy was issued during the second quarter of 2020. During August of 2022, this lease term was extended to January of 2043 in 
connection with a new lease covering additional space at 175 Industrial Way (Building 175B). As a result, the net book value of these 
leasehold improvements as of August 31, 2022 is now being depreciated over the remainder of the extended lease term. Significant 
repairs to property, plant and equipment that benefit more than a current period are capitalized and depreciated over their useful lives. 
Insignificant repairs are expensed when incurred. See Notes 2(h) and 7 for additional disclosures. 

(f) Operating Leases 

            We account for our real estate leases using a right-of-use model, which recognizes that at the date of commencement, a lessee 
has a financial obligation to make lease payments to the lessor for the right to use the underlying asset during the lease term and 
recognizes a corresponding right-of-use (ROU) asset related to this right. ROU assets and lease liabilities are recognized at the lease 
commencement date based on the present value of the future lease payments over the expected lease term. The ROU asset is also 
adjusted for any lease prepayments made, lease incentives received and initial direct costs incurred. For operating leases with lease 
payments that fluctuate over the lease term, the total lease costs are recognized on a straight-line basis over the lease term. Our leases, 
at times, may include options to extend the term of the lease. When it is reasonably certain that we will exercise the option, we include 
the impact of the option in the lease term for purposes of determining future lease payments. For all underlying classes of assets, we 
made an accounting policy election to not recognize assets or liabilities for leases with a term of twelve months or less and to account 
for all components in a lease arrangement as a single combined lease component. Short-term lease payments are recognized on a 
straight-line basis. Certain of our lease agreements include variable rent payments, consisting primarily of amounts paid to the lessor 
based on cost or consumption, such as maintenance and real estate taxes. These costs are recognized in the period in which the 
obligation is incurred. Because our leases do not specify an implicit rate, we use an incremental borrowing rate based on information 
available at the lease commencement date to determine the present value of the lease payments. We evaluate our ROU asset for 
impairment when events or changes in circumstances indicate that the carrying value of the asset may not be recoverable. See Notes 
2(h) and 12 for additional disclosures.   

(g) Intangible Assets and Goodwill 

We amortize intangible assets on the straight-line method by charges to costs of goods sold in amounts estimated to expense the 

cost of the assets from the date they are first put into service to the end of the estimated useful lives of the assets. We have recorded 
intangible assets related to customer relationships, non-compete agreements and developed technology, each with defined useful lives. 
Amounts paid in excess of fair value of the net assets (including tax attributes) are recorded as goodwill under the acquisition method 
of accounting. We assess the impairment of intangible assets that have indefinite lives (when applicable) and goodwill (at the 
reporting unit level) on an annual basis (as of December 31st) and whenever events or changes in circumstances indicate that the 
carrying value of the asset may not be recoverable. We would record an impairment charge if such an assessment were to indicate that 
the fair value of such assets was less than the carrying value. Judgment is required in determining whether an event has occurred that 
may impair the value of goodwill or identifiable intangible assets. Factors that could indicate that an impairment may exist include 
significant under-performance relative to plan or long-term projections, significant changes in business strategy and significant 
negative industry or economic trends. Although we believe intangible assets and goodwill are properly stated in the accompanying 
financial statements, changes in strategy or market conditions could significantly impact these judgments and require an adjustment to 

F-9 

 
ImmuCell Corporation 
Notes to Audited Financial Statements (continued) 

the recorded balance in the future. No goodwill impairments were recorded during the years ended December 31, 2023 or 2022. See 
Notes 2(h) and 8 for additional disclosures. 

(h) Valuation of Long-Lived Assets 

We periodically evaluate our long-lived assets, consisting principally of property, plant and equipment, operating lease right-of-

use asset and amortizable intangible assets, for potential impairment. In accordance with the applicable accounting guidance for the 
treatment of long-lived assets, we review the carrying value of our long-lived assets or asset group that is held and used, including 
intangible assets subject to amortization, for impairment whenever events and circumstances indicate that the carrying value of the 
assets may not be recoverable. Under the held for use approach, the asset or asset group to be tested for impairment should represent 
the lowest level for which identifiable cash flows are largely independent of the cash flows of other groups of assets and liabilities. No 
impairment was recognized during the years ended December 31, 2023 or 2022. 

(i) Fair Value Measurements 

In determining fair value measurements, we follow the provisions of Codification Topic 820, Fair Value Measurements and 

Disclosures. Codification Topic 820 defines fair value, establishes a framework for measuring fair value under GAAP and enhances 
disclosures about fair value measurements. The topic provides a consistent definition of fair value which focuses on an exit price, 
which is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market 
participants at the measurement date. The topic also prioritizes, within the measurement of fair value, the use of market-based 
information over entity-specific information and establishes a three-level hierarchy for fair value measurements based on the nature of 
inputs used in the valuation of an asset or liability as of the measurement date. As of December 31, 2023 and 2022, the carrying 
amounts of cash and cash equivalents, accounts receivable, inventory, prepaid expenses and other current assets, accounts payable and 
accrued expenses approximate fair value because of their short-term nature. The amount outstanding under our bank debt facilities is 
measured at carrying value in our accompanying balance sheets. Our bank debt facilities are valued using Level 2 inputs. The three-
level hierarchy is as follows: 

Level 1 — Pricing inputs are quoted prices available in active markets for identical assets or liabilities as of the measurement   

date. 

Level 2 — Pricing inputs are quoted prices for similar assets or liabilities, or inputs that are observable, either directly or 

indirectly, for substantially the full term through corroboration with observable market data. 

Level 3 — Pricing inputs are unobservable for the assets or liabilities, that is, inputs that reflect the reporting entity’s own 
assumptions about the assumptions market participants would use in pricing the asset or liability. 

In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, the 

level of an asset or liability within the fair value hierarchy is based on the lowest level of input that is significant to the fair value 
measurement. Our assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment 
and considers factors specific to the investment. We also hold money market accounts in our bank account, which are classified as 
cash equivalents and measured at fair value. The fair value of these investments is based on their closing published net asset value. 

We assess the levels of the investments at each measurement date, and transfers between levels are recognized on the actual date 
of the event or change in circumstances that caused the transfer in accordance with our accounting policy regarding the recognition of 
transfers between levels of the fair value hierarchy. During the years ended December 31, 2023 and 2022, there were no transfers 
between levels. As of December 31, 2023 and 2022, our Level 1 assets measured at fair value by quoted prices in active markets 
consisted of cash and money market accounts. There were no assets or liabilities measured at fair value on a nonrecurring basis as of 
December 31, 2023 or 2022. The carrying values of our cash and money market accounts as of December 31, 2023 or 2022 
approximated their fair market values. Due to inflation and the changing interest rate environment, the carrying values of our fixed 
rate bank debt as of December 31, 2023 and 2022 differed from their fair market values. These values are reflected in the following 
tables: 

F-10 

 
 
 
 
 
ImmuCell Corporation 
Notes to Audited Financial Statements (continued) 

As of December 31, 2023 

Level 1 

Level 2 

Level 3 

Total 

Assets: 

Cash and money market accounts 

$978,741   

$—   

$—   

$978,741 

Liabilities: 
          Bank debt 

Assets: 

$—  

$10,431,817  

$—  

$10,431,817 

As of December 31, 2022 

Level 1 

Level 2 

Level 3 

Total 

Cash and money market accounts 

$5,791,562   

$—   

$—   

$5,791,562 

Liabilities: 

Bank debt 

(j) Concentration of Risk 

$—   

$8,897,197   

$—   

$8,897,197 

Concentration of credit risk with respect to accounts receivable is principally limited to certain customers to whom we make 
substantial sales. To reduce risk, we routinely assess the financial strength of our customers and, as a consequence, believe that our 
accounts receivable credit risk exposure is limited. We maintain an allowance for potential credit losses when deemed necessary, but 
historically we have not experienced significant credit losses related to an individual customer or groups of customers in any particular 
industry or geographic area. Sales to significant customers that amounted to 10% or more of total product sales are detailed in the 
following table: 

Company A 
Company B 

During the Years   
Ended December 31, 

2023 
47% 
32% 

2022 
40% 
33% 

Trade accounts receivable due from significant customers that amounted to 10% or more of our total trade accounts receivable 

are detailed in the following table: 

Company A 
Company B 
Company C 

* This amount is less than 10%. 

