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Vicor

vicr · NASDAQ Technology
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Ticker vicr
Exchange NASDAQ
Sector Technology
Industry Hardware, Equipment & Parts
Employees 501-1000
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FY2024 Annual Report · Vicor
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Table of Contents
 
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, 2024
 
 

TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) 
OF THE SECURITIES EXCHANGE ACT OF 1934
 
For the transition period from	
	
to 
Commission file number 0-18277
VICOR CORPORATION
(Exact name of registrant as specified in its charter)
 
Delaware
04-2742817
(State or other jurisdiction of
incorporation or organization)
(IRS employer
identification no.)
25 Frontage Road, Andover, Massachusetts
01810
(Address of principal executive offices)
(Zip code)
 
Registrant’s telephone number, including area code:
(978) 470-2900
 
Securities registered pursuant to Section 12(b) of the Act:
 
Title of each class 
Trading Symbol(s)
Name of each exchange on which registered
Common Stock, par value $0.01 per share
VICR
The NASDAQ Stock Market LLC 
 
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 Section 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 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. See 
the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act. 
 
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 required 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 of the registrant held by non-affiliates (for this purpose, persons and entities other than executive officers and 
directors) of the registrant, as of the last trading day of the registrant's most recently completed second fiscal quarter (June 28, 2024) was approximately $752,864,109.
 
 
Title of Each Class
  
Number of Shares of Common Stock 
Outstanding as of February 18, 2025
Common Stock
  
33,443,745
Class B Common Stock
  
11,738,718
 
DOCUMENTS INCORPORATED BY REFERENCE
 
Portions of the Company’s definitive proxy statement (the “Definitive Proxy Statement”) to be filed with the Securities and Exchange Commission pursuant to Regulation 14A and relating to 
the Company’s 2025 annual meeting of stockholders are incorporated by reference into Part III.
Auditor Id:    185                                     Auditor Name:     KPMG LLP                           Auditor Location: Boston, MA 
 
 

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PART I
In this Annual Report on Form 10-K, unless the context indicates otherwise, references to “Vicor®,” “the Company,” “our company,” “we,” “us,” 
“our,” and similar references, refer to Vicor Corporation and its subsidiaries, unless otherwise specified.
Our consolidated operating results are affected by a wide variety of factors that could materially and adversely affect revenues and profitability, 
including the risk factors described in Item 1A of this Annual Report on Form 10-K. As a result of these and other factors, we may experience material 
fluctuations in future operating results on a quarterly or annual basis, which could materially and adversely affect our business, consolidated financial 
condition, operating results, and the share price of our Common Stock.  This document and other documents filed by us with the Securities and Exchange 
Commission ("SEC") include forward-looking statements regarding future events and our future results that are subject to the safe harbor afforded under 
the Private Securities Litigation Reform Act of 1995 and other safe harbors afforded under the Securities Act of 1933 and the Securities Exchange Act of 
1934. All statements other than statements of historical fact are statements that could be deemed forward-looking statements.  Forward-looking statements 
are based on our current beliefs, expectations, estimates, forecasts, and projections for our future performance and are subject to risks and uncertainties. 
Forward-looking statements are identified by the use of words denoting uncertain, future events, such as “anticipate,” “assume,” “believe,” “continue,” 
“could,” “estimate,” “expect,” “future,” “goal,” “if,” “intend,” “may,” “plan,” “potential,” “project,” “prospective,” “seek,” “should,” “target,” “will,” or 
“would,” as well as similar words and phrases, including the negatives of these terms, or other variations thereof. Forward-looking statements also include, 
but are not limited to, statements regarding: our ability to address certain supply chain risks; our ongoing development of power conversion architectures, 
switching topologies, materials, packaging, and products; the ongoing transition of our business strategically, organizationally, and operationally from 
serving a large number of relatively low volume customers across diversified markets and geographies to serving a small number of relatively large volume 
customers; our intent to enter new market segments; the levels of customer orders overall and, in particular, from large customers and the delivery lead 
times associated therewith; anticipated new and existing customer wins; the financial and operational impact of customer changes to shipping schedules; 
the derivation of a portion of our sales in each quarter from orders booked in the same quarter; our intent to expand the percentage of revenue associated 
with licensing our intellectual property to third parties; our plans to invest in expanded manufacturing capacity, including the implementation of new 
manufacturing processes; our belief that cash generated from operations together with our available cash and cash equivalents will be sufficient to fund 
planned operational needs and capital equipment purchases, for the foreseeable future; our outlook regarding tariffs and the impact thereof on our business; 
our belief that we have limited exposure to currency risks; our intentions regarding the declaration and payment of cash dividends; our intentions regarding 
protecting our rights under our patents; and our expectation that no current litigation or claims will have a material adverse impact on our financial position 
or results of operations.  These forward-looking statements are based upon our current expectations and estimates associated with prospective events and 
circumstances that may or may not be within our control and as to which there can be no assurance.  Actual results could differ materially from those 
implied by forward-looking statements as a result of various factors, including but not limited to those described under Part I, Item 1 — “Business,” under 
Part I, Item 1A — “Risk Factors,” under Part I, Item 3 — “Legal Proceedings,” and under Part II, Item 7 — “Management’s Discussion and Analysis of 
Financial Condition and Results of Operations.” The discussion of our business contained herein, including the identification and assessment of factors that 
may influence actual results, may not be exhaustive.  Therefore, the information presented should be read together with other documents we file with the 
SEC from time to time, including our Quarterly Reports on Form 10-Q and our Current Reports on Form 8-K, which may supplement, modify, supersede, 
or update the factors discussed in this Annual Report on Form 10-K.  Any forward-looking statement made in this Annual Report on Form 10-K is based 
on information currently available to us and speaks only as of the date on which it is made. We do not undertake any obligation to update any forward-
looking statements as a result of future events or developments, except as required by law.
ITEM 1.  BUSINESS   
 
Overview
 
We design, develop, manufacture, and market modular power components and power systems for converting electrical power (expressed as “watts,” 
and represented by the symbol “W”, with wattage being the product of voltage, expressed as “volts,” and represented by the symbol “V,” and current, 
expressed as “amperes,” and represented by the symbol “I”).   In electrically-powered devices utilizing alternating current (“AC”) voltage from a primary 
AC source (for example, a wall outlet), a power system converts AC voltage into the stable direct current (“DC”) voltage necessary to power subsystems 
and/or individual applications and devices (known as “loads”).  In many electronic devices, this DC voltage may be further converted to one or more 
voltages and currents required by a range of loads.  In equipment utilizing DC voltage from a primary DC source (for example, a battery) or a secondary 
source (such as an AC-DC converter), the initial DC voltage similarly may require further conversion.  A power system most commonly incorporates four 
voltage conversion functions: transformation, isolation, rectification, and regulation.  

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Transformation refers to the process of increasing or decreasing an AC voltage; isolation refers to the electrical separation, for safety, of primary and 
secondary voltages in a transformer; rectification refers to the process of converting a voltage from AC to DC and/or from DC to AC; and regulation refers 
to the process of providing a near constant voltage under a range of line and load conditions. Because numerous applications requiring different voltages, 
currents, and varied power ratings may exist within an electronically-powered device, and system power architectures themselves vary, we offer an 
extensive range of products and accessories in numerous application-specific configurations.  We believe our product offering is among the most 
comprehensive in the market segments we serve.  In addition to offering competitively differentiated products for sale, we also offer and engage in 
licensing arrangements with customers, resulting in royalty revenue.
Our strategy, competitive positioning, and product offerings are all based on highly differentiated product performance, reflecting our anticipation of 
the evolution of system power architectures and customer performance requirements.  Since the Company was founded, we have pursued continuous 
innovations in product design and achievements in product performance, largely enabled by our focus on the research and development of advanced 
technologies and processes, often implemented in proprietary semiconductor circuitry, materials, and packaging.  Reflecting this strategy, we categorize 
our offerings as either “Advanced Products” or “Brick Products,” generally based on design, performance, and form factor considerations, as well as the 
range of evolving applications for which the products are appropriate.  
Our competition varies, depending on the market segment and application.  Generally, we compete with developers and manufacturers of integrated 
circuits and semiconductor-based modules when addressing the needs of customers in enterprise computing and other market segments with 
implementations of our proprietary Factorized Power ArchitectureTM (“FPA”) using Advanced Products.  In contrast, we generally compete with 
manufacturers of integrated power supplies when addressing the needs of customers, across a wide range of market segments, implementing conventional 
power systems architectures (e.g., Centralized Power Architecture (“CPA”), Distributed Power Architecture (“DPA”), and Intermediate Bus Architecture 
(“IBA”)) using Brick Products.
Our website, www.vicorpower.com, sets forth detailed information describing our products, the applications for which they may be used, and our 
suite of design tools.  The information contained on our website is not a part of, nor incorporated by reference into, this Annual Report on Form 10-K and 
shall not be deemed “filed” under the Securities Exchange Act of 1934, as amended (the “Exchange Act”). 
We are headquartered in Andover, Massachusetts, where our manufacturing facility is located. Our wholly-owned subsidiary, VICR Securities 
Corporation, also is located in Andover, Massachusetts.  Our other domestic offices are located in Santa Clara, California, Lombard, Illinois, and Lincoln, 
Rhode Island.  Our two Vicor Custom Power
tm subsidiaries, Freedom Power Systems, Inc. and Northwest Power, Inc., are located in Cedar Park, Texas, 
and Milwaukie, Oregon, respectively.  
We have established individual subsidiaries or unincorporated branch offices outside of the United States, which we call Technical Support Centers 
(“TSCs”), to conduct preparatory and auxiliary services in support of the Company.  Vicor Japan Company, Ltd. (“VJCL”), our 92.5%-owned Japanese 
subsidiary, which is engaged in sales and customer support activities exclusively for the sale of certain products customized by VJCL for the Japanese 
market, is headquartered in Tokyo, Japan.  
Our remaining subsidiaries and their legal domicile are set forth in Exhibit 21.1 to this Annual Report on Form 10-K. The activities of all of the 
entities referred to above are consolidated in the financial statements presented herein.
Vicor was incorporated in Delaware in 1981, and we completed an initial public offering in May 1991.  The Company has two classes of common 
stock outstanding: shares of our “Common Stock,” listed on The NASDAQ Stock Market under the ticker symbol VICR, and shares of our Class B 
common stock, which are not subject to registration pursuant to the Exchange Act and are not listed on any exchange. 
Our Strategy
 
Our strategy emphasizes demonstrable product differentiation and a value proposition based on competitively superior solution performance, 
advantageous design flexibility, and a compelling total cost of ownership (“TCO”).  Since the Company was founded, our competitive position has been 
maintained by continuous innovations in product design and achievements in product performance, largely enabled by our focus on the research and 
development of advanced technologies and processes, often implemented in proprietary semiconductor circuitry, materials, and packaging.  Many of 

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our products incorporate patented or proprietary implementations of high-frequency switching topologies, which enable the design of power system 
solutions more efficient and much smaller than conventional alternatives.  This efficiency and small size is enabled by our proprietary switching circuitry 
and magnetic structures, as well as our use of highly differentiated packaging.     
Power system performance is based primarily on conversion efficiency (i.e., the ratio of output power (i.e., watts) to input power) and power density 
(i.e., the amount of output power divided by the volume of the power system).  Higher efficiency and density contribute to superior thermal performance, 
as the by-product of power conversion and distribution is heat, which must be dissipated in order to assure the performance of the power system solution 
itself and the overall system to which it is delivering power.  Power system performance also is based on the electrical characteristics of the power system 
(and their effect on and compatibility with the customer’s application).  Important electrical characteristics include transient responsiveness (i.e., the 
reaction of a power system to a sudden change in voltage or current levels) and noise profile (i.e., the level of electromagnetic interference created by 
power conversion).  We believe the superior performance of our power systems is the most important element of our differentiation strategy.  
Our strategy complements performance superiority with design flexibility (i.e., ease of use), as our products can be utilized individually or 
combined, given their level of integration, to create power system solutions specific to a customer’s precise needs.  We articulate this positioning through 
our “Power Component Design Methodology,” an element of our differentiation strategy, which is our approach to providing our customers the modular 
products, design tools, and engineering support to enable the rapid design of advanced power system solutions by customers and, thereby, accelerate their 
own product development cycles. Our value proposition is supported by a compelling TCO, representing the cost of acquiring and operating a power 
system over its useful life, driven by competitive product pricing, high reliability, and demonstrably lower electricity costs.
Our earliest market focus was on telecommunications infrastructure, which uses a standard DC distribution voltage of 48V (nominally 48V to 54V), 
the highest distribution voltage that meets Safety Extra-Low Voltage (“SELV”) standard requirements, while leaving sufficient margin for over-voltage 
protection circuits. While we offer products addressing other DC voltage standards (e.g., 380V for power distribution in data centers, 110V for rail 
applications, 28V for military and avionics applications, and 24V for industrial automation) and a broad range of customer requirements, we consider our 
core competencies to be associated with 48V distribution, which offers numerous inherent cost and performance advantages over lower distribution 
voltages, while remaining within the 60V SELV safety limit.  
Our product portfolio also includes families of “front-end” devices, which address applications requiring the transformation of AC voltages to 
regulated DC voltages.  Examples of such applications include powering data center server racks, large-scale LED lighting, specialized laboratory, 
diagnostic, and test equipment, small-cell wireless base stations, and higher power equipment for defense and industrial use.
Reflecting our strategy, we categorize our offerings as either Advanced Products or Brick Products, generally based on design, performance, and 
form factor considerations, as well as the range of evolving applications for which the respective categories are appropriate.  The Advanced Products 
category consists of our most innovative products, which are used to implement our proprietary distribution architecture, FPA, a highly differentiated 
approach to power distribution that enables flexible, rapid power system design using individual components optimized to perform a specific function.  The 
Brick Products category largely consists of integrated power converters (i.e., “bricks”), incorporating multiple conversion stages, used in conventional 
power systems architectures including CPA, DPA, and IBA. 
Given the growth profiles and performance requirements of the market segments served with Advanced Products and Brick Products, our strategy 
involves a continuing transition in organizational focus, emphasizing investment in Advanced Products design and manufacturing, targeting high growth 
market segments with a low-mix, high-volume operational model, while maintaining a profitable business in mature market segments we serve with Brick 
Products with a high-mix, low-volume operational model.
 
Our Products
 
Reflecting our Power Component Design Methodology, we offer a comprehensive range of modular building blocks enabling rapid design of a 
power system specific to a customer’s precise needs.  Based on design, performance, and form factor considerations, as well as the range of evolving 
applications for which the products are appropriate, we categorize our product portfolios as either Advanced Products or Brick Products.  We also sell a 
range of electrical and mechanical accessories for use with our products. 

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Advanced Products
 
We continue to invest in the research and development of power system technologies and product concepts addressing two accelerating trends, the 
first toward higher required conversion efficiencies, and the second toward more and diverse on-board voltages, higher performance demands of complex 
loads, and, in particular, higher current requirements of those loads.  These trends are most visible in the microprocessor-based applications we target with 
Advanced Products, for which energy consumption, energy efficiency, processor performance, and computing density are critical priorities.  Recognizing 
the performance and scale limitations of conventional power distribution architectures and products, we introduced FPA and a range of enabling products 
incorporating our latest advances in power distribution concepts, switching topologies, materials, and packaging.
FPA, which is focused on, but not limited to, 48V DC distribution solutions, increases power system conversion efficiency, density, and power 
delivery performance by “factorizing” (i.e., separating) the power conversion process into individual components, reducing the design limitations and 
thermal management challenges, and scaling trade-offs associated with conventional architectures for DC voltage distribution.  All such architectures 
follow a sequence whereby a DC voltage is first transformed, or reduced, and that lower voltage subsequently conducted (i.e., “bussed”) across the circuit 
to the “load” (i.e., the point of use), where the voltage is regulated and lowered once more, to the required operating voltage of the load.  In a FPA 
implementation, the sequence is reversed.  Regulation occurs first, and the regulation module can be placed in the optimal position for space utilization and 
thermal management. A regulated voltage approaching 48V is bussed across the circuit to the transformation module, which performs what we refer to as 
current multiplication, adjacent to the load.  Bussing high voltage minimizes the current levels across the circuit, thereby minimizing the potential for 
distribution losses and reducing the volume of the conduit (e.g., the copper wire). Placing the relatively low noise, low heat current multiplication module 
adjacent to the load further minimizes the potential for distribution losses associated with bussing a low operating voltage to the load and reduces the 
potential influence of the power system on the performance of the load.  
A typical FPA implementation for delivering 48V DC from a server backplane to a 1.0V microprocessor would consist of three modules: a PRM™ 
(Pre-Regulator Module) regulator, a VTM™ (Voltage Transformation Module) current multiplier, and a proprietary communications controller.  In 
contrast, a commodity IBA design for delivering 48V DC from a server backplane to a 1.0V microprocessor requires an additional conversion stage, to 
reduce 48V to 12V, and, at the point of load, a voltage regulation module (i.e., a “VRM” consisting of multiple switching regulators, each representing a 
phase and consisting of two switching transistors, one or more capacitors, and an inductor, with the transistors switched by pulse width modulation 
controller). For a 200W two stage, multiphase application, a 12V commodity IBA implementation would require an intermediate bus converter, to reduce 
48V to 12V, and a VRM solution consisting of parallel phases (i.e., multiple switching regulators) to reduce and regulate the current for use at 1.0V by the 
microprocessor.  Such a commodity IBA implementation requires a significantly higher component count, consumes more motherboard area, requires more 
copper conduit, generates more heat due to switching and distribution losses, offers inferior dynamic response, and can be meaningfully less efficient than a 
48V FPA implementation.  
The advantages of FPA over legacy power distribution architectures are most evident in high performance computing applications.  Our “Power-on-
Package” power system solutions meet the computational performance requirements of artificial intelligence (“AI”).  The microprocessors typically used in 
AI, particularly in more computationally demanding “machine learning” or “training” applications, are graphics processing units (“GPUs”) and custom 
application-specific integrated circuits (“ASICs”).  Unlike central processing units (“CPUs”), which are designed for serial execution of complex and broad 
instruction sets, GPUs and AI ASICs are designed for massively parallel (i.e., concurrent) processing of repetitive transactions or calculations.  As such, 
GPUs and AI ASICs generally operate at processing frequencies requiring the higher levels of average and peak current delivered by our FPA-based 
solutions. Our most popular Power-on-Package solution, consists of one MCD© (Modular Current Driver) unit, providing high-bandwidth, low-noise 
regulation, and two MCM© (Modular Current Multiplier) units, providing high performance current multiplication.  Power-on-Package delivers 
unprecedented current levels to GPUs and AI ASICs, in part due to the placement of the MCMs directly on the substrate onto which the processor is 
mounted, thereby minimizing distribution losses associated with high current levels.  Placement of MCM units on the substrate also reduces the number of 
GPU or ASIC processor substrate pins required for power, allowing for their use by other functions (e.g., memory input/output (“I/O”)).  This three-module 
laterally-mounted Power-on-Package configuration, powering an AI accelerator card requiring 350W, delivers 0.7V, 650A average current, and up to 
1,200A peak current to the GPU or AI ASIC.
 
Our latest innovation for powering processors is vertical power delivery, which involves mounting our highest-performance solutions on the 
underside of the motherboard, opposite the GPU or AI ASIC, thereby enabling a further reduction in distribution losses at the load, yielding higher 
efficiency and unprecedented power density.  Vertically-mounting the solution allows unrestricted access to microprocessor input/output I/O pins on the 
top side of the motherboard, thereby 

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improving I/O speed and memory access, which are a priority for GPUs and AI ASICs in AI applications. We continue the development of our vertical 
power delivery solutions and shipped prototype products to a certain customer in 2022.
 