(k) Revenue Recognition 

As of   
December 31, 2023 
43% 
36% 
* 

As of   
December 31, 2022 
41% 
28% 
12% 

We recognize revenue in accordance with Codification Topic 606, Revenue from Contracts with Customers (ASC 606). ASC 
606 is a single comprehensive model for companies to use in accounting for revenue arising from contracts with customers. The core 
principle is that we recognize the amount of revenue to which we expect to be entitled for the transfer of promised goods or services to 
customers when a customer obtains control of promised goods or services in an amount that reflects the consideration we expect to receive in 
exchange for those goods or services. In addition, the standard requires disclosure of the nature, amount, timing and uncertainty of revenue 
and cash flows arising from contracts with customers. We conduct our business with customers through valid purchase orders or sales orders 
which are considered contracts and are not interdependent on one another. A performance obligation is a promise in a contract to transfer a 
distinct product to the customer. The transaction price is the amount of consideration we expect to receive under the arrangement. Revenue is 
measured based on consideration specified in a contract with a customer. The transaction price of a contract is allocated to each distinct 

F-11 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
 
  
  
  
 
  
  
  
 
 
 
 
 
 
 
 
   
   
   
 
   
   
   
 
   
   
   
 
ImmuCell Corporation 
Notes to Audited Financial Statements (continued) 

performance obligation and recognized when or as the customer receives the benefit of the performance obligation. Product transaction prices on 
a purchase or sales order are discrete and stand-alone. We recognize revenue when we satisfy a performance obligation in a contract by 
transferring control over a product to a customer when product ships to a customer. Amounts due are typically paid approximately 30 days from 
the time control is transferred. Shipping and handling costs associated with outbound freight are accounted for as a fulfillment cost in costs of 
goods sold. We do not bill for or collect sales tax because our sales are generally made to distributors and thus our sales to them are not 
subject to sales tax. We generally have experienced an immaterial amount of product returns. See Note 14 for additional disclosures. 

(l) Expense Recognition   

We do not incur costs in connection with product sales to customers that are eligible for capitalization. Advertising costs are expensed 

when incurred, which is generally during the month in which the advertisement is published. All product development expenses are 
expensed as incurred, as are all related patent costs. We capitalize costs to produce inventory during the production cycle, and these 
costs are charged to costs of goods sold when the inventory is sold to a customer or is deemed to be in excess or obsolete.   

(m) Income Taxes 

We account for income taxes in accordance with Codification Topic 740, Income Taxes, which requires that we recognize a 
current tax liability or asset for current taxes payable or refundable and a deferred tax liability or asset for the estimated future tax 
effects of temporary differences and carryforwards to the extent they are realizable. We consider future taxable income and feasible 
tax planning strategies in assessing the need for a valuation allowance against our deferred tax assets at the end of each quarter. If we 
determine that it is more likely than not that we will realize our deferred tax assets in the future in excess of the net recorded amount 
over a reasonably short period of time, a reduction of the valuation allowance would increase income in the period such determination 
was made. Likewise, if we determine that it is more likely than not that we will not realize all or part of our net deferred tax asset in 
the future, an increase to the valuation allowance would be charged to income in the period such determination was made. 

Codification Topic 740-10 clarifies the accounting for income taxes by prescribing a minimum recognition threshold that a tax 
position must meet before being recognized in the financial statements. In the ordinary course of business, there are transactions and 
calculations where the ultimate tax outcome is uncertain. In addition, we are subject to periodic audits and examinations by the 
Internal Revenue Service and other taxing authorities. With few exceptions, we are no longer subject to income tax examinations by 
tax authorities for years before 2020. We have evaluated the positions taken on our filed tax returns and have concluded that no 
uncertain tax positions existed as of December 31, 2023 or 2022. Although we believe that our estimates are reasonable, actual results 
could differ from these estimates. See Note 16. 

(n) Stock-Based Compensation   

We account for stock-based compensation in accordance with Codification Topic 718, Compensation-Stock Compensation, 
which generally requires us to recognize non-cash compensation expense for stock-based payments using the fair-value-based method. 
The fair value of each stock option grant has been estimated on the date of grant using the Black-Scholes option pricing model. 
Accordingly, we recorded compensation expense pertaining to stock-based compensation of $368,866 and $266,244 during the years 
ended December 31, 2023 and 2022, respectively. See Note 13. 

(o) Net Loss Per Common Share 

Net loss per common share has been computed in accordance with Codification Topic 260-10, Earnings Per Share. The net loss 

per share has been computed by dividing the net loss by the weighted average number of common shares outstanding during the 
period. All stock options have been excluded from the denominator in the calculation of dilutive earnings per share when we are in a 
loss position because their inclusion would be anti-dilutive. Outstanding stock options that were not included in this calculation 
because the effect would be anti-dilutive amounted to 618,500 and 605,000 during the years ended December 31, 2023 and 2022, 
respectively. 

F-12 

 
 
 
 
 
ImmuCell Corporation 
Notes to Audited Financial Statements (continued) 

During the Years   
Ended December 31,   

2023 

($5,774,598)   

2022 
($2,493,805)   

Net loss attributable to stockholders 

Weighted average common shares outstanding - Basic 
Dilutive impact of share-based compensation awards 
Weighted average common shares outstanding - Diluted 

7,747,686   
—   
7,747,686   

7,745,122   
—   
7,745,122   

Net loss per share: 

Basic 
Diluted 

(p) Use of Estimates 

($0.75)   
($0.75)   

($0.32)   
($0.32)   

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that 

affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial 
statements and the reported amounts of revenues and expenses during the period. Although we regularly assess these estimates, actual 
amounts could differ from those estimates and are subject to change in the near term. Changes in estimates are recorded during the 
period in which they become known. Significant estimates include our valuation of inventory, long-lived assets, deferred tax assets 
and costs of goods sold. 

(q) New Accounting Pronouncement Adopted 

In June 2016, the FASB issued ASU 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses 

on Financial Instruments, which was effective for us as of January 1, 2023, using the modified retrospective transition method. This 
ASU amends the impairment model to utilize an expected loss methodology in place of the incurred loss methodology for financial 
instruments, including trade receivables. The amendment requires entities to consider a broader range of information to estimate 
expected credit losses, which may result in earlier recognition of losses. Historically, we have experienced a very low level of bad debt 
expense, and most of our trade receivables are collected by the due date or within a few days of the due date. Because of this 
experience, the adoption of ASU 2016-13 did not have a material impact on our financial statements.   

(r) New Accounting Pronouncements Not Yet Adopted 

In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment 
Disclosures, which is intended to improve reportable segment disclosure requirements, primarily through enhanced disclosures about 
significant expenses. The amendments will require disclosure of significant segment expenses that are regularly provided to our chief 
operating decision-maker and included within segment profit and loss. The amendments are effective for annual periods beginning after 
December 15, 2023, and interim periods beginning after December 15, 2024, with early adoption permitted, and will be applied 
retrospectively to all prior periods presented in the financial statements. We are currently evaluating ASU 2023-07 to determine its 
impact on our financial statements. 

In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures, which 
includes amendments that further enhance income tax disclosures, primarily through standardization and disaggregation of income tax 
rate reconciliation categories and income taxes paid by jurisdiction. The amendments are effective for annual periods beginning after 
December 15, 2024, with early adoption permitted, and may be applied either prospectively or retrospectively. We are currently 
evaluating ASU 2023-09 to determine its impact on our financial statements. 

3. CASH AND CASH EQUIVALENTS   

Cash and cash equivalents amounted to $978,741 and $5,791,562 as of December 31, 2023 and 2022, respectively. 

4. TRADE ACCOUNTS RECEIVABLE 

Trade accounts receivable amounted to $2,185,383 and $1,758,600 as of December 31, 2023 and 2022, respectively. No 

allowance for bad debt or product returns was recorded as of December 31, 2023 or 2022. We anticipate no future events or conditions 
that would impact our ability to collect our accounts receivable. Because of the generally short duration from the balance sheet date to 

F-13 

 
 
 
 
 
 
 
   
   
 
   
   
   
   
ImmuCell Corporation 
Notes to Audited Financial Statements (continued) 

the date of collection, our collection rate is not expected to be significantly impacted by events occurring after the balance sheet date. 
The trade accounts receivable balances included $42,507 and $46,426 due from a related party as of December 31, 2023 or 2022, 
respectively. See Note 18. 

5. INVENTORY 

Inventory consisted of the following: 

Raw materials 
Work-in-process 
Finished goods 

Total 

As of   
December 31, 2023 

As of   
December 31, 2022 
$2,419,982 
3,468,702 
149,855 
$6,038,539 

$1,594,028   
5,815,194   
402,619   
$7,811,841   

These inventory figures are net of a $527,133 and $589,204 write-off of scrapped inventory during the years ended December 

31, 2023 and 2022, respectively, that resulted principally from contamination events and other production process losses. 

6. PREPAID EXPENSES AND OTHER CURRENT ASSETS 

Prepaid expenses and other current assets consisted of the following: 

Prepaid expenses 
Other receivables 

Total  

7. PROPERTY, PLANT AND EQUIPMENT, net 

Property, plant and equipment consisted of the following: 

Laboratory and manufacturing equipment 
Buildings and improvements 
Office furniture and equipment 
Construction in progress 
Land 

Property, plant and equipment, gross 

Accumulated depreciation 

Property, plant and equipment, net 

Estimated Useful 
Lives   
(in years) 
3-10 
10-39 
3-10 
n/a 
n/a 

As of   
December 31, 2023 

As of   
December 31, 2022 
$363,877 
42,178 
$406,055 

$454,152   
39,733   
$493,885   

As of   
December 31, 2023 

As of   
December 31, 2022 
$19,181,960 
20,050,167 
900,306 
3,668,046 
516,867 
44,317,346 
(15,875,620) 
$28,441,726 

$20,953,601   
20,784,565   
1,036,374   
2,768,224   
516,867   
46,059,631   
(18,483,948)   
$27,575,683   

As of December 31, 2023 and 2022, construction in progress consisted principally of payments toward the First Defense® 
production capacity expansion project and equipment needed to bring the formulation and aseptic filling for Re-Tain® in-house. 
Property, plant and equipment disposals were $100,142 and $127,127 during the years ended December 31, 2023 and 2022, 
respectively. Depreciation expense was $2,697,897 and $2,468,479 during the years ended December 31, 2023 and 2022, respectively.   

8. INTANGIBLE ASSETS 

Intangible assets of $191,040 were valued using the relief from royalty method and are being amortized to costs of goods sold 

over their useful lives, which are estimated to be 10 years. Intangible amortization expense was $19,104 during both of the years 
ended December 31, 2023 and 2022. The net value of these intangibles was $38,208 and $57,312 as of December 31, 2023 and 
December 31, 2022, respectively. Intangible asset amortization expense is estimated to be $19,104 per year through December 31, 
2025.   

F-14 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
ImmuCell Corporation 
Notes to Audited Financial Statements (continued) 

Intangible assets as of December 31, 2023 consisted of the following: 

Developed technology 
Customer relationships 
Non-compete agreements 

Total 

Gross Carrying 
Value 

  Accumulated 
Amortization 

Net Book   
Value 

$184,100   
1,300   
5,640   
$191,040   

($147,280)   
(1,040)   
(4,512)   
($152,832)   

$36,820 
260 
1,128 

$38,208 

Intangible assets as of December 31, 2022 consisted of the following: 

Developed technology 
Customer relationships 
Non-compete agreements 

Total 

Gross Carrying 
Value 

  Accumulated 
Amortization 

Net Book   
Value 

$184,100   
1,300   
5,640   
$191,040   

($128,870)   
(910)   
(3,948)   
($133,728)   

$55,230 
390 
1,692 
$57,312 

9. ACCOUNTS PAYABLE AND ACCRUED EXPENSES 

Accounts payable and accrued expenses consisted of the following: 

As of   
December 31, 2023 

As of   
December 31, 2022 
$726,736 
63,261 
966,553 
95,550 
143,872 
4,890 
$2,000,862 

$874,558   
13,175   
942,999   
97,800   
192,754   
3,051   
$2,124,337   

Accounts payable – trade 
Accounts payable – capital 
Accrued payroll 
Accrued professional fees 
Accrued other 
Income tax payable 

Total 

10. BANK DEBT 

Loans #1 and #2: During the first quarter of 2020, we closed on a debt financing with Gorham Savings Bank (GSB) 

aggregating $8,600,000, which was comprised of a $5,100,000 mortgage note (Loan #1) that bears interest at a fixed rate of 3.50% per 
annum (with a 10-year term and 25-year amortization schedule and a balloon principal payment of $3,145,888 due during the first 
quarter of 2030) and a $3,500,000 note (Loan #2) that bears interest at a fixed rate of 3.50% per annum (with a 7-year term and 
amortization schedule). The proceeds from the 2020 debt refinancing were used to repay all bank debt outstanding at the time of 
closing and to provide some additional working capital. During the first quarter of 2022, we closed on an additional $2,000,000 in 
mortgage debt, which bears interest at the fixed rate of 3.58% per annum. This was accomplished through an amendment of the 
original mortgage note (Loan #1) that increased the then outstanding principal balance from $4,233,957 to $6,233,957 bearing interest 
at the blended fixed rate of 3.53% per annum. This increased the balloon payment from $3,145,888 to $3,687,479 and extended the 
due date of the balloon payment from the first quarter of 2030 to the first quarter of 2032.   

Line of Credit (LOC): Also during the first quarter of 2020, GSB extended a $1,000,000 LOC to us that is available, as needed, 

through September 11, 2025. Interest on borrowings against the LOC is variable at the National Prime Rate per annum. There was no 
outstanding balance under this LOC as of December 31, 2023 or 2022.   

Loan #3: During the second quarter of 2020, we received a loan from the Maine Technology Institute (MTI) in the aggregate 

principal amount of $500,000. The first 2.25 years of this loan were interest-free with no interest accrual or required principal 
payments. Beginning during the fourth quarter of 2022, Loan #3 became subject to quarterly principal and interest payments at a fixed 
rate of 5% per annum over the final five years of the loan, through the third quarter of 2027 if not repaid before then.   

Loan #4: During the fourth quarter of 2020, we closed on a $1,500,000 note with GSB that bears interest at a fixed rate of 

3.50% per annum (with a 7-year term and amortization schedule). Proceeds of $624,167 were used to prepay a portion of the 
outstanding principal on our mortgage note (Loan #1), which reduced the outstanding balance to 80% of the most recent appraised 

F-15 

 
             
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
ImmuCell Corporation 
Notes to Audited Financial Statements (continued) 

value of the property securing the debt, which allowed GSB to release the $1,400,000 that had been held in escrow. The remaining 
proceeds were available for general working capital purposes.   

Loan #5: On June 30, 2021, we executed definitive agreements covering a second loan from the MTI in the aggregate principal 

amount of $400,000, proceeds from which were received in July 2021. The first two years of this loan were interest-free with no 
interest accrual or required principal payments. Principal and interest payments at a fixed rate of 5% per annum are due quarterly over 
the final 5.5 years of the loan, beginning during the third quarter of 2023 and continuing through the fourth quarter of 2028 if not 
repaid before then.   

Loan #6: During the third quarter of 2023, we closed on a $2,000,000 term loan bearing interest at a fixed rate of 7% per annum 
from GSB. The Finance Authority of Maine (FAME) provided $1,000,000 of loan insurance to GSB. This loan is repayable under a 7-
year amortization schedule with a balloon payment of $1,285,072 due during the third quarter of 2026. 

Loan #7: Also during the third quarter of 2023, we closed on a $1,000,000 term loan bearing interest at a fixed rate of 8% per 
annum from FAME. The loan is repayable under a 7-year amortization schedule with a balloon payment of $649,235 due during the 
third quarter of 2026. 