Our proprietary technologies enable us to offer a range of Advanced Products, in various package formats across functional families, applicable to 
other market segments and power distribution architectures other than FPA.  Within computing, these market segments include AC to DC voltage 
conversion and DC voltage distribution in server racks and high voltage conversion across datacenter infrastructure.  We also offer Advanced Product 
power system solutions for aerospace and aviation (e.g., for use in satellites, unmanned aerial vehicles, and various airframes, including battery-powered 
aircraft, for which small size, light weight, and design flexibility are advantageous); defense electronics (e.g., for use in airborne, seaborne, or field 
communications and radar, for which reliability in harsh environments is a priority); factory automation, instrumentation, and test equipment (e.g., for use 
in robotics and semiconductor testing, for which high power levels and precision performance are required); telecommunications and networking 
infrastructure (e.g., for use in high-throughput data distribution and  pole-mounted small-cell base stations); and vehicles (e.g., in autonomous driving 
applications, electric vehicles, and hybrid electric vehicles). 
 
Annual revenue associated with the sale of Advanced Products which includes royalty revenue, was approximately 55.0%, 55.3%, and 61.0% of the 
Company’s consolidated revenue for the years ended December 31, 2024, 2023, and 2022, respectively.  
 
We anticipate the percentage of periodic revenue associated with the sale of Advanced Products will increase in the future, given our strategic and 
organizational focus and the relatively higher expected growth of the market segments we serve.
 
Brick Products
 
Brick-format converters provide the integrated transformation, rectification, isolation, regulation, filtering, and/or input protection necessary to 
power and protect loads, across a range of conventional power architectures.  We offer a wide range of brick-format DC-DC converters, as well as 
complementary components providing AC line rectification, input filtering, power factor correction, and transient protection. Wide ranges of input 
voltages, output voltages, and output power are offered, allowing end users to select components appropriate to their individual applications. The products 
differ in dimensions, temperature grades, maximum power ratings, performance characteristics, pin configuration, and, in certain cases, characteristics 
specific to the targeted market.
We also integrate these converters and components into complete power systems representing standard or custom AC-DC and DC-DC solutions for 
our customers' power needs.  We refer to such standard products as our “Configurable” product line, while our two Vicor Custom Power subsidiaries 
design, sell, and service custom power system solutions.  
We market our standard Brick Products emphasizing “mass customization,” using highly automated, efficient, domestic manufacturing to serve 
customers with product design and performance requirements, across a wide range of worldwide market segments, which could not be met by high-volume 
oriented competitors.  We focus on distributed power implementations, for which our brick-format products are well-suited, in market segments such as 
aerospace and defense electronics, industrial equipment, instrumentation and test equipment, and transportation (e.g., rail and heavy equipment 
applications).  Our customers range from independent manufacturers of highly specialized electronic devices to larger original equipment manufacturers 
(“OEMs”) and their contract manufacturers.  Some of our Brick Product lines have been in production for over a decade, reflecting the maturity of the 
markets we serve, the long-established relationships we have with many customers, and the long-standing suitability of our products to demanding 
applications.  
Annual revenue associated with the sale of Brick Products, inclusive of such sales of our Vicor Custom Power and VJCL subsidiaries, was 
approximately 45.0%, 44.7%, and 39.0% of the Company’s consolidated revenue for the years ended December 31, 2024, 2023, and 2022, respectively. 
 
Customers and Backlog
The applications in which our Advanced Products and Brick Products are used are typically in the higher-performance, higher-power segments of 
the market segments we serve.  With our Advanced Product lines, our customers are concentrated in the data center and hyperscaler segments of enterprise 
computing, in which our products are used for power delivery on server motherboards, in server racks, and across datacenter infrastructure, although we 
also serve applications in aerospace and aviation, defense electronics, satellites, factory automation, instrumentation, test equipment, transportation, 

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telecommunications and networking infrastructure, and vehicles (notably in the autonomous driving, electric vehicle, and hybrid vehicle niches of the 
vehicle segment).  With our Brick Product lines, we serve customers concentrated in aerospace and defense electronics, industrial equipment, 
instrumentation and test equipment, and transportation (notably in rail and heavy equipment applications). With our strategic emphasis on larger, high-
volume customers, we expect to experience a greater concentration of sales among relatively fewer customers.  
As of December 31, 2024, the Company’s order backlog was approximately $155,505,000, compared to $160,805,000 as of December 31, 2023.  
Backlog, as presented here, consists of orders for products for which shipment is scheduled within the following 12 months, subject to our scheduling and 
cancellation policies.  
Over the course of recent years the supply picture for the semiconductor industry generally improved and we have reduced quoted lead time to 22 – 
28 weeks, depending on product family.  In the final quarter of 2024, we increased prices for most products as part of our portfolio management process.
A portion of our revenue in any quarter is, and will continue to be, derived from “turns” volume, representing either orders booked and shipped in 
the same quarter or orders for which customers have requested accelerated delivery from a later quarter to the current quarter.  This volume generally has 
been associated with orders for Brick Products. In 2024, our order backlog remained approximately flat, and consequently our book-to-bill ratio was 
approximately 1.0 during the year.  An influence on turns volume has been our transition to larger OEM customers, which typically schedule large volumes 
for delivery over multiple quarters and frequently reschedule deliveries for either earlier or later shipment.  Average quarterly turns volume was 
approximately 30% of 2024 revenue, approximately 18% of 2023 revenue, and approximately 11% of 2022 revenue.  
 
Competition and Market Characteristics
The competitive characteristics of the markets we serve with Advanced Products and Brick Products can differ significantly.  For example, in the 
higher-performance segments of computing we serve, our Advanced Products most often compete with solutions offered by large integrated device 
manufacturers (“IDMs”), which offer integrated circuits (“ICs”) and semiconductor-based modules.  These IDMs generally offer far broader product 
portfolios, possess far greater global manufacturing and support resources, and have the ability to aggressively price their products to defend market share.  
Accordingly, Advanced Products are positioned as highly differentiated alternatives to commodity solutions for customers seeking high levels of 
performance.  The customers we serve with Advanced Products are in market segments generally characterized by an emphasis on product performance 
differentiation, a compelling TCO, relatively extended and highly competitive design cycles, and product life cycles of generally less than three years.   In 
contrast, the Brick Products competitive landscape is relatively fragmented, with large-scale, low-cost global suppliers of commodity solutions and many 
smaller manufacturers focused on specialized products or narrowly defined market segments or geographies. The market segments we serve with Brick 
Products, typically through sales representatives and distribution partners, generally are characterized by relatively short design cycles, relatively long (i.e., 
greater than three years) product life cycles, and, given the maturity of many market segments and applications, degrees of commoditization and price 
competition. As such, Brick Products are positioned with an emphasis on mass customization, through which we offer products with specific features and 
performance profiles typically not available from catalog-oriented competitors.    
The size and growth characteristics of the markets we serve with Advanced Products and Brick Products also can differ significantly, and the range 
and quality of market data is problematic, making summary statements about these markets challenging.  We believe our Advanced Products generally 
compete with power modules and power ICs developed and manufactured by IDMs and other fabless vendors of power semiconductors.  We believe our 
Brick Products generally compete with similarly integrated switching power supply products developed and manufactured by large global competitors and 
a fragmented group of small regional competitors.  The switching power supply market can be segmented by product type (i.e., DC-DC converters, AC-DC 
converters, and DC-AC inverters), by output power levels, and by numerous vertical markets (i.e., industry-specific applications).  
For 2024, exports to China and Hong Kong were approximately $45,199,000, representing approximately 12.6% of total revenue and an 
approximately 36.8% decrease compared to the 2023 total of approximately $71,554,000.  We believe this decreased volume was primarily associated with 
a softer market in this region driving lower demand for our products.  Current exports to China and Hong Kong are heavily oriented toward Brick Products 
for industrial and rail applications, as well as certain aerospace and defense electronics applications permitted under U.S. export control regulations (our 
products are designated EAR99 commodities under the Export Administration Regulations of the U.S. Department of Commerce and are not subject to 
export licenses).  

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Despite our minor share in the overall merchant market and the competitive presence of numerous, far larger vendors in the market segments we 
serve with both Advanced Products and Brick Products, we believe we maintain an advantageous competitive position in those market segments based on 
our differentiated technology. However, there are numerous competitors across these market segments that have significantly greater engineering, financial, 
manufacturing, and marketing and sales resources, as well as longer operating histories and longer customer relationships than we do. 
 
Marketing and Sales
 
We reach and serve customers through several sales channels: a direct sales force; independent, authorized non-stocking distributors in Europe and 
Asia; and four authorized stocking distributors world-wide: Arrow Electronics, Inc., Digi-Key Corporation, Avnet Electronics, and Mouser Electronics, 
Inc.  All sales channels are supported by regional TSCs, each offering application engineering and sales support for our channel partners.  Domestic TSCs 
are located in: Andover, Massachusetts; Lombard, Illinois; and Santa Clara, California.  International TSCs are located in: Beijing, China; Hong Kong, 
China; Shanghai, China; Shenzhen, China; Munich, Germany; Bangalore, India; Milan, Italy; Tokyo, Japan; Seoul, South Korea; Taipei, Taiwan (Republic 
of China); and Camberley, United Kingdom.  Customers do not place purchase orders with TSCs, but do so directly with the Company or with our channel 
partners.   In Japan, customers place purchase orders with authorized distributors or, for certain custom products, VJCL. 
We generally sell our products on the basis of our standard terms and conditions, and we most commonly warrant our products for a period of two 
years.  The warranty period is three years for a range of H Grade, M Grade, and MI Family DC-DC products. 
Because of the technically complex nature of our products and the applications they address, we maintain an extensive staff of Field Applications 
Engineers to support our own sales and customer support activities, as well as those of our channel partners.  Field Application Engineers, based in our 
TSCs, provide direct technical support worldwide by reviewing new applications and technical matters with our channel partners in support of existing and 
potential customers.  Product Development Engineering is located in our Andover headquarters, where our Product Development Engineers support the 
Field Application Engineers assigned to all of our TSCs.
Our direct sales force focuses on higher-volume opportunities involving Advanced Products with global OEMs (and the Original Design 
Manufacturers (“ODMs”) and contract manufacturers serving these OEMs).  Because of the high level of product differentiation and the increasing 
complexity and challenges of customer requirements, we have experienced, and may continue to experience, extended design cycles before production 
orders are received.    
Our web-based resources are an important element of our efforts to interact with and support customers.  Within our website, the Power System 
Designer workspace of tools and references allow engineers to select, architect, and implement power systems using our products.  Our highly 
differentiated WhiteboardTM tool allows users to configure and analyze their own power system designs or those from an extensive library of designs 
addressing a wide range of applications.  Users can modify the operating condition for each component of their design to match the intended application 
and perform efficiency and loss analysis of individual components and the full power system.  We continue to enhance and expand the range and 
capabilities of engineering tools we make available online to customers and prospective customers. 
As stated, our strategy involves maintaining high levels of customer engagement and support for design and engineering.  We incurred 
approximately $49,827,000, $52,938,000, and $49,708,000 in marketing and sales expenses in 2024, 2023, and 2022, respectively, representing 
approximately 13.9%, 13.1%, and 12.5% of revenues in 2024, 2023, and 2022, respectively.  
 
Manufacturing, Quality Assurance, and Supply Chain Management
Our manufacturing facility, consisting of approximately 320,000 square feet, is located in Andover, Massachusetts, where we are headquartered.  In 
this facility, we manufacture Brick Products, with the exception of custom products produced by our Vicor Custom Power and VJCL subsidiaries, and 
Advanced Products, with the exception of certain products manufactured, packaged, and tested by third party wafer foundries and packaging contractors in 
the United States and Asia.  
Our primary manufacturing processes involve steps common to automated assembly of electronics devices.  We also have developed and employ 
proprietary manufacturing processes that contribute to the differentiated performance of our devices, including the innovative electroplating of our SM-
ChiP© modules.

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Product quality and reliability are critical to our success and, as such, we emphasize quality and reliability in our design and manufacturing 
activities.  We follow industry best practices in manufacturing and are compliant with ISO 9001 certification standards (as set forth by the International 
Organization for Standardization).  Our quality assurance practices include rigorous testing and, as necessary, burn-in and temperature cycling (i.e., 
extended operation of a product to confirm performance) of our products using automated equipment.  Incoming components, assemblies, and other parts 
are subjected to several levels of inspection procedures, and we maintain robust data on our raw material inventories in order to support our quality 
assurance procedures.
Components and materials used in our products are purchased from a variety of domestic and international vendors. Certain Advanced Products and 
semiconductor devices used in our production are manufactured by a limited number of wafer foundries, with packaging and test services provided by a 
limited number of third parties.  We rely on these wafer foundries and packaging and test providers for supply continuity of these critical semiconductor 
devices.  
To date, we have not experienced material delays or reduced raw material availability as a result of trade disputes between the U.S. and China, 
including the imposition in 2018 of import tariffs under the provisions of Section 301 of the Trade Act of 1974 (19 U.S.C. § 2411) (“Section 301 Tariffs”) 
on certain Chinese goods imported into the United States.  For the year ended December 31, 2024, costs associated with tariffs totaled approximately 
$4,189,000, a decrease of 47.5% compared to $7,985,000 in costs incurred for the year ended December 31, 2023. For the year ended December 31, 2022, 
costs associated with tariffs totaled approximately $10,201,000. We continue to assess the impact of these costs and are actively evaluating alternative 
sources of raw materials. We also have filed “duty drawback” applications with U.S. Customs and Border Protection for the recovery of tariffs paid on raw 
materials used to produce products we subsequently exported. We recovered $1,669,000, $6,954,000 and $229,000 for the years ended December 31, 2024, 
2023 and 2022, respectively, however, we are not able to estimate the amount or timing of any additional recoveries, and there can be no assurance that 
there will be any additional recoveries. 
 
Intellectual Property
Our competitive positioning has been, and will continue to be, supported by our long-standing commitment to research and development of power 
distribution architectures, power conversion technologies, advanced packaging and manufacturing, and innovative approaches to solving customer 
problems.  Our research and development activities have resulted in important patents protecting our products and enabling technologies, as well as 
proprietary trade secrets associated with our use of certain components and materials of our own design and proprietary manufacturing, packaging, and 
testing processes.  We incurred approximately $68,922,000, $67,857,000, and $60,594,000 in research and development expenses in 2024, 2023, and 2022, 
respectively, representing approximately 19.2%, 16.8%, and 15.2% of revenues in 2024, 2023, and 2022, respectively.  
We believe our intellectual property affords advantages by building fundamental and multilayered barriers to competitive encroachment upon key 
features and performance benefits of our principal product families.  Our patents cover the fundamental switching topologies used to achieve the 
performance attributes of our converter product lines; converter array architectures; product packaging design; product construction; high frequency 
magnetic structures; and automated equipment and methods for circuit and product assembly.
As of December 31, 2024, in the United States, we have been issued 121 patents having expirations scheduled between 2025 and 2040 and have 
filed a number of patent applications which are still pending, many of which are expected to issue as patents in 2025. We have vigorously protected our 
rights under these patents and will continue to do so.  Although we believe patents are an effective way of protecting our technology, there can be no 
assurances our patents will prove to be enforceable in any given jurisdiction. 
In addition to generating revenue from product sales, we seek to license our intellectual property.  In granting licenses, we generally retain the right 
to use our patented technologies and manufacture and sell our products in all licensed geographic areas and fields of use.  Revenues from licensing 
arrangements were approximately $46,595,000, $15,872,000, and $2,801,000 in 2024, 2023, and 2022, respectively, representing approximately 13.0%, 
3.9%, and 0.7% of revenues in 2024, 2023, and 2022, respectively.  
 
Human Capital Management
High-caliber employees are important to achieving Vicor’s mission of providing the highest performance power solutions to meet the requirements 
of the most demanding applications.  In order to maintain leadership in power systems design in a highly competitive employment market, attracting and 
retaining the best team worldwide is critical.  Accordingly, 

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we offer compelling compensation and benefits, foster a culture of innovation in which employees are empowered to do (and are rewarded for) their best 
work, and seek to establish Vicor as a meaningful contributor to the communities in which we operate, further strengthening the bonds between employees 
and the Company.
As of December 31, 2024, we had 1,074 full-time employees, of which 984 were in the U.S. and 90 were in our international locations. As of 
December 31, 2024, we also had 26 part-time temporary employees. None of our employees are represented by a labor union or covered by a collective 
bargaining agreement.
We recruit from colleges and universities, with a focus on specific engineering disciplines.  In collaboration with certain universities, we maintain a 
student “Co-Op” program, whereby qualifying undergraduate and graduate students work at our Andover facilities for one or two semesters, receiving 
course credit towards their graduation.  In recent years, we have had as many as approximately two dozen participants per semester, with a number of 
participants receiving offers of full-time employment.
Our compensation program is designed to attract and reward talented individuals who possess the skills necessary to support our business objectives, 
assist in the achievement of our strategic goals, and create long-term value for our stockholders. We provide employees with compensation packages that 
include a competitive base salary or wage rate and benefits such as life and health (medical, dental, and vision) insurance, supplemental insurance, paid 
time off, paid parental leave, and a 401(k) plan (with Company match).  Generally (and subject to local laws), new employees are awarded non-qualified 
options for the purchase of the Company’s common stock.  Depending on an employee’s role, he or she may be eligible for annual incentive bonuses and 
periodic awards of non-qualified options based on the performance of the Company and that of the employee. We believe a compensation program with 
appropriate long-term incentives aligns employee and stockholder interests in increasing the value of the Company. 
We emphasize and encourage employee development and training. To empower employees to reach their potential, we provide a range of 
development programs and opportunities, including in-house training programs and tuition reimbursement for those pursuing outside certification or 
degrees.
We seek to support the communities in which we operate and believe this commitment contributes to our efforts to attract and retain employees.  We 
also partner with a range of non-profit organizations and have had notable success in our collaboration for over two decades with the Crest Collaborative of 
Andover, MA, a local advocacy agency, in providing enriching employment opportunities for individuals with disabilities.   
 
Available Information
 
We maintain a website with the address www.vicorpower.com and make available free of charge through this website our Annual Reports on Form 
10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, and amendments to these reports filed or furnished pursuant to Section 13(a) or 
15(d) of the Exchange Act, as soon as reasonably practicable after we electronically file such material with, or furnish such material to, the SEC.  We also 
make available on our website our Code of Business Conduct, as well as the charters for the Audit and Compensation Committees of our Board of 
Directors.   
 
While our website sets forth extensive information, including information regarding our products and the applications in which they may be used, 
such information is not a part of, nor incorporated by reference into, this Annual Report on Form 10-K and shall not be deemed “filed” under the Exchange 
Act.
ITEM 1A. RISK FACTORS 
This Annual Report on Form 10-K contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as 
amended, and Section 21E of the Exchange Act.  Actual results could differ materially from those projected in the forward-looking statements as a result 
of, among other factors, the risk factors set forth below.
Operational Risks
Our future operating results are difficult to predict and are subject to fluctuations.
Our operating results, including revenues, gross margins, operating expenses, and net income (loss), have fluctuated on a quarterly and annual basis.  
Our strategic focus on higher volume opportunities with OEMs, ODMs, and contract manufacturers has caused the actions of a relative few such customers 
to disproportionately influence our operating results.  