Loans #1, #2, #4, #6 and #7 are secured by liens on substantially all of our assets and are subject to certain restrictions and 
financial covenants. Loan #7 is subordinated to Loans #1, #2, #4 and #6. Reflecting our poor financial performance during 2023, the 
debt covenant requirements for the twelve-month periods ended December 31, 2023 and June 30, 2024 were waived pre-emptively by 
our bank. We are required to meet a minimum debt service coverage (DSC) ratio of 1.35 for the twelve-month period ending 
September 30, 2024 and then annually after that beginning with the year ending December 31, 2024. In connection with these credit 
facilities, we incurred aggregate debt issuance and debt discount costs of $168,268 ($98,098 and $19,306 of which were incurred 
during the years ended December 31, 2023 and 2022, respectively). The amortization of these debt issuance and debt discount costs is 
being recorded as a component of interest expense, included in other expenses, net, and is being amortized on a straight-line basis over 
the underlying terms of the notes. Loans #3 and #5 are unsecured and subordinated to our indebtedness to GSB and FAME. Failure to 
make timely payments of principal and interest, or otherwise to comply with the terms of the agreements of Loans #3 and #5, would 
entitle the MTI to accelerate the maturity of such debt and demand repayment in full. These loans may be prepaid without penalty at 
any time. 

Debt proceeds received and principal repayments made (excluding our $1,000,000 line of credit) during the years ended 

December 31, 2023 and 2022 are reflected in the following table by period and by loan: 

Loan #1 
Loan #2 
Loan #3 
Loan #4 
Loan #5 
Loan #6 
Loan #7 
Total 

During the Year   
Ended December 31, 2023 

During the Year   
Ended December 31, 2022 

Proceeds from 
Debt Issuance 

  Debt Principal 
Repayments 

Proceeds from   
Debt Issuance 

  Debt Principal 
Repayments 

$—   
—   
—   
—   
—   
2,000,000   
1,000,000   
$3,000,000   

$223,222   
494,455   
91,446   
205,884   
32,017   
93,054   
45,696   
$1,185,774   

$2,000,000   
—   
—   
—   
—   
—   
—   
$2,000,000   

$199,013 
477,237 
22,160 
198,715 
— 
— 
— 
$897,125 

F-16 

 
 
 
 
 
 
 
 
ImmuCell Corporation 
Notes to Audited Financial Statements (continued) 

Principal payments (net of debt issuance and debt discount costs) due under bank loans outstanding as of December 31, 2023 

(excluding our $1,000,000 line of credit) are reflected in the following table by the year that payments are due: 

Loan #1 
Loan #2 
Loan #3 
Loan #4 
Loan #5 
Loan #6 
Loan #7 
Subtotal 
Debt issuance cost 
Debt discount cost 
Total 

During the Years Ending December 31, 
2025 
$239,876   
530,738   
101,001   
220,994   
69,856   
253,003   
124,364   
1,539,832   
(18,976)   
(20,891)   
     $1,428,807    $1,499,965   

2026 
$248,604   
549,881   
106,146   
228,965   
73,415   
1,418,574   
715,308   
3,340,893   
(13,579)   
(11,344)   
$3,315,970   

2024 
$230,879   
512,103  
96,104   
213,217   
66,470   
235,369   
114,632   
1,468,774   
(19,076)   
(20,891)   

2027 
$257,649   
140,458   
83,143   
240,452   
77,156   
—   
—   
798,858   
(5,420)   
—   
$793,438   

  Thereafter 

2028 
$266,537   
—   
—   
—   
81,086   
—   
—   
347,623   
(3,513)   
—   
$344,110   

$4,598,360     
—     
—     
—     
—     
—     
—     
4,598,360     
(11,347)     
—     
$4,587,013     

Total 
$5,841,905 
1,733,180 
386,394 
903,628 
367,983 
1,906,946 
954,304 
12,094,340 
(71,911) 
(53,126) 
$11,969,303 

11. CONTINGENT LIABILITIES AND COMMITMENTS 

Our bylaws, as amended, in effect provide that the Company will indemnify its officers and directors against any liability arising 

from their responsibilities as officers and directors to the maximum extent permitted by Delaware law. In addition, we make similar 
indemnity undertakings with each director through a separate indemnification agreement with that director. The maximum payment 
that we may be required to make under such provisions is theoretically unlimited and is impossible to determine. We maintain 
directors’ and officers’ liability insurance, which may provide reimbursement to the Company for payments made to, or on behalf of, 
officers and directors pursuant to the indemnification provisions. Our indemnification obligations were grandfathered under the 
provisions of Codification Topic 460, Guarantees. Accordingly, we have recorded no liability for such obligations as of December 31, 
2023 or 2022. Since our incorporation, we have had no occasion to make any indemnification payment to any of our officers or 
directors for any reason. 

The development, manufacturing and marketing of animal health care products entails an inherent risk that liability claims will 

be asserted against us during the normal course of business. We are aware of no such claims against us as of the date of this filing. We 
believe that we have reasonable levels of liability insurance to support our operations. 

We enter into agreements with third parties in the ordinary course of business under which we are obligated to indemnify such 

third parties from and against various risks and losses. The precise terms of such indemnities vary with the nature of the agreement. In 
many cases, we limit the maximum amount of our indemnification obligations, but in some cases those obligations may be 
theoretically unlimited. We have not incurred material expenses in discharging any of these indemnification obligations and based on 
our analysis of the nature of the risks involved, we believe that the fair value of the liabilities potentially arising under these 
agreements is minimal. Accordingly, we recorded no liabilities for such obligations as of December 31, 2023 or 2022. 

We plan to purchase certain key parts (syringes) and services (formulation, aseptic filling and final packaging) pertaining to Re-
Tain® Drug Product (DP), our Nisin-based intramammary treatment of subclinical mastitis in lactating dairy cows, exclusively from 
contractors. The contract for formulation, aseptic filling and final packaging of DP is scheduled to terminate after the supply of 
product for our initial controlled market launch. We initiated an investment in the necessary equipment to perform the DP formulation 
and aseptic filling services in-house, but this investment has been paused at the present time. 

We enter into compensation agreements (which are publicly filed) with our three executive officers. Effective March 28, 2022, 

we entered into an Amended and Restated Separation and Deferred Compensation Agreement (the “Deferred Compensation 
Agreement”) with Mr. Brigham (our President and CEO) that superseded and replaced in its entirety a March 2020 severance 
agreement between the Company and Mr. Brigham. Upon separation from the Company for any reason, Mr. Brigham’s Deferred 
Compensation Agreement allows Mr. Brigham to be paid, among other amounts, all earned and unused paid time off (which expense 
totaling $222,379 was accrued during the first quarter of 2022 and $230,162 and $222,379 was included in accounts payable and 
accrued expenses on the accompanying balance sheets as of December 31, 2023 and 2022, respectively) and to receive up to an 
additional $300,000 in deferred compensation (which amount is being accrued over the three-year period ending in January 2025). 

F-17 

 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
 
 
 
   
    
    
    
    
    
    
    
    
    
    
ImmuCell Corporation 
Notes to Audited Financial Statements (continued) 

This deferred compensation payment vested as to $100,000 on January 1, 2023 and an additional $100,000 on January 1, 2024. An 
additional $100,00 will vest on January 1, 2025, provided that Mr. Brigham is employed by the Company as of January 2025. The 
vested amounts would be paid upon the earlier of January 31, 2025 or within thirty (30) days following his separation from the 
Company. As of December 31, 2023 and 2022, $200,000 and $100,000, respectively, was included in accounts payable and accrued 
expenses on the accompanying balance sheets. In addition, upon termination of Mr. Brigham’s employment (a) by the Company other 
than for cause, (b) due to death or disability or (c) by Mr. Brigham for good reason, in each case as described and defined in the 
Deferred Compensation Agreement, the Company agrees to pay Mr. Brigham 100% of his then current annual base salary and a lump 
sum payment equal to the employer portion of the costs of continued health benefits for Mr. Brigham and his covered dependents for a 
twelve-month period following termination, and certain equity incentive awards granted to Mr. Brigham would continue to vest 
following such termination in accordance with the terms of the Deferred Compensation Agreement. Incentive Compensation 
Agreements with Mr. Brigham, Ms. Brockmann (our Vice President of Sales and Marketing) and Ms. Williams (our Vice President of 
Manufacturing Operations) allow these executives to earn incentive compensation if certain regulatory and financial objectives are 
met during the year to which the agreement relates, as specified in their agreements. Amounts related to these incentive compensation 
agreements are accrued over the period they are earned (when it is probable that the amounts will be earned) based on our best 
estimate of the amounts expected to be earned. 