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Unanticipated delays in purchase orders from, and shipments to, certain large customers have resulted in lower than expected revenue.  Similarly, our 
strategic focus on the development of market-leading technologies and manufacturing processes, often implemented in proprietary semiconductor circuitry, 
materials, and packaging, has exposed the Company to the risks and costs of delays in such development and the use of a relatively few number of 
suppliers of proprietary circuits and materials or providers of proprietary services.
Despite recent profitability trends, we cannot predict if we will maintain sustained profitability.   Our future operating results may be materially 
influenced by a number of factors, many of which are beyond our control, including:
•
changes in demand for our products and for our customers’ end-products incorporating our products, as well as our ability to respond 
efficiently to such changes in demand, including changes in delivery lead times and the volume of product for which orders are accepted and 
the product shipped within an individual quarter;
•
our ability to manage our supply chain, inventory levels, and our own manufacturing capacity or that of third-party partners, particularly in 
the event of delays or cancellation of significant customer orders or in the event of delays or cost increases associated with our supply chain;
•
our ability to effectively coordinate changes in the mix of products we manufacture and sell, while managing our ongoing transition in 
organizational focus and manufacturing infrastructure to Advanced Products from Brick Products;
•
our ability to provide and maintain a high level of sales and engineering support to an increasing number of demanding, high volume 
customers;
•
the ability of our third party suppliers and service subcontractors to provide us sufficient quantities of high quality products, components, 
and/or services on a timely and cost-effective basis;
•
the effectiveness of our ongoing efforts to continuously reduce manufacturing costs per unit and manage operating expenses;
•
our ability to absorb and mitigate the impact of inflation on our operating results; 
•
our ability to utilize our manufacturing facilities and personnel at efficient levels, maintaining sufficient production capacity and necessary 
manufacturing yields;
•
the timing of our new product introductions and our ability to meet customer expectations for timely delivery of fully qualified products;
•
the timing of new product introductions or other competitive actions (e.g., product price reductions) by our competitors;
•
the ability to hire, retain, and motivate qualified employees to meet the demands of our customers;
•
intellectual property disputes including disputes relating to the licensing of our intellectual property;
•
our ability to license our intellectual property;
•
litigation-related costs, which may be significant; 
•
adverse economic conditions in the U.S. and those foreign countries in which we operate, as well as our ability to respond to unanticipated 
developments, such as the imposition of tariffs or trade restrictions;
•
adverse budgetary conditions within the U.S. government, particularly the Department of Defense, which continue to influence spending on 
current and anticipated programs into which we sell or anticipate to sell our products;
•
costs related to compliance with increasing worldwide governance, quality, environmental, and other regulations; 
•
costs and consequences of disruption by third-parties of our global computer network and related resources; and
•
the effects of events outside of our control, including public health emergencies, natural disasters, terrorist activities, political risks, 
international conflicts, information security breaches, communication interruptions, and other force majeure.

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As a result of these and other factors, we cannot assure you we will not experience significant fluctuations in future operating results on a quarterly 
or annual basis.  In addition, if our operating results do not meet the expectations of investors, the market price of our Common Stock may decline.
Global economic and political uncertainties, notably those associated with trade policy, could materially and adversely affect our business and 
consolidated operating results.
For the years ended December 31, 2024, 2023, and 2022, revenues from sales outside the United States were 48.2%, 63.1%, and 67.6%, 
respectively, of our total revenues.  Net revenues from customers in China and Hong Kong, accounted for approximately 12.6% in 2024, approximately 
17.7% in 2023, and approximately 18.8% in 2022 of total net revenues.  We expect international sales, notably in Asia, will continue to be a significant 
component of total sales, since many of the OEMs and ODMs we target as customers are domiciled offshore, and such customers increasingly utilize 
offshore contract manufacturers, and rely upon those contract manufacturers to place orders directly with us.  
To date, we have not experienced material delays or reduced raw material availability as a result of trade disputes between the U.S. and China, 
including the imposition in 2018 of import tariffs under the provisions of Section 301 of the Trade Act of 1974 (19 U.S.C. § 2411) (“Section 301 Tariffs”) 
on certain Chinese goods imported into the United States.  However, the costs of Section 301 Tariffs have had a material impact on our profitability.  For 
the year ended December 31, 2024, Section 301 Tariffs totaled approximately $4,189,000, a decrease of 47.5% compared to $7,985,000 incurred for 2023. 
For the year ended December 31, 2022, costs associated with tariffs totaled approximately $10,201,000. For 2024, 2023 and 2022, Section 301 Tariffs 
totaled approximately 1.2%, 2.0% and 2.6%, respectively, of annual revenue, representing a reduction in our gross profit margin as a percentage of annual 
revenue.
We have filed “duty drawback” applications with U.S. Customs and Border Protection for the recovery of Section 301 Tariffs paid on raw materials 
and components used to produce products we subsequently exported. We recovered $1,669,000 for the year ended December 31, 2024, however, we are 
not able to estimate the amount or timing of any additional recoveries, and there can be no assurance that there will be any additional recoveries. 
Uncertain macroeconomic conditions, extended trade disputes, an evolving and unpredictable tariff environment, export controls, and the relative 
strength of the U.S. Dollar may reduce end-demand for our customers’ products and, in turn, their purchases of our products, thereby reducing our revenues 
and earnings.  In addition, such adverse conditions may, among other things, result in increased price competition for our products, notably in Brick 
Product categories, increased risk of excess and obsolete inventories, increased risk in the collectability of our accounts receivable from our customers, 
increased risk in potential reserves for doubtful accounts and write-offs of accounts receivable, and higher operating costs as a percentage of revenues.  We 
cannot predict the extent and/or impact of the current trade and tariff disputes between the United States and other countries, which adds to the uncertainty 
and risks associated with our business.
Our operating results recently have been influenced by a limited number of customers, and our future results may be similarly influenced.
Since the introduction of our Advanced Products, the Company has derived the majority of its revenue from Advanced Products in any given year 
from either one customer or a limited number of customers, whether through sales directly to the customer(s), indirectly to the customers’ contract 
manufacturers, or through royalties.  This concentration of revenue is a reflection of the relatively early stage of adoption of the Advanced Products and the 
associated technologies and power system architectures, and our targeting of market leading innovators as initial customers. 
Our current sales and marketing efforts are focused primarily on accelerating the adoption of Advanced Products by a diversified customer base, 
across a number of identified market segments.  While we believe we have been successful to date in diversifying our Advanced Products customer base 
beyond early adopters, we cannot assure you our strategy will be successful and further diversification of customers will be achieved, nor can we assure 
you that customers using one generation of our Advanced Products will adopt the next generation. 
We may not be able to procure necessary key components or raw materials, or we may purchase excess raw material inventory or unusable 
inventory, which increases the risk of reserve charges to reduce the value of any inventory deemed excess or obsolete, thereby reducing our 
profitability.
The power systems industry, and the electronics industry as a whole, can be subject to pronounced, lengthy business cycles and otherwise subject to 
sudden and sharp changes in demand.  Our success, in part, is dependent on our ability to forecast and procure inventories of components and materials to 
match production schedules and customer delivery 

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requirements.  Many of our products require raw materials supplied by a limited number of vendors and, in some instances, a single vendor.  During certain 
periods, key components or materials required to build our products may become unavailable in the timeframe required for us to meet our customers’ 
needs.  Our inability to secure sufficient raw materials to manufacture products for our customers has reduced, in the past, our revenue and profitability and 
could do so again. Over the course of the last few years, there have been circumstances where supply disruptions have impacted our results.
We may choose, and have chosen, to mitigate our inventory risks by increasing the levels of inventory for certain components and materials.  Such 
increased inventory levels may increase the potential risk for excess or obsolete inventories, should our forecasts fail to materialize or if there are negative 
factors impacting our customers’ end markets, leading to order cancellation.  If we identify excess inventory or determine certain inventory is obsolete (i.e., 
unusable), we likely will record additional inventory reserves (i.e., expenses representing the write-off of the excess or obsolete inventory), which could 
have an adverse effect on our gross margins and on our operating results.
We rely on third-party vendors and subcontractors for supply of components, assemblies, and services and, therefore, cannot control the availability 
or quality of such components, assemblies, and services.
We depend on third-party vendors and subcontractors to supply components, assemblies, and services used to manufacture our products, some of 
which are supplied by a single vendor.  In the past, we have experienced shortages of certain semiconductor components and delays in service delivery, 
have incurred additional and unexpected costs to address the shortages and delays, and have experienced our own delays in production and shipping.  
While these supply challenges have recently abated, as supply chains loosened up following the pandemic-related shortages and delays, they nonetheless 
remain risks to our business going forward as the global environment and supply chains are buffeted by changing geopolitical forces.           
If suppliers or subcontractors cannot provide their products or services on time or to our specifications, we may not be able to meet the demand for 
our products and our delivery times may be negatively affected.  In addition, we cannot directly control the quality of the products and services provided by 
third parties.  In order to expand revenue, we likely will need to identify and qualify new suppliers and subcontractors to supplant or replace existing 
suppliers and subcontractors, which may be a time-consuming and expensive process. In addition, any qualification of new suppliers may require 
customers of our products utilizing products and services from new suppliers and service providers to undergo a re-qualification process. Such 
circumstances likely would lead to disruptions in our production, increased manufacturing costs, delays in shipping to our customers, and/or increases in 
prices paid to third parties for products and services. 
Extended interruption of production at our manufacturing facility in Andover, Massachusetts, or a failure to achieve anticipated efficiencies could 
materially reduce our revenue, increase our costs, and, potentially, negatively impact our customers.
The majority of our power components and power systems, whether for direct sale to customers or for sale to our subsidiaries for incorporation into 
their respective products, are manufactured in our Andover facility.  
Substantial damage to our manufacturing facility due to fire, natural disaster, power loss, or other events, could interrupt manufacturing, 
contributing to lengthy shipment delays that could have a negative impact on customers and, in turn, our customer relationships.  While we have never 
experienced any meaningful interruption of manufacturing in our history, any prolonged inability to utilize all or a significant portion of our Andover 
facility could have a material adverse effect on our results of operations.
We have been making and will continue to make capital investments for the expansion of manufacturing capacity for the production of Advanced 
Products at our Andover facility. Over the last few years, as part of the expansion of our Andover facility, we brought in-house the complex electroplating 
operation previously outsourced to a third-party partner. In addition, work is underway to bring in-house an additional final step associated with the 
manufacture of power modules, which step is now conducted by a subcontractor at the subcontractor’s facilities.  Once this additional manufacturing step 
has been completed, we may not achieve the anticipated production volumes and operating efficiencies. As we qualify equipment and bring production 
online, any delay in achieving anticipated operating efficiencies associated with added capacity may cause manufacturing costs to be higher than expected 
for some period of time, thereby potentially negatively influencing our operating and financial results.

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Disruption of our information technology infrastructure could adversely affect our business.
We depend heavily on our computing and communications infrastructure to achieve our business objectives, particularly for our financial and 
operational record keeping, our computer-integrated manufacturing processes controlling all aspects of our operations in our manufacturing facility in 
Andover, Massachusetts, our public website, and our email communications.  We also rely on trusted third parties to provide certain infrastructure support 
services to us.  If we or a third party service provider encounter a problem that impairs this infrastructure, the resulting disruption could impede the 
accuracy and timeliness of our financial reporting processes, and our ability to record or process customer orders, manufacture, and ship in a timely 
manner, or otherwise carry on business in the normal course.  Our image and reputation also could be negatively affected by such circumstances.  
Additionally, we could incur material liabilities associated with the  harm such impairment and disruption of our infrastructure may have on third parties 
including those associated with the unintentional release of confidential information and or sensitive data.  While we carry business interruption insurance 
to offset financial losses from such an interruption, and cyber-risk insurance to address potential liabilities from such circumstances, such insurance may be 
insufficient to compensate us for the potentially significant costs or liabilities incurred.  Any such events, if prolonged, could have a material and adverse 
effect on our operating results and financial condition.
On January 1, 2025, Vicor converted from a legacy enterprise resource planning (“ERP”) system to a modern ERP system. While this system 
change is a technology upgrade, we may not be able to successfully implement the ERP system without delays related to resource constraints or challenges 
with the design or testing phases of the implementation. Inefficiencies in our financial reporting processes due to the conversion to a new ERP system 
could adversely affect our ability to produce accurate financial statements on a timely basis until the new ERP system and processes have matured. 
Additionally, the effectiveness of our internal control over financial reporting could be adversely affected if the new ERP system is not successfully 
implemented. If we are not able to effectively integrate the new ERP system, on the anticipated timeline or at all, our operating results and financial 
condition could be materially and adversely affected. 
Our systems are designed to protect us from network security incidents and associated disruptions.  However, we remain vulnerable to computer 
viruses and related software-based challenges to the integrity of our systems, unauthorized or illegal break-ins, or malicious network hacking, equipment or 
software sabotage, acts of vandalism to our systems by third parties, and, in the extreme, forms of cyber-terrorism.  
The Company provides confidential information to third party business partners and/or receives confidential information from third party business 
partners in certain circumstances, when doing so is necessary to conduct business, particularly with departments of agencies of the U.S. Government.  
While we employ confidentiality agreements to protect other sensitive information (i.e., information not considered controlled unclassified information), 
our own security measures or those of our third party service providers may not be sufficient to protect such information in the event the computing 
infrastructure of these third party business partners is compromised. Security incidents involving our computing and communications infrastructure or that 
of a third party business partner or service provider could result in the misappropriation or unauthorized release of confidential information belonging to us 
or to our employees, partners, customers or suppliers, which could result in an interruption to our operations, result in a violation of privacy or other laws, 
expose us to a risk of litigation, or damage our reputation, any of which could have a material and adverse effect on our operating results and financial 
condition.  
We may face legal claims and litigation from product warranty or other claims that could be costly to resolve and could impact our business.
We have in the past and may in the future encounter legal action from customers, vendors, or others concerning product warranty or other claims.  
We generally offer a two-year warranty from the date title passes from us for all of our standard products.  The warranty period is three years for a range of 
H Grade, M Grade and MI Family DC-DC legacy products.  
We invest significant resources in the testing of our products; however, if any of our products contain defects, we may be required to incur 
additional development and remediation costs, pursuant to our warranty policies.  These issues may divert our technical and other resources from other 
product development efforts and could result in claims against us by our customers or others, including liability for costs associated with product returns, 
which may adversely influence our operating results.  If any of our products contain defects, or have reliability, quality, or compatibility problems, the 
Company’s reputation may be damaged, which could make it more difficult for us to sell our products to existing and prospective customers and could 
adversely affect our operating results. 

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Our ability to successfully implement our business strategy may be limited if we do not retain our key personnel and attract and retain skilled and 
experienced personnel.
Our success depends on our ability to retain the services of our executive officers.  The loss of one or more members of senior management could 
materially adversely influence our business and financial results.  In particular, we are dependent on the services of Dr. Vinciarelli, our founder, Chairman 
of the Board, Chief Executive Officer, and President.  The loss of the services of Dr. Vinciarelli could have a material adverse effect on our development of 
new products and on our business and results of operations. In addition, our research and development and marketing and sales activities depend on highly 
skilled engineers and other personnel with technical skills, who are in high demand and are difficult to replace.  Our continued operations and growth 
depend on our ability to attract and retain skilled and experienced personnel in a very competitive employment market.  If we are unable to attract and 
retain such employees, our ability to successfully implement our business strategy may be harmed.  
Our operations could be affected by the complex laws, rules and regulations to which our business is subject, and political and other actions may 
adversely impact our business.
We are subject to laws and regulations domestically and worldwide, affecting our operations in areas including, but not limited to, intellectual 
property ownership and infringement; taxes; import and export requirements and tariffs; anti-corruption; business acquisitions; foreign exchange controls 
and cash repatriation restrictions; data privacy requirements; employment; product regulations; cybersecurity; environmental, health, and safety 
requirements; and climate change. Compliance with such requirements can be onerous and expensive and may impact our business operations negatively. 
Should any of these laws, rules and regulations be amended or expanded, or new ones enacted, we could incur materially greater compliance costs and/or 
restrictions on our ability to manufacture our products and operate our business.
Government actions, including trade protection and national security policies of U.S. and foreign government bodies, such as tariffs, import or 
export regulations, including deemed export restrictions, trade and economic sanctions, decrees, quotas or other trade barriers and restrictions could affect 
our ability or the ability of our customers and end users to sell products in certain countries and thereby have a material adverse effect on our business, 
revenue and results of operations. In recent years, the U.S. government has continued to expand the number of foreign entities on the Entity List (a 
restricted party list that imposes additional licensing requirements on shipments to listed parties). These export controls are, in part, intended to restrict the 
ability of the People’s Republic of China to obtain advanced computing chips, develop and maintain supercomputers, and manufacture advanced 
semiconductors. The implementation, interpretation and impact on our business of these rules and other regulatory actions taken by the U.S. government is 
uncertain and evolving, and these rules, other regulatory actions or changes, and other actions taken by the governments of either the U.S. or China, or 
both, that have occurred and may occur in the future could materially and adversely affect our business, revenue and results of operations.
While we have policies and procedures in place to ensure compliance with sanctions and trade restrictions and other applicable laws, our employees, 
contractors, partners, and agents may take actions in violation of such policies and applicable law, for which we may be ultimately held responsible. 
Intentional and unintentional violations of these laws can result in fines and penalties; criminal sanctions against us, our officers, or our employees; 
prohibitions on the conduct of our business; and damage to our reputation, any of which could have a material and adverse impact on our business, 
operating results and financial condition.
Competitive Risks
We compete with many companies possessing far greater resources.
Some of our competitors have far greater financial, manufacturing, technical, and sales and marketing resources than we possess or have access to.  
Our Brick Products compete with those products offered by domestic and foreign manufacturers of integrated power supplies and related power conversion 
components.  With our Advanced Product lines, we compete with global IDMs and fabless developers of semiconductor-based power management 
modules and power management ICs. These competitors have far larger organizations and broader semiconductor-based product lines.  Competition is 
generally based on product performance, design flexibility (i.e., ease of use), product price, and product availability, but with the relative importance of 
these factors varying among products, markets, and customers.  
Existing or new competitors may develop products or technologies that more effectively address the demands of our customers and markets with 
enhanced performance, features and functionality, or lower cost.  Larger competitors frequently seek to maintain market share and protect customer 
relationships through heavily-discounted pricing, which we may not be able to match.  If we fail to develop and commercialize leading-edge technologies 
and products that are cost effective and maintain high standards of quality, and introduce them to the market on a timely basis, our competitive position and 
results of operations could be materially adversely affected.

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Our future success depends upon our ability to develop and market differentiated, leading-edge power conversion products for larger customers, 
potentially contributing to lengthy product development and sales cycles that may result in significant expenditures before revenues are generated.  
Our future operating results are dependent on the growth in such customers’ businesses and on our ability to profitably develop and deliver 
products meeting customer requirements.
The power system industry and the industries in which many of our customers operate are characterized by intense competition, rapid technological 
change, quickened product obsolescence, and price erosion for mature products, each of which could have an adverse effect on our results of operations.  
We are following a strategy based on the development of differentiated Advanced Products addressing what we believe to be the long-term limitations of 
traditional power architectures, while at the same time sustaining sales and profitability of our well-established Brick Products.  The development of new, 
innovative products is often a complex, time-consuming, and costly process involving significant investment in research and development, with no 
assurance of return on investment.  Although we have introduced many Advanced Products over recent years, there can be no assurance we will be able to 
continue to develop and introduce new and improved products and power system concepts in a timely or efficient manner.  Similarly, there can be no 
assurance recently introduced or to be developed products will achieve customer acceptance.  
Our future success depends substantially upon further customer acceptance of our innovative Advanced Products including our Power-on-Package 
concept for the computing market and Advanced Products supporting the electrification of automobiles.    As we have been in the early stages of market 
penetration for these and other Advanced Products, we have experienced lengthy periods during which we have focused our product development efforts 
on the specific requirements of a limited number of large customers, followed by further periods of delay before meaningful purchase orders are received. 
These lengthy development and sales cycle times increase the possibility a customer may decide to cancel or change product plans, which could reduce or 
eliminate our sales to that customer.  As a result, we may incur significant product development expenses, as well as significant sales and marketing 
expenses, before we generate the related revenues for these products.  Furthermore, we may never generate the anticipated revenues from a product after 
incurring such expenses if our customer cancels or changes its product plans. 
We have continued our expansion of a dedicated sales effort to penetrate the automotive market with our Advanced Products, notably in the 
electrification of passenger automobiles.  Our Power Component Design Methodology provides conversion solutions for 800V, 400V, and 48V within 
advanced electric vehicles.  The automotive market is dominated by relatively few global OEMs and “tiers” of well-established suppliers.  Penetrating this 
market will be challenging and we may not be successful in doing so.  
We continue to focus our go-to-market strategy on larger opportunities with global OEMs, ODMs, and contract manufacturers.  Our growth is 
therefore dependent on: the pace at which these OEMs and ODMs develop their own new products; the acceptance of our Advanced Products by these 
OEMs and ODMs; and the success of the customers’ products incorporating our Advanced Products.  If we fail to anticipate changes in our customers’ 
businesses and their changing product needs or do not successfully identify and enter new markets, our results of operations and financial position could be 
negatively impacted. 
We cannot offer any assurance the markets we currently serve will grow in the future, our Advanced Products or Brick Products will meet respective 
market requirements, or we can maintain adequate gross margins or operating profits in these markets.  
Intellectual Property Risks
We may be unable to adequately protect our proprietary rights, which may limit our ability to compete effectively.
We operate in an industry in which the ability to compete depends on the development or acquisition of proprietary technologies that must be 
protected to preserve the exclusive use of such technologies.  We devote substantial resources to establish and protect our patents and proprietary rights, 
and we rely on patent and intellectual property law to protect such rights.  This protection, however, may not prevent competitors from independently 
developing products similar or superior to our products.  We may be unable to protect or enforce current patents, may rely on unpatented technology that 
competitors could restrict or replicate, or may be unable to acquire patents in the future, all of which may have a material adverse effect on our competitive 
position.  In addition, the intellectual property laws of foreign countries may not protect our rights to the same extent as those of the United States.  We 
have been defending and may need to continue to defend or challenge patents.  We have incurred and expect to incur significant financial costs in the 
defense of our patented technologies and have devoted 

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and expect to devote significant resources to these efforts which, if unsuccessful, may have a material adverse effect on our operating results and financial 
position.
We face intellectual property infringement claims that could be disruptive to operations and costly to resolve and may encounter similar 
infringement claims in the future.
The power supply industry is characterized by vigorous protection and pursuit of intellectual property rights.  We have in the past received and may 
in the future receive communications from third parties asserting that our products or manufacturing processes infringe on a third party’s patent or other 
intellectual property rights.  Such assertions, if publicly disclosed, have in the past inhibited and may in the future inhibit the willingness of potential 
customers to purchase certain of our products.  In the event a third party makes a valid intellectual property claim against us and a license is not available to 
us on commercially reasonable terms, or at all, we could be forced to either redesign or stop production of products incorporating that technology, and our 
business, financial condition and operating results could be materially and adversely affected.  In addition, litigation may be necessary to defend us against 
claims of infringement, and this litigation could be costly, extend over a lengthy period of time, and divert the attention of key personnel.  An adverse 
outcome in these types of matters could have a material adverse impact on our business, operating results and financial condition.
Please see Note 16 – Commitments and Contingencies, to the Consolidated Financial Statements for information regarding current litigation related 
to our intellectual property.
Any expenses or liability resulting from the outcome of litigation could adversely influence our operating results and financial condition. 
From time to time, we may be subject to claims or litigation, including intellectual property litigation as described elsewhere in this Annual Report 
on Form 10-K. Any such claims or litigation may be time-consuming and costly, divert management resources, require us to change our products, or have 
other adverse effects on our business. Any of the foregoing could have a material adverse effect on our operating results and could require us to pay 
significant monetary damages. 
The outcomes of legal proceedings and claims brought against us are subject to significant uncertainty. An estimated loss from a loss contingency 
such as a legal proceeding or claim is accrued by a charge to income if it is considered probable an asset has been impaired or a liability has been incurred 
and the amount of the loss can be reasonably estimated. Disclosure of a contingency is required if there is at least a reasonable possibility that a loss has 
been incurred. In determining whether a loss should be accrued, we evaluate, among other factors, the degree of probability of an unfavorable outcome and 
the ability to make a reasonable estimate of the amount of loss. Changes in these factors could materially impact our financial statements. 
Please see Note 16 – Commitments and Contingencies, to the Consolidated Financial Statements for information regarding current litigation related 
to our intellectual property.
Regulatory Risks
If we fail to maintain an effective system of internal controls over financial reporting or discover material weaknesses in our internal controls over 
financial reporting, we may not be able to report our financial results accurately or timely or detect fraud, which could have a material adverse 
effect on our business.
An effective internal control environment is necessary for us to produce reliable financial reports and is an important part of our effort to prevent 
financial fraud.  Section 404 of the Sarbanes-Oxley Act of 2002 (“SOX”) requires our management to report on, and our independent registered public 
accounting firm to attest to, the effectiveness of our internal control over financial reporting.  
We have an ongoing program to perform the system and process evaluation and testing necessary to comply with the requirements of SOX and to 
continuously improve and, when necessary, remediate internal controls over financial reporting.  
While management evaluates the effectiveness of our internal controls on a regular basis, these controls may not always be effective.  There are 
inherent limitations on the effectiveness of internal controls, including collusion, management override, and failure in human judgment. In addition, control 
procedures are designed to reduce rather than eliminate business risks.  In the event our Chief Executive Officer or Chief Financial Officer, our certifying 
officers under SOX, or our independent registered public accounting firm determines our internal controls over financial reporting are not effective as 
defined under Section 404, we may be unable to produce reliable financial reports or prevent fraud, which could materially 

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harm our business.  In addition, we may be subject to sanctions or investigation by government authorities or self-regulatory organizations, such as the 
SEC, the Financial Industry Regulatory Authority, or The NASDAQ Stock Market LLC.  Any such actions could affect investor perceptions of the 
Company and result in an adverse reaction in the financial markets due to a loss of confidence in the reliability of our financial statements, which could 
cause the market price of our Common Stock to decline or limit our access to capital.
We cannot be certain what changes to the regulatory environment might occur under the new administration. However, if the regulatory 
environment changes in ways that disrupt our business there could be a material and adverse effect on our operations and financial performance. 
 
Risks Related to Share Value
The price of our Common Stock has been volatile and may fluctuate in the future.
Because of the factors set forth above and below, among others, the trading price of our Common Stock has fluctuated and may continue to fluctuate 
significantly:  
•
volatility of the financial markets, notably the equity markets in the U.S.;
•
uncertainty regarding the prospects of domestic and foreign economies, including the impact of volatile currency exchange rates;
•
uncertainty regarding domestic and international political conditions, including tax, trade, and tariff policies;
•
actual or anticipated fluctuations in our operating performance or that of our competitors;
•
the performance and prospects of our major customers, including their adoption of technologies or standards other than those in which we 
specialize;
•
announcements by us or our competitors of significant new products, technical innovations, or litigation;
•
investor perception of the Company and the industry in which we operate;
•
the liquidity of the market for our Common Stock, reflecting a relatively low trading float and relatively low average trading volumes; 
•
the uncertainty of the declaration and payment of future cash dividends on our Common Stock; and
•
the concentration of ownership of our Common Stock by Dr. Vinciarelli, our Chairman of the Board, Chief Executive Officer, and President.
In the past, we have declared and paid cash dividends on our Common Stock.  The payment of dividends is based on the periodic determination by 
our Board of Directors that we have adequate capital to fund anticipated operating requirements and that excess cash is available for distribution to 
stockholders via a dividend.  We have no formal policy regarding dividends and, as such, investors cannot make assumptions regarding the possibility of 
future dividend payments nor the amounts and timing thereof.  As of December 31, 2024, we have no plans to declare or pay a cash dividend.  
The ownership of our Common Stock is concentrated between Dr. Vinciarelli and a limited number of institutional investors.  As of December 31, 
2024, Dr. Vinciarelli was the beneficial owner of 10,021,388 shares of our Common Stock, plus 6,199 shares which Dr. Vinciarelli has the right to acquire 
upon exercise of options to purchase Common Stock within 60 days of December 31, 2024.  He also holds 11,023,648 shares of our unregistered Class B 
Common Stock (which may only be sold or transferred after required conversion, on a one-for-one basis, into registered shares of Common Stock), which 
together with his ownership of Common Stock, represents 47.3% of our total issued and outstanding shares of capital stock.  Accordingly, the market float 
for our Common Stock and average daily trading volumes are relatively small, which may negatively impact investors’ ability to buy or sell shares of our 
Common Stock in a timely manner.  
Dr. Vinciarelli owns 93.9% of the issued and outstanding shares of our Class B Common Stock, which possess 10 votes per share.  Dr. Estia J. 
Eichten, a member of our Board of Directors, owns the majority of the balance of the Class B Common Stock issued and outstanding.  As such, Dr. 
Vinciarelli, controlling in aggregate 79.6% of our outstanding voting securities, has effective control of our governance.

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ITEM 1B. UNRESOLVED STAFF COMMENTS
None.
ITEM 1C. CYBERSECURITY
Our Company has a dedicated team of technology professionals who consistently monitor risks related to cybersecurity. Our Corporate Vice 
President and Chief Information Officer, as well as our Chief Information Security Officer (“CISO”) are responsible for managing our information 
technology (“IT”) security program. Our CISO is a Certified Information Systems Security Professional (CISSP), holds a Masters Degree in Computer 
Information Systems, and has over 20 years of relevant expertise in assessing and managing cybersecurity risks. Their teams are responsible for leading an 
enterprise-wide cyber resilience strategy, policy, standards, architecture, and processes. To identify and address potential information security risks, we use 
a defense-in-depth methodology that employs multiple, redundant defensive measures and outlines actions to take in the event of a security control failure 
or vulnerability exploitation. To protect the Company from cybersecurity threats, we utilize a combination of internal resources and external consultants 
and providers. These consultants and providers provide services such as penetration testing, incident response, and third-party assessments. In addition, we 
use a combination of both proprietary and commercial solutions to proactively manage and mitigate threats to our IT environment and these processes have 
been integrated into the Company’s overall risk management system.  
Our CISO oversees security, including the corporate IT environment, our public cloud presence, and security standards that are used as a framework 
for managing security across our Company. Our CISO is also responsible for security awareness, administering our corporate security training, and 
sponsoring our cybersecurity policy and standards. Our cybersecurity plan is reviewed annually, and our Audit Committee has delegated to the Executive 
Security Incident Response Team which is made up of our Chief Financial Officer, a Board member and senior management representatives in the legal, IT 
and finance functions, oversight of our cybersecurity program.  The Executive Security Incident Response Team receives regular updates directly from our 
CISO and Vicor product security experts from various business and operational areas. We maintain various security certifications across the Company, and 
part of our compliance program includes processes to oversee and identify material risks from cybersecurity threats and include the use of third-party 
service providers to perform regular audits to ensure our security management program remains current.  
Our objective for managing information security and cybersecurity risk is to avoid or minimize the impacts of both internal and external threat 
events and other efforts to penetrate or otherwise compromise the confidentiality, integrity, or availability of our systems. We work to achieve this 
objective by hardening networks and systems against attack, and by diligently managing visibility and monitoring controls within our data and 
communications environment to recognize events and respond appropriately.  
To keep the Executive Security Incident Response Team apprised of the continually shifting landscape, the CISO typically provides quarterly 
updates to the Executive Security Incident Response Team on information security and cybersecurity matters.  The Executive Security Incident Response 
Team maintains oversight of the efforts made to maximize information security and cybersecurity efforts. Potential concerns related to information security 
and cybersecurity will be escalated to the Board of Directors and Audit Committee, as appropriate.  
Our cybersecurity infrastructure undergoes external audits. These efforts demonstrate our commitment to maintaining the highest level of 
cybersecurity protection. Our external third-party providers also evaluate and rank our cybersecurity maturity and coverage as part of their services. To stay 
informed about emerging threats, we regularly consult with external providers and other sources such as government publications and notices.  
Cybersecurity threats, including as a result of any previous cybersecurity incidents, have not materially affected and are not reasonably likely to 
materially affect the Company, including its business strategy, results of operations or financial condition. Notwithstanding the extensive approach we take 
to cybersecurity, we may not be successful in preventing or mitigating a cybersecurity incident that could have a material adverse effect on us. While Vicor 
Corporation maintains cybersecurity insurance, the costs related to cybersecurity threats or disruptions may not be fully insured. See Item 1A. “Risk 
Factors” for a discussion of cybersecurity risks.
ITEM 2. PROPERTIES
Our corporate headquarters building in Andover, Massachusetts, which we own, provides approximately 90,000 square feet of office space for our 
sales, marketing, engineering, and administrative personnel.  We also own a building of approximately 320,000 square feet in Andover, Massachusetts, 
which houses all Massachusetts manufacturing activities.

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We own a single-story industrial building of approximately 31,000 square feet in Sunnyvale, California, which we have leased on a long-term basis 
to a corporate tenant, which has occupied the building since June 2016. The initial term of the lease agreement expired on May 31, 2024 and was extended 
for an additional eighty-four months, commencing June 1, 2024 and ending May 31, 2031.
All other domestic and foreign facilities are leased from third-party lessors on arms’ length terms. We believe our owned and leased facilities are 
adequate for our foreseeable needs.
ITEM 3. LEGAL PROCEEDINGS
See Note 16 – Commitments and Contingencies, to the Consolidated Financial Statements for a complete description of the Company’s legal 
proceedings.
ITEM 4. MINE SAFETY DISCLOSURES
Not Applicable.

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PART II
 
ITEM 5. MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY 
SECURITIES
Our Common Stock is listed on The NASDAQ Stock Market LLC, under the trading symbol “VICR.” Shares of our Class B Common Stock are not 
registered with the Securities and Exchange Commission, are not listed on any exchange nor traded on any market, and are subject to transfer restrictions 
under our Restated Certificate of Incorporation, as amended.
As of February 18, 2025, there were 92 holders of record of our Common Stock and 11 holders of record of our Class B Common Stock. These 
numbers do not reflect persons or entities that hold their shares in nominee or “street name” through various brokerage firms.
We have no formal policy regarding dividends and, as such, investors cannot make assumptions regarding the possibility of future dividend 
payments nor the amounts and timing thereof.  As of December 31, 2024, we have no plans to declare or pay a cash dividend in the foreseeable future.
Issuer Purchases of Equity Securities
In November 2000, our Board of Directors authorized the repurchase of up to $30,000,000 of our Common Stock (the “November 2000 Plan”). In 
July 2024, our Board of Directors authorized the repurchase of up to $100,000,000 of our Common Stock (the “New Repurchase Authorization”). The New 
Repurchase Authorization replaces the November 2000 Plan in its entirety and no further repurchases will be made pursuant to the November 2000 Plan. 
The timing and amounts of Common Stock repurchases pursuant to the New Repurchase Authorization are at the discretion of the Company’s President 
and Chief Executive Officer based upon economic and financial market conditions. The New Repurchase Authorization does not expire.
 
Month of
Fourth Quarter 2024
 
Total
Number of
Shares
Purchased
   
Average Price
Paid per Share
   
Total Number of
Shares Purchased
as Part of Publicly
Announced Plans
or Programs
   
Approximate Dollar
Value of Shares That
May Yet Be Purchased 
Under the Plans or 
Programs
 
October 1 - 31, 2024
   
—    $
—     
—    $
99,502,521 
November 1 - 30, 2024
   
—    $
—     
—    $
99,502,521 
December 1 - 31, 2024
   
—    $
—     
—    $
99,502,521 
Total
   
—    $
—     
—    $
99,502,521 
 
Stockholder Return Performance Graph
The graph set forth below presents the cumulative, five-year stockholder return for each of (i) the Company’s Common Stock, (ii) the Standard & 
Poor’s 500 Index (“S&P 500 Index”), a value-weighted index made up of 500 of the largest, by market capitalization, listed companies, and (iii) the 
Standard & Poor’s SmallCap 600 Index (“S&P SmallCap 600 Index”), a value-weighted index of 600 listed companies with market capitalizations between 
$750,000,000 and $4,600,000,000.
The graph assumes an investment of $100 on December 31, 2019, in each of our Common Stock, the S&P 500 Index, and the S&P SmallCap 600 
Index, and assumes reinvestment of all dividends. The historical information set forth below is not necessarily indicative of future performance.

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Comparison of Five Year Cumulative Return
Among Vicor Corporation, S&P 500 Index, and 
S&P SmallCap 600 Index
 
 
 
 
2019
   
2020
   
2021
   
2022
   
2023
   
2024
 
Vicor Corporation
  $
100.00    $
197.39    $
271.79    $
115.03    $
96.17    $
103.39 
S&P 500 Index
  $
100.00    $
118.40    $
152.39    $
124.79    $
157.59    $
197.02 
S&P SmallCap 600 Index
  $
100.00    $
111.29    $
141.13    $
118.41    $
137.42    $
149.37 
 
Equity Compensation Plan Information
Our equity plan information required by this item is incorporated by reference to the information in Part III, Item 12 of this Annual Report on Form 
10-K.
ITEM 6. [RESERVED]

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ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
 
Overview 
 
A discussion regarding our results of operations for the year ended December 31, 2023, compared to the year ended December 31, 2022, was included in 
the Company’s Annual Report on Form 10-K for the year ended December 31, 2023, on pages 27-29 under Part II, Item 7, “Management’s Discussion and 
Analysis of Financial Condition and Results of Operations”, which was filed with the SEC on February 28, 2024.
We design, develop, manufacture, and market modular power components and power systems for converting electrical power for use in electrically-
powered devices. Our competitive position is supported by innovations in product design and achievements in product performance, largely enabled by our 
focus on the research and development of advanced technologies and processes, often implemented in proprietary semiconductor circuitry, materials, and 
packaging. Many of our products incorporate patented or proprietary implementations of high-frequency switching topologies enabling power system 
solutions that are more efficient and much smaller than conventional alternatives. Our strategy emphasizes demonstrable product differentiation and a value 
proposition based on competitively superior solution performance, advantageous design flexibility, and a compelling total cost of ownership. While we 
offer a wide range of alternating current (“AC”) and direct current (“DC”) power conversion products, we consider our core competencies to be associated 
with 48V DC distribution, which offers numerous inherent cost and performance advantages over lower distribution voltages. However, we also offer 
products addressing other DC voltage standards (e.g., 380V for power distribution in data centers, 110V for rail applications, 28V for military and avionics 
applications, and 24V for industrial automation).
Based on design, performance, and form factor considerations, as well as the range of evolving applications for which our products are appropriate, 
we categorize our product portfolios as either “Advanced Products” or “Brick Products.” The Advanced Products category consists of our more recently 
introduced products, which are largely used to implement our proprietary Factorized Power Architecture™ (“FPA”), an innovative power distribution 
architecture enabling flexible, rapid power system design using individual components optimized to perform a specific conversion function.
The Brick Products category largely consists of our broad and well-established families of integrated power converters, incorporating multiple 
conversion stages, used in conventional power systems architectures. Given the growth profiles of the markets we serve with our Advanced Products line 
and our Brick Products line, our strategy involves a continuing transition in organizational focus, emphasizing investment in our Advanced Products line 
and targeting high growth market segments with a low-mix, high-volume operational model, while maintaining a profitable business in the mature market 
segments we serve with our Brick Products line with a high-mix, low-volume operational model.
The applications in which our Advanced Products and Brick Products are used are typically in the higher-performance, higher-power segments of 
the market segments we serve. With our Advanced Products, we generally serve large Original Equipment Manufacturers (“OEMs”), Original Design 
Manufacturers (“ODMs”), and their contract manufacturers, with sales currently concentrated in the data center and hyperscaler segments of enterprise 
computing, in which our products are used for power delivery on server motherboards, in server racks, and across datacenter infrastructure. We have 
established a leadership position in the emerging market segment for powering high-performance processors used for acceleration of applications 
associated with artificial intelligence (“AI”). Our customers in the AI market segment include the leading innovators in processor and accelerator design, as 
well as early adopters in cloud computing and high performance computing. We also serve applications in aerospace and aviation, defense electronics, 
satellites, factory automation, instrumentation, test equipment, transportation, telecommunications and networking infrastructure, and vehicles (notably in 
the autonomous driving, electric vehicle, and hybrid vehicle niches of the vehicle segment). With our Brick Products, we generally serve a fragmented base 
of large and small customers, concentrated in aerospace and defense electronics, industrial equipment, instrumentation and test equipment, and 
transportation (notably in rail and heavy equipment applications). With our strategic emphasis on larger, high-volume customers, we expect to experience 
over time a greater concentration of sales, including from intellectual property licensing among relatively fewer customers.
Our quarterly consolidated operating results can be difficult to forecast and have been subject to significant fluctuations. We plan our production and 
inventory levels based on management’s estimates of customer demand, customer forecasts, and other information sources. Customer forecasts, particularly 
those of OEM, ODM, and contract manufacturing customers to which we supply Advanced Products in high volumes, are subject to scheduling changes on 
short notice, contributing to operating inefficiencies and excess costs. In addition, external factors such as supply chain uncertainties, which are often 
associated with the cyclicality of the electronics industry, regional macroeconomic and trade-related circumstances, and force majeure events (most 
recently evidenced by the COVID-19 pandemic), have caused our operating results to vary meaningfully. Supply chain disruptions, including those 
associated with our reliance on outsourced package 

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process steps that are essential in the production of some of our Advanced Products, and those relating, for example, to the procurement of raw material, 
have in the past negatively impacted and may in the future negatively impact our operating results. We have taken steps to mitigate the impact of supply 
chain disruptions by, among other things and in varying degrees, moving outsourced manufacturing steps in-house to the Company, ordering supplies with 
extended lead times, paying higher prices for certain supplies or outsourced production, and expediting deliveries at a cost premium. The resulting impact 
of the steps taken to mitigate supply chain disruptions have, to varying degrees and at different times, reduced our revenue, gross margin, operating profit 
and cash flow and may continue to do so in the future.  Our quarterly gross margin as a percentage of net revenues may vary, depending on production 
volumes, licensing income, average selling prices, average unit costs, the mix of products sold during that quarter, and the level of importation of raw 
materials subject to tariffs. Our quarterly operating margin as a percentage of net revenues also may vary with changes in revenue and product level 
profitability, but our operating costs are largely associated with compensation and related employee costs, which are not subject to sudden or significant 
changes.
 