In addition to the commitments discussed above, we had committed $41,000 to increase our production capacity for the First 

Defense® product line, $2,345,000 to the purchase of inventory, $7,000 related to the commercial manufacture of Re-Tain® and 
$307,000 to other obligations as of December 31, 2023. 

12. OPERATING LEASES 

On September 12, 2019, we entered into a lease covering approximately 14,300 square feet of office and warehouse space with a 
possession date of November 15, 2019 and a commencement date of February 13, 2020. The property is located at 175 Industrial Way 
in Portland (Building 175A), which is a short distance from our headquarters and manufacturing facility at 56 Evergreen Drive. We 
renovated this space to meet our needs in expanding our production capacity for the First Defense® product line. The original lease 
term was ten years with a right to renew for a second 10-year term and a right of first offer to purchase. At the time we entered into 
this lease, we were not reasonably assured that we would exercise this renewal option in place of other real estate options. For that 
reason, a 10-year period was reflected in the right-of-use (ROU) asset and lease liability on our balance sheet. During the third quarter 
of 2022, we committed to lease an additional 15,400 square feet of space at 175 Industrial Way (Building 175B), which is connected 
to the original space, over a 20-year term. The ROU asset and lease liability for the committed space at Building 175B was recorded 
as of April 1, 2023 after construction of the building shell was completed in accordance with the lease agreement. Monthly lease 
payments commenced as of August 1, 2023. In connection with the lease commitment for space at Building 175B, the term of the 
original lease for Building 175A was extended by approximately 13 years. On November 14, 2023, we amended this lease further to 
provide for certain tenant improvements on the leased premises to be paid for by our landlord. These improvements will provide heat 
to an unfinished space, provide additional warehouse space, and create a new primary shipping and receiving facility. In consideration 
for the landlord agreeing to pay for the cost of those certain tenant improvements, we are obligated to make additional rent payments 
of $20,000 per month from November 2023 through June 2024 and a one-time additional rent payment of $488,743 in July 2024. The 
total lease liability for both leases over the amended terms (including inflationary adjustments) aggregates $4,739,077 as of November 
14, 2023. Because of this modification to the lease payments, the ROU asset and lease liability associated with the space at Building 
175B were remeasured as of the modification date. Our leases include variable non-lease components. Such payments primarily 
include common area maintenance charges. As of December 31, 2023, the balance of the operating lease ROU asset was $4,571,149 
and the operating lease liability was $4,721,385. As of December 31, 2022, the balance of the operating lease ROU asset was 
$2,194,670 and the operating lease liability was $2,249,182. The calculated amount of the ROU asset and lease liability is impacted by 
the length of the lease term and the discount rate used for the present value of the minimum lease payments. We elected not to 
separate lease and non-lease components for all classes of underlying assets, and instead to account for them as a single lease 
component. Variable lease cost primarily represents variable payments such as real estate taxes and common area maintenance. The 
following tables describe our lease costs and other lease information:   

F-18 

 
 
 
ImmuCell Corporation 
Notes to Audited Financial Statements (continued) 

Lease Cost 

Operating lease cost 
Variable lease cost 
Total lease cost 

Operating Leases 

Cash paid for operating lease liabilities 
Weighted average remaining lease term   
(in years) 
Weighted average discount rate 

During the Years   
Ended December 31,   

2023 

2022 

$348,929   
36,774   
$385,703   

$149,176   
36,404   
$185,580   

$248,595   

$148,302   

19.1 
7.11%   

20.1 
5.54%   

Future lease payments required under non-cancelable operating leases in effect as of December 31, 2023 were as follows: 

During the years ending December 31, 
2024 
2025 
2026 
2027 
2028 
Thereafter 
Total lease payments (undiscounted cash flows) 
Less: imputed interest (discount effect of cash flows) 
Total operating liabilities 

13. STOCKHOLDERS’ EQUITY 

Common Stock Issuances 

  Amount 

$946,003 
342,880 
349,744 
356,732 
363,870 
5,949,488 
8,308,717 
(3,587,332) 
$4,721,385 

From February 2016 to April 2021, we sold the aggregate of 4,553,017 shares of common stock in six different transactions 
raising gross proceeds of $26,714,403 at the weighted average price of $5.87 per share. These funds have been essential to funding our 
business growth plans. The details of each transaction are discussed below:   

1) During February of 2016, we sold 1,123,810 shares of common stock at a price to the public of $5.25 per share in an 
underwritten public offering pursuant to our effective shelf registration statement on Form S-3, raising gross proceeds of $5,900,003 
and resulting in net proceeds to the Company of $5,313,224 (after deducting underwriting discounts and offering expenses incurred in 
connection with the equity financing). 

2) During October of 2016, we sold, in a private placement, 659,880 shares of common stock to nineteen institutional and 

accredited investors at $5.25 per share, raising gross proceeds of $3,464,370 and resulting in net proceeds to the Company of 
$3,160,923 (after deducting placement agent fees and other expenses incurred in connection with the equity financing). 

3) During July of 2017, we sold 200,000 shares of our common stock at a price of $5.25 per share in a public, registered sale to 

two related investors pursuant to our effective shelf registration statement on Form S-3, raising gross proceeds of $1,050,000 and 
resulting in net proceeds of $1,034,164 (after deducting expenses incurred in connection with the equity financing). 

4) During December of 2017, we sold 417,807 shares of common stock at a price to the public of $7.30 per share in an 
underwritten public offering pursuant to our effective shelf registration statement on Form S-3, raising gross proceeds of $3,049,991 
and resulting in net proceeds to the Company of $2,734,173 (after deducting underwriting discounts and offering expenses incurred in 
connection with the equity financing).   

5) During March of 2019, we sold 1,636,364 shares of common stock at a price to the public of $5.50 per share in an 

underwritten public offering pursuant to our effective shelf registration statement on Form S-3, raising gross proceeds of $9,000,002 

F-19 

 
 
 
 
 
 
   
   
 
   
   
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
ImmuCell Corporation 
Notes to Audited Financial Statements (continued) 

and resulting in net proceeds to the Company of $8,303,436 (after deducting underwriting discounts and offering expenses incurred in 
connection with the equity financing).   

6) During April of 2021, we sold 515,156 shares of our common stock at a price of $8.25 per share in a public, registered sale to 
seven investors pursuant to our effective shelf registration statement on Form S-3, raising gross proceeds of $4,250,038 and resulting 
in net proceeds of $4,233,026 (after deducting expenses incurred in connection with the equity financing). 

Stock Option Plans 

In June 2010, our stockholders approved the 2010 Stock Option and Incentive Plan (the “2010 Plan”) pursuant to the provisions 

of the Internal Revenue Code of 1986, under which employees and certain service providers may be granted options to purchase 
shares of the Company’s common stock at no less than fair market value on the date of grant. At that time, 300,000 shares of common 
stock were reserved for issuance under the 2010 Plan and subsequently no additional shares have been reserved for the 2010 Plan. 
Vesting requirements are determined by the Compensation and Stock Option Committee of the Board of Directors on a case-by-case 
basis. All options granted under the 2010 Plan expire no later than 10 years from the date of grant. The 2010 Plan expired in June 
2020, after which date no further options can be granted under the 2010 Plan. However, options outstanding under the 2010 Plan at 
that time can be exercised in accordance with their terms. There were 188,500 and 202,500 options outstanding under the 2010 Plan as 
of December 31, 2023 and 2022, respectively. 

In June 2017, our stockholders approved the 2017 Stock Option and Incentive Plan (the “2017 Plan”) pursuant to the provisions 

of the Internal Revenue Code of 1986, under which employees and certain service providers may be granted options to purchase 
shares of the Company’s common stock at no less than fair market value on the date of grant. At that time, 300,000 shares of common 
stock were reserved for issuance under the 2017 Plan. An amendment to the 2017 Plan increasing the number of shares reserved for 
issuance under the 2017 Plan from 300,000 shares to 650,000 shares was approved by a vote of stockholders at the Annual Meeting of 
Stockholders in June 2022. Vesting requirements are determined by the Compensation and Stock Option Committee of the Board of 
Directors on a case-by-case basis. All options granted under the 2017 Plan expire no later than 10 years from the date of grant. The 
2017 Plan expires in March 2027, after which date no further options can be granted under the 2017 Plan. However, options 
outstanding under the 2017 Plan at that time can be exercised in accordance with their terms. As of December 31, 2023 and 2022, 
there were 430,000 and 402,500 options outstanding under the 2017 Plan, respectively.   

Activity under the stock option plans described above was as follows: 

Outstanding as of December 31, 2021 

Grants 
Terminations/forfeitures(2) 
Exercises 

Outstanding as of December 31, 2022 

Grants 
Terminations/forfeitures(2) 
Exercises 

Outstanding as of December 31, 2023 
Vested as of December 31, 2023 
Vested and expected to vest as of 

December 31, 2023 
Reserved for future grants 

2010 Plan 

2017 Plan 

  Weighted 
Average 
Exercise Price 

218,500   
—   
(11,000)   
(5,000)   
202,500   
—   
(10,000)   
(4,000)   
188,500   
188,500   

224,500   
210,500   
(32,500)   
—   
402,500   
122,000   
(94,500)   
—   
430,000   
92,500   

  Aggregate 
Intrinsic 
Value(1) 
$468,425 

($661,310) 

$6.94   
$7.73   
$7.34   
$6.13   
$7.19   
$5.16   
$7.12   
$4.69   
$6.82   ($1,071,121) 
($377,712) 
$6.43   

188,500   
—   

430,000   
202,000   

$6.82   ($1,071,121) 

(1) Intrinsic value is the difference between the fair market value of the underlying common stock as of the date indicated and as of 
the date of the option grant (which is equal to the option exercise price). 
(2) Terminations and forfeitures are recognized when they occur.   

F-20 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
ImmuCell Corporation 
Notes to Audited Financial Statements (continued) 

The following table displays additional information about the stock option plans described above: 

Non-vested stock options as of January 1, 2023 
Non-vested stock options as of December 31, 2023 
Stock options granted during the year ended   

December 31, 2023 

Stock options that vested during the year ended December 31, 2023 
Stock options that were terminated or forfeited during the year ended 

December 31, 2023 

  Weighted 
Average   
Fair Value at 
Grant Date 

  Weighted 
Average 
Exercise 
Price 

Number of 
Shares 

307,000   
337,500   

122,000 
57,000   

$3.80   
$3.66   

$2.80 
$2.23   

104,500 

$3.30 

$7.71 
$7.14 

$5.16 
$5.59 

$7.12 

During the year ended December 31, 2023, 4,000 stock options were exercised by one employee with $18,760 in cash. During 

the year ended December 31, 2022, one former employee and two employees exercised stock options covering 5,000 shares with 
$30,670 in cash. The aggregate intrinsic value of options exercised during the years ended December 31, 2023 and 2022 was $1,040 
and $10,525, respectively. The weighted average remaining life of the options outstanding under the 2010 Plan and the 2017 Plan as 
of December 31, 2023 was approximately 5 years and 8 months. The weighted average remaining life of the options exercisable under 
these plans as of December 31, 2023 was approximately 3 years and 6 months. The exercise prices of the options outstanding as of 
December 31, 2023 ranged from $4.00 to $10.04 per share. The 122,000 stock options granted during the year ended December 31, 
2023 had exercise prices between $4.61 and $5.22 per share. The 210,500 stock options granted during the year ended December 31, 
2022 had exercise prices between $6.52 and $9.39 per share. The weighted-average grant date fair values of options granted during the 
year ended December 31, 2023 and 2022 were $2.80 and $4.03 per share, respectively. As of December 31, 2023, total unrecognized 
stock-based compensation related to non-vested stock options aggregated $619,845, which will be recognized over a weighted average 
remaining period of approximately 1 year and 8 months. The fair value of each stock option grant has been estimated on the date of 
grant using the Black-Scholes option pricing model, for the purpose discussed in Note 2(n), with the following weighted-average 
assumptions: 

Risk-free interest rate(1) 
Dividend yield(2) 
Expected volatility(2) 
Expected life(3) 

During the Years   
Ended December 31, 

2023 
3.59% 
0% 
54% 
6.2 years 

2022 
3.04% 
0% 
53% 
5.9 years 

(1) The risk-free interest rate is based on U.S. Treasury yields for a maturity approximating the expected option term. 
(2) The dividend yield and expected volatility are derived from averages of our historical data. 
(3) The expected life is calculated utilizing the simplified method, which uses the mid-point between the vesting period and the 
contractual term as the expected life. 

Common Stock Rights Plan 

In September 1995, our Board of Directors adopted a Common Stock Rights Plan (the “Rights Plan”) and declared a dividend of 

one common share purchase right (a “Right”) for each of the then outstanding shares of the common stock of the Company. Each 
Right entitles the registered holder to purchase from the Company one share of common stock at an initial purchase price of $70.00 
per share, subject to adjustment. The description and terms of the Rights are set forth in a Rights Agreement between the Company 
and Equiniti Trust Company, LLC, as Rights Agent. 

The Rights (as amended) become exercisable and transferable apart from the common stock upon the earlier of i) 10 days 
following a public announcement that a person or group (Acquiring Person) has, without the prior consent of the Continuing Directors 
(as such term is defined in the Rights Agreement), acquired beneficial ownership of 20% or more of the outstanding common stock or 
ii) 10 days following commencement of a tender offer or exchange offer the consummation of which would result in ownership by a 
person or group of 20% or more of the outstanding common stock (the earlier of such dates being called the Distribution Date). 

Upon the Distribution Date, the holder of each Right not owned by the Acquiring Person would be entitled to purchase common 

stock at a discount to the initial purchase price of $70.00 per share, effectively equal to one half of the market price of a share of 

F-21 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
ImmuCell Corporation 
Notes to Audited Financial Statements (continued) 

common stock on the date the Acquiring Person becomes an Acquiring Person. If, after the Distribution Date, the Company should 
consolidate or merge with any other entity and the Company were not the surviving company, or, if the Company were the surviving 
company, all or part of the Company’s common stock were changed or exchanged into the securities of any other entity, or if more 
than 50% of the Company’s assets or earning power were sold, each Right would entitle its holder to purchase, at the Rights’ then-
current purchase price, a number of shares of the acquiring company’s common stock having a market value at that time equal to 
twice the Right’s exercise price. 

At any time after a person or group becomes an Acquiring Person and prior to the acquisition by such person or group of 50% or 
more of the outstanding common stock, the Board of Directors of the Company may exchange the Rights (other than Rights owned by 
such person or group which have become void), in whole or in part, at an exchange ratio of one share of common stock per Right 
(subject to adjustment). At any time prior to 14 days following the date that any person or group becomes an Acquiring Person 
(subject to extension by the Board of Directors), the Board of Directors of the Company may redeem the then outstanding Rights in 
whole, but not in part, at a price of $0.005 per Right, subject to adjustment.   

During the third quarter of 2011, our Board of Directors voted to authorize an amendment to the Rights Plan to increase the 

ownership threshold for determining “Acquiring Person” status to 20%. During the second quarter of 2015, our Board of Directors also 
voted to authorize an amendment to remove a provision that prevented a new group of directors elected following the emergence of an 
Acquiring Person (an owner of more than 20% of our stock) from controlling the Rights Plan by maintaining exclusive authority over the 
Rights Plan with pre-existing directors. We did this because such provisions have come to be viewed with disfavor by Delaware courts. 
Each time that we made such amendments we entered into amendments to the Rights Agreement with the Rights Agent reflecting such 
extensions, threshold increases or provision changes. No other changes have been made to the terms of the Rights or the Rights Plan.   