2024 Financial Highlights
•
Net revenues decreased 11.4% to $359,058,000 for 2024, from $405,059,000 for 2023. Net revenues for Advanced Products for 2024 
decreased compared to 2023, primarily due to continued softness in underpenetrated markets, partially offset by increased royalty revenue 
associated with intellectual property licensing. The decrease in net revenues for Brick Products was primarily due to reduced market demand. 
•
Export sales, as a percentage of total revenues, represented approximately 48.2% in 2024 and 63.1% in 2023.
•
Gross margin decreased to $183,998,000 for 2024, from $204,929,000 for 2023. Gross margin, as a percentage of net revenues increased to 
51.2% for 2024 from 50.6% for 2023. The decrease in gross margin dollars was primarily the result of lower sales volume in 2024, with the 
increase in gross margin percentage primarily attributable to higher royalty revenue and improved production efficiencies compared to 2023 
along with certain reductions in supply chain costs.
•
Backlog, representing the total of orders received for products for which shipment is scheduled within the next 12 months, was 
approximately $155,505,000 at the end of 2024, as compared to $160,805,000 at the end of 2023. 
•
Operating expenses for 2024 increased $31,737,000, or 20.7%, to $185,308,000 from $153,571,000 for 2023. Litigation-contingency expense 
was $19,500,000 for 2024, which related to the litigation with SynQor, Inc. ("SynQor"), as compared to $0 for 2023. See Note 16 to the 
Consolidated Financial Statements for additional information regarding the SynQor litigation-contingency expense.
•
We reported net income for 2024 of $6,129,000, or $0.14 per diluted share, compared to net income of $53,595,000, or $1.19 per diluted 
share, for 2023.  
•
In 2024, as a result of a full year of activities in our expanded manufacturing facility and the related capital equipment being placed in service 
during the year, depreciation and amortization totaled $18,626,000, and capital expenditures were $23,602,000, compared to $17,240,000 
and $33,452,000, respectively, for 2023. 
•
Inventories decreased by approximately $547,000, or 0.5%, to $106,032,000 at the end of 2024, as compared to $106,579,000 at the end of 
2023.
The following table sets forth certain items of selected consolidated financial information as a percentage of net revenues for the years ended 
December 31, 2024, 2023, and 2022.  This table and the subsequent discussion should be read in conjunction with the Consolidated Financial Statements 
and related notes contained elsewhere in this report.
 
 
 
Year Ended December 31,
 
 
 
2024
   
2023
   
2022
 
Net revenues
   
100.0%    
100.0%    
100.0%
Gross margin
   
51.2%    
50.6%    
45.2%
Selling, general and administrative expenses
   
27.0%    
21.2%    
21.6%
Research and development expenses
   
19.2%    
16.8%    
15.2%
Income before income taxes
   
2.9%    
14.9%    
7.2%
 
Critical Accounting Policies and Estimates
 

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Management’s Discussion and Analysis of Financial Condition and Results of Operations is based upon our Consolidated Financial Statements, 
which have been prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”).  The preparation of these 
financial statements requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues, expenses, and 
related disclosures of contingent assets and liabilities.  On an ongoing basis, we evaluate our estimates and assumptions, and our associated judgments, 
including those related to inventories, income taxes, contingencies, and litigation.  We base our estimates, assumptions, and judgments on historical 
experience, knowledge of current conditions, and on various other factors we believe to be reasonable under the circumstances, the results of which form 
the basis for making judgments about the carrying value 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 also have other policies we consider key accounting policies (See Note 2 to the 
Consolidated Financial Statements – Significant Accounting Policies –Impact of recently issued accounting standards). However, the application of these 
other policies does not require us to make significant estimates and assumptions difficult to support quantitatively.
 
Inventories
 
We employ a variety of methodologies to evaluate inventory that is estimated to be excess, obsolete or unmarketable, in order to write down that 
inventory to net realizable value. Our estimation process for assessing net realizable value is based upon forecasted future usage which we derive based on 
backlog, historical consumption, and expected market conditions. For both our Brick and Advanced Product lines, the methodology used compares on-hand 
quantities to forecasted usage and historical consumption, such that amounts of inventory on hand in excess of management’s estimate of expected future 
utility, are fully reserved. While we have used our best efforts and believe we have used the best available information to estimate future demand, due to 
uncertainty in the economy and our business and the inherent difficulty in forecasting future usage, it is possible actual demand for our products will differ 
from our estimates. If actual future demand or market conditions are less favorable than those projected by management, additional inventory reserves for 
existing inventories may need to be recorded in future periods. 
 
Evaluation of the Realizability of Deferred Tax Assets 
 
Significant management judgment is required in determining whether deferred tax assets will be realized in full or in part.  We assess the need for a 
valuation allowance on a quarterly basis.  We record a valuation allowance to reduce our deferred tax assets to the amount we believe is more likely than 
not to be realized. In assessing the need for a valuation allowance, we consider all positive and negative evidence, including scheduled reversals of deferred 
tax liabilities, projected future taxable income, tax planning strategies, and past financial performance.  Despite recent positive operating results, we face 
uncertainties in forecasting our operating results due to the unpredictability of customer orders in certain markets, product transitions, new program 
introductions and adoption times of new technology offerings.  This operating uncertainty also makes it difficult to predict the availability and utilization of 
tax benefits over the next several years. As a result, management has concluded, as of December 31, 2024, it is more likely than not our net domestic 
deferred tax assets will not be realized, and a full valuation allowance against all net domestic deferred tax assets is still warranted as of December 31, 
2024.   The valuation allowance against these deferred tax assets may require adjustment in the future based on changes in the mix of temporary 
differences, changes in tax laws, and operating performance. If the positive operating results continue, and our concerns about the unpredictability of 
customer orders in certain markets, product transitions, new program introductions and adoption times of new technology offerings are resolved, and we 
believe future taxable income can be more reliably forecasted, we may release all or a portion of the valuation allowance in the near-term. Certain state tax 
credits, though, will likely never be released by the valuation allowance. If and when we determine the valuation allowance should be released (i.e., 
reduced), the adjustment would result in a tax benefit reported in that period’s Consolidated Statements of Operations, the effect of which would be an 
increase in reported net income.
 
The amount of any such tax benefit associated with release of our valuation allowance in a particular quarter may be material.
 
New Accounting Pronouncements
 
From time to time, new accounting pronouncements are issued by the Financial Accounting Standards Board (“FASB”) that we adopt as of the 
specified effective date.  Unless otherwise discussed, we believe the impact of recently issued accounting standards will not have a material impact on our 
future financial condition and results of operations.  See Note 2 – Significant Accounting Policies – Impact of recently issued accounting standards, to the 
Consolidated Financial Statements for a description of recently issued and adopted accounting pronouncements, including the dates of adoption and 
expected impact on our financial position and results of operations.  

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Other new pronouncements issued but not effective until after December 31, 2024 are not expected to have a material impact on our consolidated 
financial statements.  
Year ended December 31, 2024 compared to Year ended December 31, 2023
 
Consolidated net revenues for 2024 were $359,058,000, a decrease of $46,001,000, or 11.4%, as compared to $405,059,000 for 2023.
Net revenues, by product line, for the years ended December 31 were as follows (dollars in thousands):
 
 
 
 
   
 
   
Decrease
 
 
 
2024
   
2023
   
$
   
%
 
Advanced Products including Royalty Revenue
  $
197,329    $
223,893    $
(26,564)    
(11.9)%
Brick Products
   
161,729     
181,166     
(19,437)    
(10.7)%
Total
  $
359,058    $
405,059    $
(46,001)    
(11.4)%
 
The decrease in net revenues for Advanced Products was primarily due to continued softness in underpenetrated markets, partially offset by 
increased royalty revenue. The decrease in net revenues for Brick Products was primarily due to reduced market demand. 
Gross margin for the twelve months ended December 31, 2024 decreased $20,931,000, or 10.2%, to $183,998,000 from $204,929,000 for the twelve 
months ended December 31, 2023. Gross margin, as a percentage of net revenues, increased to 51.2% for the twelve-month period ended December 31, 
2024, as compared to 50.6% for the twelve-month period ended December 31, 2023. The decrease in gross margin dollars was primarily the result of lower 
sales volume in 2024, with the increase in gross margin percentage primarily attributable to higher royalty revenue and improved production efficiencies 
compared to 2023 along with certain reductions in supply chain costs, including a reduction of $1,958,000 in outsourced manufacturing costs partially 
offset by incremental costs of bringing production in-house for certain Advanced Products, offset by slightly unfavorable sales mix and an increase in 
freight-in and tariff spending of $953,000 (net of approximately $1,669,000 in duty drawback recovery in 2024 and $6,954,000 in duty drawback recovery 
in 2023 of previously paid tariffs).
Selling, general, and administrative expenses were $96,886,000 for 2024, an increase of $11,172,000, or 13.0%, as compared to $85,714,000 for 
2023.  As a percentage of net revenues, selling, general, and administrative expenses increased to 27.0% in 2024 from 21.2% in 2023.
The components of the $11,172,000 increase in selling, general, and administrative expenses were as follows (dollars in thousands):
 
 
 
Increase (decrease)
 
Legal fees
  $
10,854     
130.3%  
(1)
Compensation
   
1,575     
3.2%  
(2)
Litigation, other
   
992     
100.0%  
(3)
Information technology expense
   
289     
11.3%  
(4)
Professional services fees
   
285     
10.7%  
(5)
Consultants
   
220     
5.5%  
(6)
Commissions
   
(3,483)    
(94.5)%  
(7)
Other, net
   
440     
2.9%  
 
 
  $
11,172     
13.0%  
 
 

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(1)
Increase primarily attributable to an increase in activity related to corporate legal matters, including the assertion of our intellectual property rights.
(2)
Increase primarily attributable to annual compensation adjustments in May 2024 and higher stock-based compensation expense associated with stock 
options awarded in May 2024.
(3)
Increase primarily attributable to an increase in post-judgment interest relating to the SynQor litigation-contingency accrual.
(4)
Increase primarily attributable to an increase in computer software services relating to new internal-use software implementation.
(5)
Increase primarily attributable to an increase in audit and tax fees.
(6)
Increase primarily attributable to an increase in the use of consultants and outside services relating to new internal-use software implementation.
(7)
Decrease primarily attributable to the fact that the Company no longer uses outside sales representatives.
Research and development expenses increased $1,065,000, or 1.6%, to $68,922,000 in 2024 from $67,857,000 in 2023.  As a percentage of net 
revenues, research and development expenses increased to 19.2% in 2024 from 16.8% in 2023. 
The components of the $1,065,000 increase in research and development expenses were as follows (dollars in thousands):
 
 
 
Increase (decrease)
 
Compensation
  $
1,417     
3.3%   (1)
Overhead absorption
   
1,194     
56.2%   (2)
Waste disposal
   
871     
100.0%   (3)
Facilities allocations
   
366     
11.9%   (4)
Depreciation and amortization
   
366     
13.1%   (5)
Supplies
   
(1,091)    
(41.9)%   (6)
Project and pre-production materials
   
(2,175)    
(17.8)%   (7)
Other, net
   
117     
2.0%
   
 
  $
1,065     
1.6%
   
 
(1)
Increase primarily attributable to annual compensation adjustments in May 2024 and higher stock-based compensation expense associated with stock 
options awarded in May 2024.
(2)
Increase primarily attributable to a decrease in research and development personnel incurring time on production activities, compared to research and 
development activities.
(3)
Increase primarily attributable to an increase in waste disposal activities of Advanced Products related to improving production process capabilities.
(4)
Increase primarily attributable to an increase in utilities and building maintenance expenses.
(5)
Increase attributable to net additions of furniture and fixtures and capitalization of building improvements.
(6)
Decrease in engineering supplies.
(7)
Decrease primarily attributable to decreased prototype development costs for Advanced Products.
Litigation-contingency expense was $19,500,000 for 2024, which related to the SynQor litigation, as compared to $0 for 2023. See Note 16 to the 
Consolidated Financial Statements for additional information regarding the SynQor litigation-contingency expense.
The significant changes in the components of "Other income (expense), net" for the years ended December 31 were as follows (in thousands):
 

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Increase
 
 
 
2024
   
2023
   
(decrease)
 
Interest income, net
  $
11,468    $
8,217    $
3,251 
Rental income, net
   
992     
792     
200 
Foreign currency losses, net
   
(622)    
(161)    
(461)
Other, net
   
(41)    
38     
(79)
 
  $
11,797    $
8,886    $
2,911 
 
Our exposure to market risk fluctuations in foreign currency exchange rates relates to the operations of Vicor Japan Company, Ltd. ("VJCL"), for 
which the functional currency is the Japanese Yen, and all other subsidiaries in Europe and Asia, for which the functional currency is the U.S. Dollar. 
These subsidiaries in Europe and Asia experienced more unfavorable foreign currency exchange rate fluctuations in 2024 compared to 2023. In 2024, 
interest income increased due to higher balances of cash and cash equivalents held by the Company.
Income before income taxes was $10,487,000 in 2024, as compared to $60,244,000 in 2023.
The provision for income taxes and the effective income tax rate for the years ended December 31 were as follows (dollars in thousands):
 
 
 
2024
   
2023
 
Provision for income taxes
  $
4,348 
  $
6,644 
Effective income tax rate
   
41.5%    
11.0%
 
The effective tax rates differ from the statutory tax rates for the years ended December 31, 2024 and 2023 primarily due to the Company’s full 
valuation allowance position against net domestic deferred tax assets. The provision for income taxes for the years ended December 31, 2024 and 2023 
included estimated federal, state, and foreign income taxes in jurisdictions in which the Company does not have sufficient tax attributes.    
 
The Company's tax expense and the rate for the year ended December 31, 2024 continues to be negatively impacted by the capitalization of research 
and development expenses under Section 174 in the U.S., which given the Company's performance, is having an outsized impact on the rate by increasing 
the taxable income position, which causes a significant tax expense. This is further compounded by the Company not getting a deferred tax benefit from 
temporary differences due to the full valuation allowance on net domestic deferred tax assets. 
See Note 15 to the Consolidated Financial Statements for disclosure regarding our current assessment of the valuation allowance against all net 
domestic deferred tax assets, and the possible release (i.e., reduction) of the allowance in the future.
We reported net income for the year ended December 31, 2024 of $6,129,000, or $0.14 per diluted share, as compared to $53,595,000, or $1.19 per 
diluted share, for the year ended December 31, 2023.
LIQUIDITY AND CAPITAL RESOURCES
At December 31, 2024, we had $277,273,000 in cash and cash equivalents.  The ratio of current assets to current liabilities was 7.5:1 at December 
31, 2024, as compared to 9.5:1 at December 31, 2023.  Net working capital increased $25,017,000 to $401,214,000 at December 31, 2024 from 
$376,197,000 at December 31, 2023.
The primary working capital changes were due to the following (in thousands):
 

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Increase
(decrease)
 
Cash and cash equivalents
 
$
35,054 
Accounts receivable
 
 
317 
Inventories
 
 
(547)
Other current assets
 
 
7,844 
Accounts payable
 
 
3,363 
Accrued compensation and benefits
 
 
366 
Accrued litigation
 
 
(20,388)
Accrued expenses
 
 
(1,487)
Sales allowances
 
 
1,815 
Short-term lease liabilities
 
 
148 
Income taxes payable
 
 
687 
Short-term deferred revenue and customer prepayments
 
 
(2,155)
 
 
$
25,017 
 
The primary sources of cash for the year ended December 31, 2024 were $50,842,000 of cash generated from operations and $8,490,000 of cash 
received in connection with the exercise of options to purchase our Common Stock awarded under our stock option plans and the issuance of Common 
Stock under our 2017 Employee Stock Purchase Plan. The primary use of cash during the year ended December 31, 2024 was $23,602,000 for the purchase 
of machinery and equipment and internal-use software.
In November 2000, our Board of Directors authorized the repurchase of up to $30,000,000 of our Common Stock (the “November 2000 Plan”). In 
July 2024, our Board of Directors authorized the repurchase of up to $100,000,000 of our Common Stock (the “New Repurchase Authorization”). The New 
Repurchase Authorization replaces the November 2000 Plan in its entirety and no further repurchases will be made pursuant to the November 2000 Plan. 
As of December 31, 2024, we had approximately $99,503,000 remaining available for repurchases of our Common Stock under the New Repurchase 
Authorization. The timing and amounts of Common Stock repurchases under the New Repurchase Authorization are at the discretion of the Company's 
President and Chief Executive Officer based upon economic and financial market conditions. 
As of December 31, 2024, we had a total of approximately $12,669,000 of cancelable and non-cancelable capital expenditure commitments, 
principally for manufacturing and production equipment, which we intend to fund with existing cash, and approximately $1,946,000 of capital expenditure 
items and internal-use software which had been received and included in Property, plant and equipment in the accompanying Consolidated Balance Sheets, 
but not yet paid for. Our primary needs for liquidity are for making continuing investments in manufacturing and production equipment. We believe cash 
generated from operations together with our available cash and cash equivalents will be sufficient to fund planned operational needs and capital equipment 
purchases for the foreseeable future.
We do not consider the impact of inflation and changing prices on our business activities or fluctuations in the exchange rates for foreign currency 
transactions to have been significant during the last three fiscal years.
ITEM 7A.  QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK 
 
We are exposed to a variety of market risks, including changes in interest rates affecting the return on our cash and cash equivalents, short-term 
investments and fluctuations in foreign currency exchange rates.  As our cash and cash equivalents and short-term investments consist principally of cash 
accounts, money market securities and U.S. Treasury securities, which are short-term in nature, we believe our exposure to market risk on interest rate 
fluctuations for these investments is not significant. As of December 31, 2024, our long-term investment portfolio, recorded on our Consolidated Balance 
Sheet as “Long-term investment, net”, consisted of a single auction rate security with a par value of $3,000,000, purchased through and held in custody by 
a broker-dealer affiliate of Bank of America, N.A., that has experienced failed auctions (the “Failed Auction Security”) since February 2008.  While the 
Failed Auction Security is Aaa/AA+ rated by major credit rating agencies, collateralized by student loans and guaranteed by the U.S. Department of 
Education under the Federal Family Education Loan Program, continued failure to sell at its periodic auction dates (i.e., reset dates) could negatively 
impact the carrying value of the investment, in turn leading to impairment charges in future periods.  Periodic changes in the fair value of the Failed 
Auction Security attributable to credit loss (i.e., risk of the issuer’s default) are recorded through earnings as a component of “Other income (expense), 
net”, with the remainder of any periodic change in fair value not related to credit loss (i.e., temporary “mark-to-market” carrying value adjustments) 
recorded in “Accumulated other comprehensive income (loss)”, a component of Vicor Corporation Stockholders’ Equity.  Should we conclude a decline in 

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the fair value of the Failed Auction Security is other than temporary, such losses would be recorded through earnings as a component of “Other income 
(expense), net”.  We do not believe there was an “other-than-temporary” decline in value in this security as of December 31, 2024.  
We estimate our annual interest income would change by approximately $30,000 in 2024 for each 100 basis point increase or decrease in interest 
rates.
Our exposure to market risk for fluctuations in foreign currency exchange rates relates primarily to the operations of VJCL, for which the functional 
currency is the Japanese Yen, and changes in the relative value of the Yen to the U.S. Dollar.  Relative to our Yen exposure as of December 31, 2024, we 
estimate a 10% unfavorable movement in the value of the Yen relative to the U.S. Dollar would increase our foreign currency loss by approximately 
$49,000. The functional currency of all other subsidiaries in Europe and other subsidiaries in Asia is the U.S. Dollar. While we believe risk to fluctuations 
in foreign currency rates for these subsidiaries is generally not significant, they can be subject to substantial currency changes, and therefore foreign 
exchange exposures. 

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ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA
INDEX 
 
 
Page
FINANCIAL STATEMENTS
 
Report of Independent Registered Public Accounting Firm 
32
Consolidated Balance Sheets as of December 31, 2024 and December 31, 2023
34
Consolidated Statements of Operations For The Years Ended December 31, 2024, 2023, and 2022
35
Consolidated Statements of Comprehensive Income For The Years Ended December 31, 2024, 2023, and 2022
36
Consolidated Statements of Cash Flows For The Years Ended December 31, 2024, 2023, and 2022
37
Consolidated Statements of Equity For The Years Ended December 31, 2024, 2023, and 2022
38
Notes to the Consolidated Financial Statements
39
Schedule (Refer to Item 15)
65
 

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Report of Independent Registered Public Accounting Firm
 
To the Stockholders and Board of Directors
Vicor Corporation:
 
Opinion on the Consolidated Financial Statements
 
We have audited the accompanying consolidated balance sheets of Vicor Corporation and subsidiaries (the Company) as of December 31, 2024 and 2023, 
the related consolidated statements of operations, comprehensive income, equity, and cash flows for each of the years in the three-year period ended 
December 31, 2024, and the related notes and financial statement schedules listed in Item 15(a)(2) (collectively, the consolidated financial statements). In 
our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2024 
and 2023, and the results of its operations and its cash flows for each of the years in the three-year period ended December 31, 2024, in conformity with 
U.S. generally accepted accounting principles.
 
We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company’s 
internal control over financial reporting as of December 31, 2024, based on criteria established in Internal Control – Integrated Framework (2013) issued 
by the Committee of Sponsoring Organizations of the Treadway Commission, and our report dated March 3, 2025 expressed an unqualified opinion on 
the effectiveness of the Company’s internal control over financial reporting.
 
Basis for Opinion
These consolidated financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on these 
consolidated financial statements based on our audits. We are a public accounting firm registered with the 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 consolidated financial statements are free of material misstatement, whether due to error or fraud. Our audits 
included performing procedures to assess the risks of material misstatement of the consolidated 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 consolidated 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 consolidated financial statements. We believe that our audits provide a reasonable basis 
for our opinion.
 
Critical Audit Matters
The critical audit matters communicated below are matters arising from the current period audit of the consolidated financial statements that were 
communicated or required to be communicated to the audit committee and that: (1) relate to accounts or disclosures that are material to the consolidated 
financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not 
alter in any way our opinion on the consolidated financial statements, taken as a whole, and we are not, by communicating the critical audit matters 
below, providing separate opinions on the critical audit matters or on the accounts or disclosures to which they relate.
Realizability of raw materials inventory
As discussed in Note 2 to the consolidated financial statements, the Company values inventories at the lower of cost, determined using the first-in, first-
out method, or net realizable value. The Company’s estimation process for assessing net realizable value is based upon expected future utility, which was 
derived based on backlog, historical consumption and expected market conditions. As disclosed in Note 3 to the consolidated financial statements 
approximately 74% or $78.9 million, of the Company’s total inventory balance is comprised of raw materials. 
We identified the evaluation of the realizability of certain raw materials inventory to be a critical audit matter. Subjective auditor judgment was required 
as a result of uncertainty in market conditions used to estimate forecasted future usage and 

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the long lead times to acquire raw materials within the global electronics supply chain. Changes in forecasted future usage could have a significant impact 
on the realizability of raw materials inventory.
The following are the primary procedures we performed to address this critical audit matter. We evaluated the design and tested the operating 
effectiveness of certain internal controls related to the critical audit matter. This included controls related to the Company’s process to develop its forecast 
of usage, including estimates of the projected demand based on historical usage and the potential impact of market conditions. We evaluated the 
Company’s estimate of the realizability of raw materials by:
•
assessing historical consumption as a predictor of future product demand by comparing it to trends in industry publications
•
examining the historical accuracy of the Company’s prior estimates by considering subsequent usage and write off activity
•
evaluating the adjustments made to forecast future demand based on historical usage data
•
interviewing operational personnel of the Company involved in purchasing and manufacturing to evaluate product innovations, 
changes in customer mix, and other factors that may impact expected future sales and usage of raw material inventory.
 
Realizability of domestic deferred tax assets
As discussed in Note 15 to the consolidated financial statements, the Company had a valuation allowance of $61.5 million against domestic deferred tax 
assets, net of deferred tax liabilities, for which realization cannot be considered more likely than not. In assessing the need for a valuation allowance, the 
Company considers all positive and negative evidence, including scheduled reversals of deferred tax liabilities, projected future taxable income, tax 
planning strategies, and past financial performance.
We identified the evaluation of the realizability of the domestic deferred tax assets as a critical audit matter due to subjectivity involved in assessing the 
recoverability of those deferred tax assets. Subjective auditor judgment was required to evaluate the uncertainty inherent in estimating the Company’s 
ability to generate sufficient domestic taxable income exclusive of reversing temporary differences of the appropriate character in the future.
The following are the primary procedures we performed to address this critical audit matter. We evaluated the design and tested the operating 
effectiveness of certain internal controls related to the Company’s income tax process, including a control related to the assessment of the realizability of 
deferred tax assets and the application of relevant tax regulations. To assess the Company’s ability to forecast its financial performance used to determine 
future domestic taxable income, we compared the Company’s previous forecasts to actual results, and evaluated the Company’s consideration of the 
customer orders as well as the impact of industry and global economic conditions through inquiry with operational personnel and inspection of third-party 
publications. We involved federal income tax professionals with specialized skills and knowledge, who assisted in assessing the Company’s application 
of relevant tax regulations and evaluating the realizability of deferred tax assets.
 
/s/ KPMG LLP
We have served as the Company’s auditor since 2013. 
Boston, Massachusetts
March 3, 2025

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VICOR CORPORATION
CONSOLIDATED BALANCE SHEETS
December 31, 2024 and 2023
(In thousands, except share data)
 
 
 
2024
   
2023
 
ASSETS
   
     
 
Current assets:
 
    
   
Cash and cash equivalents
  $
277,273    $
242,219 
Accounts receivable, less allowance of $130 in 2024 and 2023
   
52,948     
52,631 
Inventories
   
106,032     
106,579 
Other current assets
   
26,781     
18,937 
Total current assets
   
463,034     
420,366 
Deferred tax assets
   
261     
296 
Long-term investment, net
   
2,641     
2,530 
Property, plant and equipment, net
   
152,705     
157,689 
Other assets
   
22,477     
14,006 
Total assets
  $
641,118    $
594,887 
LIABILITIES AND EQUITY
 
    
   
Current liabilities:
 
    
   
Accounts payable
  $
8,737    $
12,100 
Accrued compensation and benefits
   
10,852     
11,227 
Accrued litigation
   
26,888     
6,500 
Accrued expenses
   
6,589     
5,093 
Sales allowances
   
1,667     
3,482 
Short-term lease liabilities
   
1,716     
1,864 
Income taxes payable
   
59     
746 
Short-term deferred revenue and customer prepayments
   
5,312     
3,157 
Total current liabilities
   
61,820     
44,169 
Long-term deferred revenue
   
—     
1,020 
Long-term income taxes payable
   
3,387     
2,228 
Long-term lease liabilities
   
5,620     
6,364 
Total liabilities
   
70,827     
53,781 
Commitments and contingencies (Note 16)
 
    
   
Equity:
 
    
   
Vicor Corporation stockholders’ equity:
 
    
   
Class B Common Stock: 10 votes per share, $.01 par value, 14,000,000 shares 
   authorized, 11,738,718 shares issued and outstanding in 2024; 11,743,218
   shares issued and outstanding in 2023
   
118     
118 
Common Stock: 1 vote per share, $.01 par value, 62,000,000 shares
   authorized, 45,082,156 shares issued and 33,433,046 shares
   outstanding in 2024; 44,354,394 shares issued and 32,719,588
   shares outstanding in 2023
   
452     
445 
Additional paid-in capital
   
407,617     
383,832 
Retained earnings
   
302,803     
296,674 
Accumulated other comprehensive loss
   
(1,495)    
(1,273)
Treasury stock at cost: 11,649,110 shares in 2024 and 11,634,806 shares in 2023
   
(139,424)    
(138,927)
Total Vicor Corporation stockholders’ equity
   
570,071     
540,869 
Noncontrolling interest
   
220     
237 
Total equity
   
570,291     
541,106 
Total liabilities and equity
  $
641,118    $
594,887 
 
See accompanying notes.

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VICOR CORPORATION
CONSOLIDATED STATEMENTS OF OPERATIONS
Years Ended December 31, 2024, 2023 and 2022
(In thousands, except share data)
 
 
 
2024
   
2023
   
2022
 
Product revenue
  $
312,463    $
389,187    $
396,278 
Royalty revenue
   
46,595     
15,872     
2,801 
Net revenues
   
359,058     
405,059     
399,079 
Cost of product revenues
   
175,060     
200,130     
218,520 
Gross margin
   
183,998     
204,929     
180,559 
Operating expenses:
 
    
    
   
Selling, general and administrative
   
96,886     
85,714     
86,264 
Research and development
   
68,922     
67,857     
60,594 
Litigation-contingency expense
   
19,500     
—     
6,500 
Total operating expenses
   
185,308     
153,571     
153,358 
(Loss) income from operations
   
(1,310)    
51,358     
27,201 
Other income (expense), net:
 
    
    
   
Total unrealized gains (losses) on available-for-sale
 
    
    
   
securities, net
   
111     
(92)    
(17)
Portion of (gains) losses recognized in other
 
    
    
   
comprehensive income
   
(111)    
92     
20 
Net credit gains recognized in earnings
   
—     
—     
3 
Other income (expense), net
   
11,797     
8,886     
1,483 
Total other income (expense), net
   
11,797     
8,886     
1,486 
Income before income taxes
   
10,487     
60,244     
28,687 
Less: Provision for income taxes
   
4,348     
6,644     
3,261 
Consolidated net income
   
6,139     
53,600     
25,426 
Less:  Net income (loss) attributable to
 
    
    
   
noncontrolling interest
   
10     
5     
(20)
Net income attributable to Vicor Corporation
  $
6,129    $
53,595    $
25,446 
 
 
    
    
   
Net income per common share attributable to
 
    
    
   
Vicor Corporation:
 
    
    
   
Basic
  $
0.14    $
1.21    $
0.58 
Diluted
  $
0.14    $
1.19    $
0.57 
Shares used to compute net income per common share
 
    
    
   
attributable to Vicor Corporation:
 
    
    
   
Basic
   
44,912     
44,320     
44,005 
Diluted
   
45,168     
45,004     
44,894 
 
See accompanying notes.

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VICOR CORPORATION
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME 
Years Ended December 31, 2024, 2023 and 2022
(In thousands)
 
 
 
2024
   
2023
   
2022
 
Consolidated net income
  $
6,139    $
53,600    $
25,426 
Foreign currency translation losses, net of
 
   
   
   
tax benefit (1)
   
(360)    
(209)    
(519)
Unrealized gains (losses) on available-for-sale
 
    
    
   
securities, net of tax (1)
   
111     
(92)    
821 
Other comprehensive (loss) income
   
(249)    
(301)    
302 
Consolidated comprehensive income
   
5,890     
53,299     
25,728 
Less: Comprehensive loss attributable to
 
    
    
   
noncontrolling interest
   
(17)    
(11)    
(58)
Comprehensive income attributable to
 
    
    
   
Vicor Corporation
  $
5,907    $
53,310    $
25,786 
 
(1)
The deferred tax assets associated with cumulative foreign currency translation losses and cumulative unrealized gains (losses) on available-for-sale 
securities are completely offset by a tax valuation allowance as of December 31, 2024, 2023, and 2022. Therefore, there is no income tax benefit 
(provision) recognized in any of the three years ended December 31, 2024.
See accompanying notes.

37
Table of Contents
VICOR CORPORATION
CONSOLIDATED STATEMENTS OF CASH FLOWS
Years Ended December 31, 2024, 2023 and 2022
(In thousands)
 
 
 
2024
   
2023
   
2022
 
Operating activities:
 
    
    
   
Consolidated net income
  $
6,139    $
53,600    $
25,426 
Adjustments to reconcile consolidated net income 
   to net cash provided by operating activities:
 
    
    
   
Depreciation and amortization
   
18,626     
17,240     
13,776 
Stock-based compensation expense
   
15,302     
12,869     
10,264 
Provision for doubtful accounts
   
—     
43     
5 
Deferred income taxes
   
6     
(34)    
(72)
Litigation-contingency expense
   
19,500     
—     
6,500 
Amortization of bond premium
   
—     
—     
1,056 
Credit gain on available-for-sale securities
   
—     
—     
(3)
(Decrease) increase in long-term deferred revenue
   
(1,020)    
875     
(268)
Decrease (increase) in other assets
   
1,109     
(192)    
(692)
Increase in long-term income taxes payable
   
1,159     
1,366     
293 
Change in current assets and liabilities, net
   
(9,979)    
(11,239)    
(33,346)
Net cash provided by operating activities
   
50,842     
74,528     
22,939 
Investing activities:
 
    
    
   
Additions to property, plant and equipment and internal-use
   software
   
(23,602)    
(33,452)    
(63,966)
Sales and maturities of short-term investments
   
—     
—     
45,000 
Net cash used for investing activities
   
(23,602)    
(33,452)    
(18,966)
Financing activities:
 
    
    
   
Proceeds from employee stock plans
   
8,490     
10,602     
4,439 
Repurchases of Common Stock
   
(497)    
—     
— 
Net cash provided by financing activities
   
7,993     
10,602     
4,439 
Effect of foreign exchange rates on cash
   
(179)    
(70)    
(219)
Net increase in cash and cash equivalents
   
35,054     
51,608     
8,193 
Cash and cash equivalents at beginning of year
   
242,219     
190,611     
182,418 
Cash and cash equivalents at end of year
  $
277,273    $
242,219    $
190,611 
Change in current assets and liabilities:
 
    
    
   
Accounts receivable
  $
(483)   $
12,640    $
(10,586)
Inventories
   
457     
(5,236)    
(34,204)
Other current assets
   
(7,886)    
(539)    
1,547 
Accounts payable and accrued liabilities
   
(1,845)    
(11,151)    
4,399 
Accrued severance and other charges
   
(9)    
9     
(93)
Short-term lease liabilities
   
131     
583     
103 
Income taxes payable
   
(684)    
674     
6 
Deferred revenue and customer prepayments
   
340     
(8,219)    
5,482 
Change in current assets and liabilities, net
  $
(9,979)   $
(11,239)   $
(33,346)
Supplemental disclosures:
 
    
    
   
Cash paid during the year for income taxes, net of refunds
  $
4,302    $
4,151    $
1,263 
Purchases of property, plant and equipment and internal-use software incurred but not 
yet paid
  $
1,946    $
2,168    $
4,194 
 
See accompanying notes.

 
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VICOR CORPORATION
CONSOLIDATED STATEMENTS OF EQUITY
Years Ended December 31, 2024, 2023 and 2022
(In thousands)
 
 
 
 
   
 
   
 
   
 
   
 
   
 
   
Total
   
 
   
 
 
 
 
 
   
 
   
 
   
 
    Accumulated    
 
   
Vicor
   
 
   
 
 
 
 
Class B
   
 
   
Additional
   
 
   
Other
   
 
    Corporation    
 
   
 
 
 
  Common     Common    
Paid-In
    Retained    
Comprehensi
ve
    Treasury    
Stockholders
’
   
Noncontrollin
g
   
Total
 
 
 
Stock
   
Stock
   
Capital
    Earnings    
(Loss) 
Income
   
Stock
   
Equity
   
Interest
   
Equity
 
Balance on December 31, 2021
  $
118     $
439     $
345,664     $
217,633     $
(1,328 )   $ (138,927 )   $
423,599     $
306     $
423,905  
Issuance of Common Stock under 
employee stock plans
 
       
2      
4,437    
     
     
       
4,439    
       
4,439  
Stock-based compensation expense
 
     
       
10,264    
     
     
       
10,264    
       
10,264  
Components of comprehensive income, 
net of tax
 
     
     
     
     
     
     
     
     
   
Net income (loss)
 
     
     
       
25,446    
     
       
25,446      
(20 )    
25,426  
Other comprehensive income (loss)
 
     
     
     
       
340    
       
340      
(38 )    
302  
Total comprehensive income (loss)
 
     
     
     
     
     
       
25,786      
(58 )    
25,728  
Balance on December 31, 2022
   
118      
441      
360,365      
243,079      
(988 )     (138,927 )    
464,088      
248      
464,336  
Issuance of Common Stock under 
employee stock plans
 
       
4      
10,598    
     
     
       
10,602    
       
10,602  
Stock-based compensation expense
 
     
       
12,869    
     
     
       
12,869    
       
12,869  
Components of comprehensive income, 
net of tax
 
     
     
     
     
     
     
     
     
   
Net income
 
     
     
       
53,595    
     
       
53,595      
5      
53,600  
Other comprehensive loss
 
     
     
     
       
(285 )  
       
(285 )    
(16 )    
(301 )
Total comprehensive income (loss)
 
     
     
     
     
     
       
53,310      
(11 )    
53,299  
Balance on December 31, 2023
   
118      
445      
383,832      
296,674      
(1,273 )     (138,927 )    
540,869      
237      
541,106  
Issuance of Common Stock under 
employee stock plans
 
       
7      
8,483    
     
     
       
8,490    
       
8,490  
Stock-based compensation expense
 
     
       
15,302    
     
     
       
15,302    
       
15,302  
Repurchases of Common Stock
 
     
     
     
     
       
(497 )    
(497 )  
       
(497 )
Components of comprehensive income 
(loss), net of tax
 
     
     
     
     
     
     
     
     
   
Net income
 
     
     
       
6,129    
     
       
6,129      
10      
6,139  
Other comprehensive loss
 
     
     
     
       
(222 )  
       
(222 )    
(27 )    
(249 )
Total comprehensive income (loss)
 
     
     
     
     
     
       
5,907      
(17 )    
5,890  
Balance on December 31, 2024
  $
118     $
452     $
407,617     $
302,803     $
(1,495 )   $ (139,424 )   $
570,071     $
220     $
570,291  
 
See accompanying notes.