At various times over the years, our Board of Directors, which has the authority to amend the Rights Plan, has voted to authorize 

amendments to the Rights Plan to extend the expiration date of the Rights Plan. Our Board of Directors decided to seek an advisory vote 
by stockholders at the Annual Meeting of Stockholders held in June 2022, as to whether to extend the Rights Plan by one year to 
September 19, 2023. Of the votes actually cast on this proposal, 65% voted in favor, 32% voted against and 3% abstained. On the 
basis of this vote, our Board of Directors voted to extend the Rights Plan by one year to September 19, 2023. Our Board of Directors 
decided to seek another advisory vote by stockholders at the Annual Meeting of Stockholders held in June 2023, as to whether to extend 
the Rights Plan by another year to September 19, 2024. Of the votes actually cast on this proposal, 65.10% voted in favor, 34.60% voted 
against and 0.30% abstained. On the basis of this vote, our Board of Directors voted to extend the Rights Plan by one year to September 
19, 2024. Recognizing that there might be a substantial number of broker non-votes, our Board of Directors disclosed that it would be 
guided by the votes actually cast on these proposals in deciding whether to extend the expiration date of such plan by one year. 

Authorized Common Stock 

At the June 14, 2018 Annual Meeting of Stockholders, our stockholders voted to approve an amendment to our Certificate of 
Incorporation to increase the number of shares of common stock authorized for issuance from 8,000,000 to 11,000,000. At the June 10, 
2020 Annual Meeting of Stockholders, our stockholders voted to approve an amendment to our Certificate of Incorporation to increase 
the number of shares of common stock authorized for issuance from 11,000,000 to 15,000,000. 

14. REVENUE   

We primarily offer the First Defense product line to dairy and beef producers to prevent scours in newborn calves. Generally, 

our products are promoted to veterinarians as well as dairy and beef producers by our sales team and then sold through distributors. 
Our primary market is North America. We do sell into select international regions and may expand this international reach in the       
future. There were no material changes between the allocation and timing of revenue recognition during the years ended December 31, 
2023 or 2022. We do not have any contract assets for which we have satisfied the performance obligations, but do not yet have the 
right to bill for, or contract liabilities such as customer advances. All trade receivables on our balance sheet are from contracts with 
customers. We incur no material costs to obtain contracts. 

F-22 

 
 
 
ImmuCell Corporation 
Notes to Audited Financial Statements (continued) 

The following table presents our product sales disaggregated by geographic area: 

United States 
Other 

Total Product Sales 

During the Years Ended December 31, 

2023 

   % 

2022 

% 

$15,949,382   
1,522,287   
$17,471,669   

91%  
9%  
100%  

$17,020,797  
1,547,165  
$18,567,962  

92%  
8%  
100%  

The following table presents our product sales disaggregated by major product category: 

During the Years Ended December 31, 

2023 

    % 

2022 

% 

First Defense® product line   
Other animal health 

Total Product Sales 

$17,293,933    
177,736    
$17,471,669    

99%  
1%  
100%  

$18,411,949  
156,013  
$18,567,962  

99%  
1%  
100%  

15. OTHER EXPENSES, NET 

Other (income) expenses net, consisted of the following: 

Interest expense(1) 
Loss (gain) on disposal of property, plant and 

equipment 
Interest income 
Insurance recovery(2) 
Income-other 
Other expenses, net 

During the Years Ended December 31, 

2023 

2022 

$475,598   

$348,536   

8,099 
(96,570)   
(365,127)   
(107)   
$21,893   

(7,334) 
(153,100)   
—   
(912)   
$187,190   

(1) Interest expense includes amortization of debt issuance and debt discount costs of $22,619 and $7,658 during the years ended 
December 31, 2023 or 2022, respectively.                                                                                                                                                                                                         
(2) The insurance recovery income resulted from insurance benefit proceeds paid to us under our business interruption policy related to 
the product contamination losses and a recovery from a vendor’s policy related to an equipment malfunction. 

16. INCOME TAXES 

Our income tax expense aggregated $4,627 and $7,672 (amounting to less than 1% of our loss before income taxes) during the 

years ended December 31, 2023 and 2022, respectively. As of December 31, 2023, we had federal net operating loss carryforwards of 
$17,759,519 of which $16,047,612 do not expire and of which $1,711,907 expire in 2034 through 2037 (if not utilized before then) 
and state net operating loss carryforwards of $4,681,644 that expire in 2037 through 2038 (if not utilized before then). Additionally, 
we had federal general business tax credit carryforwards of $726,474 that expire in 2027 through 2042 (if not utilized before then) and 
state tax credit carryforwards of $775,473 that expire in 2024 through 2042 (if not utilized before then).   

The provision for income taxes is determined using the asset and liability approach of accounting for income taxes. Under this 
approach, deferred taxes represent the estimated future tax effects of temporary differences between book and tax treatment of assets 
and liabilities and carryforwards to the extent they are realizable. During the second quarter of 2018, we assessed our historical and near-
term future profitability and recorded $563,252 in non-cash income tax expense to create a full valuation allowance against our net deferred tax 
assets (which consist largely of net operating loss carryforwards and federal and state credits) based on applicable accounting standards and 
practices. At that time, we had incurred a net loss for six consecutive quarters, had not been profitable on a year-to-date basis since the nine-
month period ended September 30, 2017 and projected additional net losses for some period going forward before returning to profitability. 
Should future profitability be realized at an adequate level, we would be able to release this valuation allowance (resulting in a non-cash income 
tax benefit) and realize these deferred tax assets before they expire. We will continue to assess the need for the valuation allowance at each 
quarter and, in the event that actual results differ from these estimates, or we adjust these estimates in future periods, we may need to adjust our 
valuation allowance. Currently, we adjust the valuation allowance at the end of each quarter to reduce the value of our deferred tax assets to zero.   

F-23 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
ImmuCell Corporation 
Notes to Audited Financial Statements (continued) 

Net operating loss carryforwards, credits, and other tax attributes are subject to review and possible adjustment by the Internal 

Revenue Service. Section 382 of the Internal Revenue Code contains provisions that could place annual limitations on the future 
utilization of net operating loss carryforwards and credits in the event of a change in ownership of the Company, as defined. 

We file income tax returns in the U.S. federal jurisdiction and several state jurisdictions. We currently have no tax examinations 

in progress. We also have not paid additional taxes, interest or penalties as a result of tax examinations nor do we have any 
unrecognized tax benefits for any of the periods in the accompanying audited financial statements. 

The income tax provision consisted of the following: 

Current 

Federal 
State 

Current subtotal 
Deferred 

Federal 
State 

Deferred subtotal, gross 
Valuation allowance 

Deferred subtotal, net 
Income tax expense   

  During the Years Ended December 31, 

2023 

2022 

$— 
4,627 
4,627 

(1,179,474) 
(145,802) 
(1,325,276) 
1,325,276 
— 
$4,627 

$— 
7,672 
7,672 

(576,780) 
(88,533) 
(665,313) 
665,313 
— 
$7,672 

The actual income tax expense differs from the expected tax computed by applying the U.S. federal corporate tax rate of 21% to 

the loss before income taxes during the years ended December 31, 2023 and 2022 respectively, as follows: 

During the Years Ended December 31, 

2023 

2022 

$ 

% 

$ 

% 

Computed expected income tax expense rate 
State income taxes, net of federal expense 
Share-based compensation 
Tax credits 
Valuation allowance 
Other 
Income tax expense/rate   

($1,211,694) 
(117,149)   
56,214   
(53,241)   
1,325,276   
5,221   
$4,627   

(21.00%) 
(2.03)   
0.97   
(0.92)   
0.09   
22.97   
0.08%   

($522,088) 
(47,643)   
36,652   
(131,361)   
665,313   
6,799   
$7,672   

(21.00%) 
(1.92) 
1.48 
(5.28) 
26.76 
0.27 
0.31% 

The significant components of our deferred tax assets, net, consisted of the following: 