VICOR CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
39
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1. DESCRIPTION OF BUSINESS
Vicor Corporation (the “Company” or “Vicor”) designs, develops, manufactures, and markets modular power components and power systems for 
converting electrical power. The Company also licenses certain rights to its technology in return for recurring royalties. The principal markets for the 
Company’s power converters and systems are large original equipment manufacturers (“OEMs”), original design manufacturers (“ODMs”) and their 
contract manufacturers, and smaller, lower volume users, which are broadly distributed across several major market areas.
2. SIGNIFICANT ACCOUNTING POLICIES
Principles of consolidation
The Consolidated Financial Statements include the accounts of the Company and its subsidiaries. All intercompany transactions and balances have 
been eliminated upon consolidation. 
Use of estimates
The preparation of financial statements in conformity with accounting principles generally accepted in the United States (“U.S. GAAP”) requires 
management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingencies at the date of the 
financial statements and the reported amounts of revenue and expenses during the reporting period. Such estimates and assumptions relate to the useful 
lives of fixed assets and identified intangible assets, recoverability of long-lived assets, fair value of short-term and long-term investments, allowances for 
doubtful accounts, potential excess, obsolete or unmarketable inventory, potential reserves relating to litigation matters, accrued liabilities, accrued taxes, 
deferred tax valuation allowances, assumptions pertaining to share-based payments, and other reserves. Actual results could differ from those based on 
these estimates and assumptions, and such differences may be material to the financial statements.
Foreign currency translation
The financial statements of Vicor Japan Company, Ltd. ("VJCL"), a majority-owned subsidiary, for which the functional currency is the Japanese 
Yen, have been translated into U.S. Dollars using the exchange rate in effect at the balance sheet date for balance sheet amounts and the average exchange 
rates in effect during the year for income statement amounts. The gains and losses resulting from the changes in exchange rates from year to year have been 
reported in other comprehensive income.
Transaction gains and losses resulting from the remeasurement of foreign currency denominated assets and liabilities of the Company’s foreign 
subsidiaries where the functional currency is the U.S. Dollar are included in other income (expense), net. Foreign currency losses included in other income 
(expense), net were approximately $(622,000), $(161,000), and $(653,000) in 2024, 2023, and 2022, respectively.
Investments
The Company’s principal sources of liquidity are its existing balances of cash, cash equivalents, and cash generated from operations. Consistent 
with the guidelines of the Company’s investment policy, the Company can invest, and has historically invested, its cash balances in demand deposit 
accounts, money market funds, government debt securities, and auction rate securities meeting certain quality criteria. 
Cash and Cash Equivalents
Cash and cash equivalents are highly liquid investments with insignificant interest rate risk and maturities of 90 days or less at the time of 
acquisition.  Cash and cash equivalents include funds held in disbursement (i.e., checking) and money market accounts, certificates of deposit, and debt 
securities with maturities of less than three months at the time of purchase. Cash and cash equivalents are valued at cost, approximating market value. The 
Company’s money market securities are purchased and redeemed at par value. Their estimated fair value is equal to their cost, and, due to the nature of the 
securities and their classification as cash equivalents, there are no unrealized gains or losses recorded at the balance sheet dates. 

VICOR CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
40
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Short-term Investments
The Company’s short-term investments, consisting of obligations of the U.S. Treasury, are debt securities with original maturities greater than three 
months but less than one year at the time of purchase.
Long-term Investment 
The Company’s long-term investment is an auction rate debt security with a maturity of greater than one year and is subject to credit, liquidity, 
market, and interest rate risk.
Available-For-Sale Securities
Certain of the cash and cash equivalents, all of the short-term investments and the long-term investment are classified as available-for-sale securities 
(“AFS”).   These securities are recorded at fair value, with unrealized gains and losses, net of tax, attributable to credit loss recorded through the 
Consolidated Statement of Operations and unrealized gains and losses, net of tax, attributable to other non-credit factors recorded in “Accumulated other 
comprehensive loss,” a component of Total Equity. Given the nature of the cash and cash equivalents and the short-term investments designated as AFS, 
credit losses are not considered to be material.  In determining the amount of credit loss for the long-term investment, the Company compares the present 
value of cash flows expected to be collected to the amortized cost basis of the security, considering credit default risk probabilities and changes in credit 
ratings, among other factors.  
The Company periodically evaluates the long-term investment to determine if impairment is required, whether an impairment is other than 
temporary, and the measurement of an impairment loss. The Company considers a variety of impairment indicators such as, but not limited to, a significant 
deterioration in the earnings performance, credit rating, or asset quality of the investment.
The amortized cost of the debt securities are adjusted for amortization of premiums and accretion of discounts to maturity, the net amount of which, 
along with interest and realized gains and losses, is included in “Other income (expense), net” in the Consolidated Statements of Operations.
Fair value measurements
The Company accounts for certain financial assets at fair value, defined as the price that would be received to sell an asset or paid to transfer a 
liability (i.e., an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on 
the measurement date. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would 
use in pricing an asset or liability. A three-level hierarchy is used to show the extent and level of judgment used to estimate fair value measurements:
 
  Level 1
Inputs used to measure fair value are unadjusted quoted prices available in active markets for the identical assets or liabilities as of 
the reporting date.
  Level 2
Inputs used to measure fair value, other than quoted prices included in Level 1, are either directly or indirectly observable as of the 
reporting date through correlation with market data, including quoted prices for similar assets and liabilities in active markets and 
quoted prices in inactive markets. Level 2 also includes assets and liabilities valued using models or other pricing methodologies that 
do not require significant judgment since the input assumptions used in the models, such as interest rates and volatility factors, are 
corroborated by readily observable data from actively quoted markets for substantially the full term of the financial instrument.
  Level 3
Inputs used to measure fair value are unobservable inputs supported by little or no market activity and reflect the use of significant 
management judgment. These values are generally determined using pricing models for which the assumptions utilize management’s 
estimates of market participant assumptions.
 
The carrying amounts of cash and cash equivalents, short-term investments, accounts receivable, and accounts payable approximate fair value 
because of the short maturities of these financial instruments. 

VICOR CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
41
Table of Contents
Inventories
Inventories are valued at the lower of cost (determined using the first-in, first-out method) or net realizable value. Fixed production overhead is 
allocated to the inventory cost per unit based on the normal capacity of the production facilities. Abnormal production costs, including fixed cost variances 
from normal production capacity, if any, are charged to cost of product revenues in the period incurred. All shipping and handling costs incurred in 
connection with the sale of products are included in cost of product revenues.
Inventory estimated to be excess, obsolete, or unmarketable is written down to net realizable value. The Company’s estimation process for assessing 
net realizable value is based upon management’s estimate of expected future utility which is derived based on backlog, historical consumption and 
expected market conditions. If the Company’s estimated demand and/or market expectations were to change or if product sales were to decline, the 
Company’s estimation process may cause larger inventory reserves to be recorded, resulting in larger charges to cost of product revenues. 
Government Grants 
The Company accounts for government assistance that is not subject to the scope of Accounting Standards Codification ("ASC") 740, Income Taxes 
using a grant accounting model, by analogy to International Accounting Standards 20, Accounting for Government Grants and Disclosure of Government 
Assistance, and recognize such grants when we have reasonable assurance that we will comply with the grant’s conditions and that the grant will be 
received. Government grants whose primary condition is the purchase, construction, or acquisition of a long-lived asset are considered asset-based grants 
and are recognized as a reduction to such asset’s cost basis, which reduces future depreciation. Other government grants not related to long-lived assets are 
considered income-based grants, which are initially recognized as “Government grants receivable” and are also recognized as a reduction to the related cost 
of activities that generated the benefit. Proceeds received from asset based grants are presented as cash inflows from investing activities on the consolidated 
statements of cash flows, whereas proceeds received from income based grants are presented as cash inflows from operating activities.
Concentrations of risk
Financial instruments potentially subjecting the Company to significant concentrations of credit risk consist principally of cash and cash equivalents 
and short-term investments, of which a significant portion are held by three financial institutions, its long-term investment, and trade accounts receivable. 
The Company maintains cash and cash equivalents, short-term investments and certain other financial instruments with high credit counterparties, and 
continuously monitors the amount of credit exposure to any one issuer and diversifies its investments in order to minimize its credit risk. Generally, 
amounts invested with these financial institutions are in excess of federal deposit insurance limits.  The Company has not experienced any losses in such 
accounts, and management believes the Company is not exposed to significant credit risk.  The Company’s long-term investment as of December 31, 2024 
consists of a single auction rate security with a par value of $3,000,000, which is collateralized by student loans. It is a highly rated (Aaa/AA+) municipal 
and corporate debt security. Through December 31, 2024, auctions held for the Company’s auction rate security have failed. The funds associated with an 
auction rate security that has failed auction may not be accessible until a successful auction occurs, a buyer is found outside of the auction process, the 
security is called, or the underlying securities have matured. If the credit rating of the issuer of the auction rate security held deteriorates, the Company may 
be required to adjust the carrying value of the investment for an other-than-temporary decline in value through an impairment charge. The Company’s 
investment policy, approved by the Board of Directors, limits the amount the Company may invest in any issuer, thereby reducing credit risk 
concentrations.
The Company’s products are sold worldwide to customers ranging from smaller, independent manufacturers of highly specialized electronic 
devices, to larger OEMs, ODMs and their contract manufacturers.  The Company’s Brick Products’ customers are primarily concentrated in the following 
industries: aerospace and defense electronics, industrial equipment, instrumentation and test equipment, and transportation (notably in rail and heavy 
equipment applications). The Company’s  Advanced Products’ customers are concentrated in the data center and hyperscaler segments of enterprise 
computing, in which the Company’s products are used for power delivery on server motherboards, in server racks, and across datacenter infrastructure. The 
Company also serves applications in aerospace and aviation, defense electronics, satellites, factory automation, instrumentation, test equipment, 
transportation, telecommunications and networking infrastructure, and vehicles (notably in the autonomous driving, electric vehicle, and hybrid vehicle 
niches of the vehicle segment).  While, overall, the Company has a broad customer base and sells into a variety of industries, a substantial portion of the 
Company’s revenue from its Advanced Products line has been derived from a limited number of customers.  This concentration of revenue is a 

VICOR CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
42
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reflection of the relatively early stage of adoption of the technologies, architectures and products offered in the Advanced Products line, and the Company’s 
strategy of targeting market leading innovators as initial customers for its Advanced Products.   Concentrations of credit risk with respect to trade accounts 
receivable are limited due to the number of entities comprising the Company’s customer base. As of December 31, 2024 and 2023, one customer accounted 
for approximately 11.5% and 12.0%, respectively, of trade account receivables. 
Components and materials used in the Company’s products are purchased from a variety of vendors.  While most of the components are available 
from multiple sources, some key components for certain Advanced Products, in particular, are supplied by single vendors.  In instances of single source 
items, the Company maintains levels of inventories management considers appropriate to enable meeting the delivery requirements of customers.  If 
suppliers or subcontractors cannot provide their products or services on time or to the required specifications, the Company may not be able to meet the 
demand for its products and its delivery times may be negatively affected.
Long-lived assets
The Company reviews property, plant and equipment and finite-lived intangible assets for impairment whenever events or changes in circumstances 
indicate the carrying value of such assets may not be recoverable.  Management determines whether the carrying value of an asset or asset group is 
recoverable based on comparison to the undiscounted expected future cash flows the assets are expected to generate over their remaining economic lives.  
If an asset value is not recoverable, the impairment loss is equal to the amount by which the carrying value of the asset exceeds its fair value, which is 
determined by either a quoted market price, if any, or a value determined by utilizing a discounted cash flow technique.  Evaluation of impairment of long-
lived assets requires estimates of future operating results that are used in the preparation of the expected future undiscounted cash flows.  Actual future 
operating results and the remaining economic lives of our long-lived assets could differ from the estimates used in assessing the recoverability of these 
assets.   These differences could result in impairment charges, which could be material.
Intangible assets
Patents
Values assigned to patents are amortized using the straight-line method over periods ranging from three to 20 years.  Patents and other intangible 
assets are included in “Other assets” in the accompanying Consolidated Balance Sheets.
Internally Developed Software
We capitalize internal and external costs related to developing, modifying or obtaining software for internal use, incurred during the application 
development stage in accordance with Accounting Standards Codification 350-40, Internal-Use Software. Costs related to software upgrades and 
enhancements are capitalized if it is determined that these upgrades or enhancements provide additional functionality to the software. The capitalized 
software is amortized using the straight-line method over the estimated useful life of the software. As of December 31, 2024 and 2023, we had $20,469,000 
and $11,712,000, respectively, of capitalized internal-use software costs which have not been amortized as the software has not yet been placed in service.
Product warranties
The Company generally offers a two-year warranty for all of its products, though it has extended the warranty period to three years for certain 
products. The Company provides for the estimated cost of product warranties at the time product revenue is recognized. Factors influencing the Company’s 
warranty reserves include the number of units sold, historical and anticipated rates of warranty returns, and the cost per return. The Company periodically 
assesses the adequacy of warranty reserves and adjusts the amounts as necessary. Warranty obligations are included in "Accrued expenses" in the 
accompanying Consolidated Balance Sheets.
Revenue recognition 
Revenue is recognized when control of the promised goods or services is transferred to a customer, in an amount that reflects the consideration the 
Company expects to be entitled to in exchange for those goods or services. Sales, value add, and other taxes collected concurrent with revenue producing 
activities are excluded from revenue. The expected costs associated 

VICOR CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
43
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with product warranties continue to be recognized at the time product revenue is recognized. Shipping and handling costs associated with outbound freight 
after control over a product has transferred to a customer are accounted for as a fulfillment cost and are included in cost of product revenues.
The Company’s primary source of net revenue comes from the sale of products, which are modular power components and power systems for 
converting, regulating and controlling electric current. The principal customers for the Company’s power converters and systems are large OEMs, ODMs 
and the original design manufacturers and contract manufacturers serving them, and smaller, lower volume users, which are broadly distributed across 
several major market areas. The Company recognizes revenue for product sales at a point in time following the transfer of control of such products to the 
customer, including sales to stocking distributors, which typically occurs upon shipment or delivery, depending on the terms of the underlying contract.  
The Company establishes sales allowances on shipments to stocking distributors for estimated future product returns including distributor returns and price 
adjustment credits, primarily based upon historical and anticipated rates of product returns and allowances.
Certain contracts with customers contain multiple performance obligations, which typically may include a combination of non-recurring engineering 
services (“NRE”), prototype units, and production units. For these contracts, the individual performance obligations are accounted for separately if they are 
distinct. Generally, the Company has determined the NRE and prototype units represent one distinct performance obligation and the production units 
represent a separate distinct performance obligation. For such arrangements, revenue is allocated to each performance obligation based on its relative 
standalone selling price, based on prices charged to customers or using the expected cost plus a margin approach. The Company recognizes revenue for 
NRE and prototype units at the point in time at which the final milestone under the NRE arrangement is completed and control is transferred to the 
customer, which is generally the shipment or delivery of the prototype. Revenue for production units is recognized upon shipment or delivery, consistent 
with product revenue summarized above.
The Company licenses its intellectual property under right to use licenses, in which royalties due to the Company are based upon a percentage of the 
licensee’s sales. The Company utilizes the exception under the revenue recognition guidance for the recognition of sales- or usage-based royalties, in which 
the royalties are not recognized until the later of when 1) the customer’s subsequent sales or usages occur, or 2) the performance obligation to which some 
or all of the sales- or usage-based royalty has been allocated is satisfied or partially satisfied.
Accounts receivable includes amounts billed and currently due from customers. The amounts due are stated at their estimated realizable value. The 
Company’s payment terms vary by the type and location of its customers and the products or services offered, although terms generally include a 
requirement of payment within 30 to 60 days. The Company maintains allowances for doubtful accounts for estimated losses resulting from the inability of 
its customers to make required payments, based on assessments of customers’ credit-risk profiles and payment histories. If the financial condition of the 
Company’s customers were to deteriorate, resulting in an impairment of their ability to make payments, additional allowances may be required. The 
Company does not require collateral from its customers, although there have been circumstances when the Company has required cash in advance (i.e., a 
partial down-payment) to facilitate orders in excess of a customer’s established credit limit. To date, such amounts have not been material.
The Company records deferred revenue, which represents a contract liability, when cash payments are received or due in advance of performance 
under a contract with a customer. During the years ended December 31, 2024 and 2023, the Company recognized revenue of approximately $1,865,000 and 
$7,568,000, respectively, which was included in deferred revenue at the beginning of the respective period. 
The Company applies the practical expedient for the incremental costs of obtaining a contract for sales commissions, which are expensed when 
incurred because the amortization period is generally less than one year. These costs are included in selling, general and administrative expenses.
The Company also applies another practical expedient and does not disclose the value of unsatisfied performance obligations for contracts with an 
original expected length of one year or less.
Advertising expense
The cost of advertising is expensed as incurred. The Company incurred approximately $3,490,000, $3,730,000, and 

VICOR CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
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$3,786,000 in advertising costs during 2024, 2023, and 2022, respectively.
Legal Costs
Legal costs in connection with litigation are expensed as incurred. 
Stock-based compensation
The Company uses the Black-Scholes option-pricing model to calculate the fair value of stock option awards, whether they possess time-based 
vesting provisions or performance-based vesting provisions, and awards granted under the Vicor Corporation 2017 Employee Stock Purchase Plan 
(“ESPP”), as of their grant date. For stock options with time-based vesting provisions, the calculated compensation expense, net of expected forfeitures, is 
recognized on a straight-line basis over the service period of the award, which is generally five years for stock options.  For stock options with 
performance-based vesting provisions, recognition of compensation expense, net of expected forfeitures, commences if and when the achievement of the 
performance criteria is deemed probable.  For stock options with performance-based vesting provisions, compensation expense, net of expected forfeitures, 
when recognized, is recognized over the relevant performance period.  
Income taxes
Deferred tax assets and liabilities are determined based on the differences between the financial reporting and tax bases of assets and liabilities and 
are measured using the enacted income tax rates and laws expected to be in effect when the temporary differences are expected to reverse. Deferred tax 
assets are reduced by a valuation allowance if management determines it is more likely than not that some portion or all of the deferred tax assets will not 
be realized.  All deferred tax assets and liabilities are classified as noncurrent. 
The Company follows a two-step process to determine the amount of tax benefit to recognize. The first step is to evaluate the tax position to 
determine the likelihood it would be sustained upon examination by a tax authority. If the tax position is deemed “more-likely-than-not” to be sustained, 
the second step is to assess the tax position to determine the amount of tax benefit to be recognized in the financial statements. The amount of the benefit 
that may be recognized is the largest amount that possesses greater than 50 percent likelihood of being realized upon ultimate settlement. If the tax position 
does not meet the “more-likely-than-not” threshold, then it is not recognized in the financial statements. Additionally, the Company accrues interest and 
penalties, if any, related to unrecognized tax benefits as a component of income tax expense. The unrecognized tax benefits, including accrued interest and 
penalties, if any, are included in “Long-term income taxes payable” in the accompanying Consolidated Balance Sheets.
Net income per common share
The Company computes basic net income per share using the weighted average number of common shares outstanding and diluted net income per 
share using the weighted average number of common shares outstanding plus the effect of outstanding dilutive stock options, if any.  The following table 
sets forth the computation of basic and diluted net income per share for the years ended December 31 (in thousands, except per share amounts):
 
 
 
2024
   
2023
   
2022
 
Numerator:
 
    
    
   
Net income attributable to Vicor Corporation
  $
6,129    $
53,595    $
25,446 
Denominator:
 
    
    
   
Denominator for basic net income per share-
   weighted average shares (1)
   
44,912     
44,320     
44,005 
Effect of dilutive securities:
 
    
    
   
Employee stock options (2)
   
256     
684     
889 
Denominator for diluted net income per share-
   adjusted weighted-average shares and assumed conversions (3)
   
45,168     
45,004     
44,894 
Basic net income per share
  $
0.14    $
1.21    $
0.58 
Diluted net income per share
  $
0.14    $
1.19    $
0.57 
 

VICOR CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
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(1)
Denominator represents weighted average number of Common Shares and Class B Common Shares outstanding.
(2)
Options to purchase 2,504,068, 1,557,927 and 879,228 shares of Common Stock in 2024, 2023, and 2022, respectively, were not included in the 
calculation of net income per share as the effect would have been antidilutive.
(3)
Denominator represents weighted average number of Common Shares and Class B Common Shares outstanding for the year, adjusted to include the 
dilutive effect, if any, of outstanding options.
Comprehensive income (loss)
The components of comprehensive income (loss) include, in addition to consolidated net income, unrealized gains and losses on investments, net of 
tax and foreign currency translation adjustments related to VJCL, net of tax. 
Impact of recently issued accounting standards
 
On November 27, 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2023-07, 
Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures, which enhances segment disclosures and requires additional disclosures 
of segment expenses. This ASU is effective for annual periods in fiscal years beginning after December 15, 2023, and interim periods thereafter. The 
Company adopted ASU 2023-07 during the year ended December 31, 2024 on a retrospective basis. See Note 10 Segment Information to the consolidated 
financial statements.
 