Property, plant and equipment 
Federal general business tax credits 
Federal net operating loss carryforwards 
State tax credits and net operating loss carryforwards 
§174 R & D expenditures 
Deferred compensation 
Prepaid expenses and other 
UNICAP 
Incentive compensation 
Valuation allowance 
Deferred tax assets, net 

F-24 

As of December 31, 

2023 

($2,121,940)   
726,474   
3,729,500   
886,428   
592,915   
50,722   
37,124   
32,607   
100,200   
(4,034,030)   
$—   

2022 

($2,530,472) 
673,233 
3,258,395 
817,617 
341,683 
23,370 
15,587 
32,787 
76,554 
(2,708,754) 
$— 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
ImmuCell Corporation 
Notes to Audited Financial Statements (continued) 

17. SEGMENT INFORMATION 

Our business operations (being the development, acquisition, manufacture and sale of products that improve the health and 

productivity of dairy and beef cattle) are described in Note 1. Pursuant to Codification Topic 280, Segment Reporting, we operate in 
the following two reportable business segments: i) Scours and ii) Mastitis. The Scours segment consists of the First Defense® product 
line. The core technology underlying the Scours segment is derived around polyclonal antibodies. The Mastitis segment includes our 
products, CMT and Re-Tain®. Re-Tain® is projected to be the driver of this segment when approved for sale. The core technology 
underlying the Mastitis segment is derived around a bacteriocin called Nisin. The category we define as “Other” includes unallocated 
administrative and overhead expenses and other products. The significant accounting policies of these segments are described in Note 
2. Product sales are the primary factor we use in determining our reportable segments. The governing regulatory authority (USDA for 
First Defense® or FDA for Re-Tain®) is also a factor in determining our reportable segments. Management monitors and evaluates 
segment performance from sales to net operating income (loss) closely. We are not organized by geographic region. No segments have 
been aggregated. The revenues and expenses allocated to each segment are in some cases direct and in other cases involve reasonable 
and consistent estimations by management. Each operating segment is defined as the component of our business for which financial 
information is available and evaluated regularly by our chief operating decision-maker in deciding how to allocate resources and in 
assessing performance. Our chief operating decision-maker is our President and CEO. 

During the Year Ended December 31, 2023 

  Mastitis 

Other 

Product sales 
Costs of goods sold 
Gross margin 

Product development expenses 
Sales and marketing expenses 
Administrative expenses 
      Operating expenses 

Scours 
$17,293,933 
13,453,514 
3,840,419 

11,103 
2,447,137 
— 
2,458,240 

$177,736   
148,871   
28,865   

4,242,329   
641,078   
—   
4,883,407   

$—   
—   
—  

Total 
$17,471,669 
13,602,385 
3,869,284 

141,420   
—   
2,134,295   
2,275,715   

4,394,852 
3,088,215 
2,134,295 
9,617,362 

NET OPERATING INCOME (LOSS) 

$1,382,179 

 ($4,854,542)   

($2,275,715)   

($5,748,078) 

Product sales 
Costs of goods sold 
Gross margin 

Product development expenses 
Sales and marketing expenses 
Administrative expenses 
      Operating expenses 

During the Year Ended December 31, 2022 

Scours 
$18,411,949 
10,754,189 
7,657,760 

66,346 
1,871,926 
— 
1,938,272 

  Mastitis 

Other 

$154,558   
136,347   
18,211   

4,317,921   
1,318,107   
—   
5,636,028   

$1,455   
28,647   
(27,192)   

109,605   
—   
2,263,817   
2,373,422   

Total 
$18,567,962 
10,919,183 
7,648,779 

4,493,872 
3,190,033 
2,263,817 
9,947,722 

NET OPERATING INCOME (LOSS) 

$5,719,488 

 ($5,617,817)   

($2,400,614)   

($2,298,943) 

Total Assets as of December 31, 2023 
Total Assets as of December 31, 2022 
Depreciation and amortization expense during the 

Scours 
$24,735,413 
$20,539,523 

  Mastitis 
  $17,827,839   
  $18,315,492   

Other 

$1,244,850   
$6,005,634   

Total 
$43,808,102 
$44,860,649 

year ended December 31, 2023 

$1,365,988 

  $1,287,600   

$86,032 

$2,739,620 

Depreciation and amortization expense during the 

year ended December 31, 2022 

Capital Expenditures during the year ended 

December 31, 2023 

Capital Expenditures during the year ended 

$1,169,011 

  $1,263,318   

$62,912 

$2,495,241 

$1,096,819 

$795,694   

$— 

$1,892,513 

December 31, 2022 

$3,513,336 

$414,486   

$47,452 

$3,975,274 

F-25 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
 
   
   
 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
ImmuCell Corporation 
Notes to Audited Financial Statements (continued) 

18. RELATED PARTY TRANSACTIONS 

David S. Tomsche (Chair of our Board of Directors) is a controlling owner of Leedstone Inc., a domestic distributor of our 
products (the First Defense product line and CMT). His affiliated company purchased $231,405 and $587,677 of products from us 
during the years ended December 2023 and 2022, respectively, all on terms consistent with those offered to other distributors of similar 
status. Our accounts receivable (subject to standard and customary payment terms) due from this affiliated company aggregated $42,507 
and $46,426 as of December 31, 2023 and 2022, respectively. 

19. EMPLOYEE BENEFITS 

We have a 401(k) savings plan (the Plan) in which all employees completing one month of service with the Company are 
eligible to participate. Participants may contribute up to the maximum amount allowed by the Internal Revenue Service. We currently 
match 100% of the first 3% of each employee’s salary that is contributed to the Plan and 50% of the next 2% of each employee’s 
salary that is contributed to the Plan. Under this matching plan, we paid $178,150 and $159,058 into the Plan for the years ended 
December 31, 2023 and 2022, respectively.   

20. SUBSEQUENT EVENTS 

We have evaluated subsequent events through the time of filing on the date we have issued this Annual Report on Form 10-K. 

As of the time of filing, there were no material, reportable subsequent events. 

F-26 

 
 
 
 
 
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has 

duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. 

Signatures 

Date: April 1, 2024 

ImmuCell Corporation 
Registrant 

By: 

/s/ Michael F. Brigham 
Michael F. Brigham President, Chief Executive Officer and 
Principal Financial Officer 

POWER OF ATTORNEY 

We, the undersigned directors and employees of ImmuCell Corporation, hereby severally constitute and 

appoint Michael F. Brigham our true and lawful attorney-in-fact and agent with full power of substitution and re-
substitution, for us and in our stead, in any and all capacities, to sign any and all amendments to this report and all 
documents relating thereto, and to file the same, with all exhibits thereto, and other documents in connection 
therewith, with the Securities and Exchange Commission, granting unto said attorney-in-fact and agent full power 
and authority to do and perform each and every act and thing necessary or advisable to be done in and about the 
premises, as fully to all intents and purposes as he might or could do in person, hereby ratifying and confirming all 
that said attorney-in-fact and agent, or his substitute or substitutes, may lawfully do or to be done by virtue hereof. 

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the 

following persons on behalf of the registrant and in the capacities and on the dates indicated. 

Signature 

Title 

Date 

/s/ Gloria J. Basse 
Gloria J. Basse 

  Director 

/s/ Michael F. Brigham 
Michael F. Brigham 

  President, Chief Executive Officer 
   Principal Financial Officer and Director 

  March 29, 2024 

  March 29, 2024 

/s/ Bobbi Jo Brockmann 
Bobbi Jo Brockmann 

/s/ Bryan K. Gathagan 
Bryan K. Gathagan 

/s/ Steven T. Rosgen 
Steven T. Rosgen 

/s/ David S. Tomsche 
David S. Tomsche, DVM 

/s/ Elizabeth S. Toothaker 
Elizabeth S. Toothaker 

/s/ Paul R. Wainman 
Paul R. Wainman 

  Vice President of Sales and Marketing and Director 

  March 29, 2024 

  Director 

  Director 

  Director 

  Controller 

  Director 

  March 29, 2024 

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  March 29, 2024