In December 2023, the FASB issued ASU No. 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures, which focuses on 
the rate reconciliation and income taxes paid. ASU No. 2023-09 requires a public business entity ("PBE") to disclose, on an annual basis, a tabular rate 
reconciliation using both percentages and currency amounts, broken out into specified categories with certain reconciling items further broken out by 
nature and jurisdiction to the extent those items exceed a specified threshold. In addition, all entities are required to disclose income taxes paid, net of 
refunds received disaggregated by federal, state/local, and foreign and by jurisdiction if the amount is at least 5% of total income tax payments, net of 
refunds received. For PBEs, the new standard is effective for annual periods beginning after December 15, 2024, with early adoption permitted. An entity 
may apply the amendments in this ASU prospectively by providing the revised disclosures for the period ending December 31, 2025 and continuing to 
provide the pre-ASU disclosures for the prior periods, or may apply the amendments retrospectively by providing the revised disclosures for all period 
presented. The Company expects this ASU to impact disclosures with no impact to the Company’s consolidated financial statements.
 
In November 2024, the FASB issued ASU 2024-03, Income Statement-Reporting Comprehensive Income-Expense Disaggregation Disclosures 
(Subtopic 220-40): Disaggregation of Income Statement Expenses, requiring public entities to disclose additional information about specific expense 
categories in the notes to the financial statements on an interim and annual basis. ASU 2024-03 is effective for fiscal years beginning after December 15, 
2026, and for interim periods beginning after December 15, 2027, with early adoption permitted. The Company is currently evaluating the impact of 
adopting ASU 2024-03.
Other new pronouncements issued but not effective until after December 31, 2024 are not expected to have a material impact on the Company’s 
consolidated financial statements.
3. INVENTORIES 
Inventories as of December 31 were as follows (in thousands):
 
 
 
2024
   
2023
 
Raw materials
  $
78,934    $
88,716 
Work-in-process
   
16,389     
10,525 
Finished goods
   
10,709     
7,338 
 
  $
106,032    $
106,579 
 

VICOR CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
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4. INVESTMENTS
As of December 31, 2024 and 2023, the Company held one auction rate security with a par value of $3,000,000 and an estimated fair value of 
approximately $2,641,000 and $2,530,000, respectively, purchased through and held in custody by a broker-dealer affiliate of Bank of America, N.A., that 
has experienced failed auctions (the “Failed Auction Security”) since February 2008. The Failed Auction Security held by the Company is Aaa/AA+ rated 
by major credit rating agencies, is collateralized by student loans, and is guaranteed by the U.S. Department of Education under the Federal Family 
Education Loan Program. Management is not aware of any reason to believe the issuer of the Failed Auction Security is presently at risk of default. 
Through December 31, 2024, the Company has continued to receive interest payments on the Failed Auction Security in accordance with the terms of its 
indenture. Management believes the Company ultimately should be able to liquidate the Failed Auction Security without significant loss primarily due to 
the overall quality of the issue held and the collateral securing the substantial majority of the underlying obligation.  Changes in the estimated fair value of 
the Failed Auction Security have not been significant in the past three years.  However, current conditions in the auction rate securities market have led 
management to conclude the recovery period for the Failed Auction Security exceeds 12 months. As a result, the Company continued to classify the Failed 
Auction Security as long-term as of December 31, 2024.
At this time, the Company has no intent to sell the Failed Auction Security and does not believe it is more likely than not the Company will be 
required to sell the security. If current market conditions deteriorate further, the Company may be required to record additional unrealized losses. If the 
credit rating of the security deteriorates, the Company may be required to adjust the carrying value of the investment through impairment charges recorded 
in the Consolidated Statement of Operations, and any such impairment adjustments may be material.
Details of our investments are as follows (in thousands):
 
 
 
December 31, 2024
 
 
 
Cash and Cash
   
Long-Term
 
Measured at fair value:
 
Equivalents
   
Investment
 
Available-for-sale debt securities:
 
    
   
Money Market Funds
  $
246,745    $
— 
Failed Auction Security
   
—     
2,641 
Total
   
246,745     
2,641 
 
 
    
   
Other measurement basis:
 
    
   
Cash on hand
   
30,528     
— 
Total
  $
277,273    $
2,641 
 
 
 
December 31, 2023
 
 
 
Cash and Cash
   
Long-Term
 
Measured at fair value:
 
Equivalents
   
Investment
 
Available-for-sale debt securities:
 
    
   
Money Market Funds
  $
209,489    $
— 
Failed Auction Security
   
—     
2,530 
Total
   
209,489     
2,530 
Other measurement basis:
 
    
   
Cash on hand
   
32,730     
— 
Total
  $
242,219    $
2,530 
 
The following is a summary of the available-for-sale securities (in thousands):
 

VICOR CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
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Gross
   
Gross
   
Estimated
 
 
 
 
    Unrealized     Unrealized    
Fair
 
December 31, 2024
 
Cost
   
Gains
   
Losses
   
Value
 
Failed Auction Security
  $
3,000    $
—    $
359    $
2,641 
 
 
    
    
    
   
December 31, 2023
 
    
    
    
   
Failed Auction Security
  $
3,000    $
—    $
470    $
2,530 
 
As of December 31, 2024 and 2023, the Failed Auction Security had been in an unrealized loss position for greater than 12 months.  
The amortized cost and estimated fair value of the available-for-sale securities on December 31, 2024, by type and contractual maturities, are shown 
below (in thousands):
Failed Auction Security:
 
 
 
 
   
Estimated
 
 
 
Cost
   
Fair Value
 
Due in seventeen years
  $
3,000    $
2,641 
 
5. FAIR VALUE MEASUREMENTS
The Company accounts for certain financial assets at fair value, defined as the price that would be received to sell an asset or paid to transfer a 
liability (i.e., an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on 
the measurement date.  As such, fair value is a market-based measurement that should be determined based on assumptions market participants would use 
in pricing an asset or liability.  A three-level hierarchy is used to show the extent and level of judgment used to estimate fair value measurements.
Assets and liabilities measured at fair value on a recurring basis included the following as of December 31, 2024 (in thousands):
 
 
 
Using
   
 
 
 
 
 
   
Significant
   
 
   
 
 
 
 
Quoted Prices
   
Other
   
Significant
   
 
 
 
 
in Active
   
Observable
   
Unobservable
   
Total Fair
 
 
 
Markets
   
Inputs
   
Inputs
   
Value as of
 
 
 
(Level 1)
   
(Level 2)
   
(Level 3)
   
December 31, 2024
 
Cash equivalents:
 
 
   
 
   
 
   
 
 
Money market funds
  $
246,745    $
—    $
—    $
246,745 
Long-term investment:
 
    
    
    
   
Failed Auction Security
   
—     
—     
2,641     
2,641 
 
Assets measured at fair value on a recurring basis included the following as of December 31, 2023 (in thousands):
 
 
 
Using
   
 
 
 
 
 
   
Significant
   
 
   
 
 
 
 
Quoted Prices
   
Other
   
Significant
   
 
 
 
 
in Active
   
Observable
   
Unobservable
   
Total Fair
 
 
 
Markets
   
Inputs
   
Inputs
   
Value as of
 
 
 
(Level 1)
   
(Level 2)
   
(Level 3)
   
December 31, 2023
 
Cash equivalents:
 
 
   
 
   
 
   
 
 
Money market funds
  $
209,489    $
—    $
—    $
209,489 
Long-term investment:
 
 
   
 
   
 
   
   
Failed Auction Security
   
—     
—     
2,530     
2,530 
 

VICOR CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
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The change in the estimated fair value calculated for the investment valued on a recurring basis utilizing Level 3 inputs (i.e., the Failed Auction 
Security) for the year ended December 31, 2024 was as follows (in thousands):
 
Balance at the beginning of the period
 
$
2,530 
Gain included in Other comprehensive income
 
 
111 
Balance at the end of the period
 
$
2,641 
 
Management utilized a probability weighted discounted cash flow model to determine the estimated fair value of this investment as of December 31, 
2024.
6.
PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment are stated at cost and are depreciated and amortized over a period of three to 39 years generally under the straight-line 
method for financial reporting purposes and accelerated methods for income tax purposes.
Property, plant and equipment as of December 31 were as follows (in thousands):
 
 
 
2024
   
2023
 
Land
  $
3,600    $
3,600 
Buildings and improvements
   
86,502     
82,861 
Machinery and equipment
   
298,688     
282,084 
Furniture and fixtures
   
14,567     
14,346 
Construction in-progress and deposits
   
8,229     
17,723 
 
   
411,586     
400,614 
Accumulated depreciation and amortization
   
(265,248)    
(250,315)
Right of use asset - net
   
6,367     
7,390 
Net balance
  $
152,705    $
157,689 
 
Depreciation expense for the years ended December 31, 2024, 2023 and 2022 was approximately $18,583,000, $17,174,000, and $13,701,000, 
respectively. As of December 31, 2024, the Company had approximately $12,669,000 of capital expenditure commitments.
 
On August 9, 2022, Congress enacted a 25 percent tax credit for investment in semiconductor manufacturing to incentivize domestic semiconductor 
production. The Advanced Manufacturing Investment Tax Credit ("ITC") was enacted as part of the Creating Helpful Incentives to Produce 
Semiconductors Act in response to supply chain disruptions. 
 
The Company had undergone a study of its 2024 and 2023 capital expenditures to determine which additions would qualify under the ITC guidance 
and which would not. The Company believes that it does comply with the grant conditions supported by the study and that the grant will be received based 
on meeting these conditions.
 
The Company recorded in the years ended December 31, 2024 and 2023 an Other current asset for the associated value of the ITC credit receivable 
of $6,274,000 and $13,248,000, respectively, with a corresponding offset to the Property, plant and equipment line item on its Consolidated Balance Sheet.  
The Company expects to receive the ITC credit next year in the form of a cash refund.
 
 
7. INTANGIBLE ASSETS
Patent costs, which are included in Other assets in the accompanying Consolidated Balance Sheets, as of December 31 were as follows (in 
thousands):
 

VICOR CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
49
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2024
   
2023
 
Patent costs
  $
637    $
900 
Accumulated amortization
   
(488)    
(708)
   $
149    $
192 
 
Definite lived intangible assets, such as patent rights, are amortized and tested for impairment if a triggering event occurs.
Amortization expense was approximately $43,000, $66,000 and $75,000 in 2024, 2023, and 2022, respectively. 
8. PRODUCT WARRANTIES
Product warranty activity for the years ended December 31 was as follows (in thousands):
 
 
 
2024
   
2023
   
2022
 
Balance at the beginning of the period
  $
1,034    $
497    $
292 
Accruals for warranties for products sold in the period
   
507     
1,353     
376 
Fulfillment of warranty obligations
   
(760)    
(815)    
(131)
Revisions of estimated obligations
   
(33)    
(1)    
(40)
Balance at the end of the period
  $
748    $
1,034    $
497 
 
9. STOCKHOLDERS' EQUITY
Each share of Common Stock entitles the holder thereof to one vote on all matters submitted to the stockholders.
Each share of Class B Common Stock entitles the holder thereof to ten votes on all such matters.
Shares of Class B Common Stock are not transferable by a stockholder except to or among the stockholder’s spouse, certain of the stockholder’s 
relatives, and certain other defined transferees. Class B Common Stock is not listed or traded on any exchange or in any market. Class B Common Stock is 
convertible at the option of the holder thereof at any time and without cost to the stockholder into shares of Common Stock on a one-for-one basis.
In November 2000, the Board of Directors of the Company authorized the repurchase of up to $30,000,000 of the Company's Common Stock (the 
“November 2000 Plan”). In July 2024, the Board of Directors of the Company authorized the repurchase of up to $100,000,000 of the Company's Common 
Stock (the “New Repurchase Authorization”). The New Repurchase Authorization replaces the November 2000 Plan in its entirety and no further 
repurchases will be made pursuant to the November 2000 Plan. There were no repurchases under the November 2000 Plan in 2024, 2023 or 2022. 
Repurchases of approximately $497,000 were made under the New Purchase Authorization in 2024. On December 31, 2024, the Company had 
approximately $99,503,000 available for share repurchases under the New Repurchase Authorization.
Dividends are declared at the discretion of the Company’s Board of Directors and depend on actual cash from operations, the Company’s financial 
condition and capital requirements and any other factors the Company’s Board of Directors may consider relevant at the time. Common Stock and Class B 
Common Stock participate in dividends and earnings equally.
On December 31, 2024, 2023, and 2022, there were 19,975,730, 20,703,238, and 21,080,950, respectively, shares of Vicor Common Stock reserved 
for issuance upon exercise of Vicor stock options, upon conversion of Class B Common Stock and under the ESPP.
10.  SEGMENT INFORMATION
 
The Company has determined its Chief Operating Decision Maker (“CODM”) to be the Chief Executive Officer (“CEO”). The CEO reviews 
financial information presented on a consolidated basis for purposes of managing the business, 

VICOR CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
50
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allocating resources, making operating decisions and assessing financial performance.  The Company is organized and operates as single operating and 
reportable segment. The CODM assesses performance for the segment and decides how to allocate resources based on consolidated net income. The 
CODM manages the business using consolidated expense information for the single operating segment.  All expense categories on the Consolidated 
Statements of Operations are significant and there are no other significant segment expenses that would require disclosure.
The Company offers a comprehensive range of modular building blocks enabling rapid design of a power system specific to a customer’s precise 
needs.  Based on design, performance, and form factor considerations, as well as the range of evolving applications for which the products are appropriate, 
the Company categorizes its product portfolios as either Advanced Products or Brick Products, which constitute one segment.  Both product lines are built 
in the Company’s manufacturing facility in Andover, Massachusetts employing similar processing and production techniques, and are supported by the 
same sales and marketing organizations. The measure of segment assets is reported on the balance sheet as total consolidated assets.   
The following tables present the Company’s net revenues disaggregated by geography with respect to the Company’s single operating segment for 
the years ended December 31, 2024, 2023 and 2022 (in thousands): 
 
 
 
Year Ended December 31,
 
 
 
2024
   
2023
   
2022
 
United States
  $
185,834    $
149,456    $
129,422 
Europe
   
41,803     
59,742     
38,378 
Asia Pacific
   
129,981     
192,267     
228,335 
All other
   
1,440     
3,594     
2,944 
 
  $
359,058    $
405,059    $
399,079 
The Company's long-lived tangible assets, as well as the Company's operating lease right-of-use assets recognized on the Consolidated Balance 
Sheets were located as follows:
 
 
 
As of December 31,
 
 
 
2024
   
2023
 
 
 
(in thousands)
 
United States
  $
146,472    $
151,439 
International
   
6,233     
6,250 
See the consolidated financial statements and footnotes for other financial information regarding the Company’s operating segment.
 
11. REVENUES
The following tables present the Company’s net revenues disaggregated by geography based on the location of the customer, by product line (in 
thousands):
 
 
 
Year Ended December 31, 2024
 
 
 
Brick
Products
   
Advanced
Products
   
Total
 
United States
  $
85,347    $
100,487    $
185,834 
Europe
   
27,088     
14,715     
41,803 
Asia Pacific
   
48,347     
81,634     
129,981 
All other
   
947     
493     
1,440 
 
  $
161,729    $
197,329    $
359,058 
 

VICOR CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
51
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Year Ended December 31, 2023
 
 
 
Brick
Products
   
Advanced
Products
   
Total
 
United States
  $
82,400    $
67,056    $
149,456 
Europe
   
31,792     
27,950     
59,742 
Asia Pacific
   
63,631     
128,636     
192,267 
All other
   
3,343     
251     
3,594 
 
  $
181,166    $
223,893    $
405,059 
 
 
 
Year Ended December 31, 2022
 
 
 
Brick
Products
   
Advanced
Products
   
Total
 
United States
  $
76,306    $
53,116    $
129,422 
Europe
   
27,856     
10,522     
38,378 
Asia Pacific
   
49,076     
179,259     
228,335 
All other
   
2,520     
424     
2,944 
 
  $
155,758    $
243,321    $
399,079 
 
The following tables present the Company’s net revenues disaggregated by the category of revenue, by product line (in thousands):
 
 
 
Year Ended December 31, 2024
 
 
 
Brick
Products
   
Advanced
Products
   
Total
 
Direct customers, contract manufacturers and non-stocking
   distributors
  $
88,144    $
113,359    $
201,503 
Stocking distributors, net of sales allowances
   
72,713     
31,061     
103,774 
Non-recurring engineering
   
872     
4,874     
5,746 
Royalties
   
—     
46,595     
46,595 
Other
   
—     
1,440     
1,440 
 
  $
161,729    $
197,329    $
359,058 
 
 
 
Year Ended December 31, 2023
 
 
 
Brick
Products
   
Advanced
Products
   
Total
 
Direct customers, contract manufacturers and non-stocking
   distributors
  $
113,448    $
163,549    $
276,997 
Stocking distributors, net of sales allowances
   
66,544     
29,893     
96,437 
Non-recurring engineering
   
1,174     
13,421     
14,595 
Royalties
   
—     
15,872     
15,872 
Other
   
—     
1,158     
1,158 
 
  $
181,166    $
223,893    $
405,059 
 

VICOR CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
52
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Year Ended December 31, 2022
 
 
 
Brick
Products
   
Advanced
Products
   
Total
 
Direct customers, contract manufacturers and
   non-stocking distributors
  $
102,905    $
216,685    $
319,590 
Stocking distributors, net of sales allowances
   
51,819     
13,831     
65,650 
Non-recurring engineering
   
1,034     
9,933     
10,967 
Royalties
   
—     
2,801     
2,801 
Other
   
—     
71     
71 
 
  $
155,758    $
243,321    $
399,079 
 
The following table presents the changes in certain contract assets and (liabilities) (in thousands):
 
 
 
December 31, 
2024
   
December 31, 
2023
   
Change
 
Short-term deferred revenue and customer prepayments
  $
(5,312)   $
(3,157)   $
(2,155)
Long-term deferred revenue
   
—     
(1,020)    
1,020 
Sales allowances
   
(1,667)    
(3,482)    
1,815 
 
During 2024, 2023, and 2022, one customer accounted for approximately 12.1%, 10.7%, and 12.4% of net revenues, respectively.
Net revenues from customers in China (including Hong Kong), accounted for approximately 12.6% of total net revenues in 2024, 17.7% in 2023 
and 18.8% in 2022, respectively.
12.  STOCK-BASED COMPENSATION AND EMPLOYEE BENEFIT PLANS
Vicor currently grants options for the purchase of Common Stock (i.e., “stock options”) under the following equity compensation plans that are 
stockholder-approved:
Amended and Restated 2000 Stock Option and Incentive Plan, as amended and restated (the “2000 Plan”)  — Under the 2000 Plan, the Board of 
Directors or the Compensation Committee of the Board of Directors may grant stock incentive awards based on the Company’s Common Stock, including 
stock options, stock appreciation rights, restricted stock, performance shares, unrestricted stock, deferred stock, and dividend equivalent rights.  Awards 
may be granted to employees and other key persons, including non-employee directors.  Incentive stock options may be granted to employees at a price at 
least equal to the fair market value per share of the Common Stock on the date of grant, and non-qualified options may be granted to non-employee 
directors at a price at least equal to 85% of the fair market value of the Common Stock on the date of grant.  A total of 10,000,000 shares of Common Stock 
have been reserved for issuance under the 2000 Plan.  The period of time during which an option may be exercised and the vesting periods are determined 
by the Compensation Committee.  The term of each option may not exceed 10 years from the date of grant and have a vesting period of five years.
Vicor Corporation 2017 Employee Stock Purchase Plan (the “Plan” or the “ESPP”). Under the ESPP, the Company has reserved 2,000,000 shares 
of Common Stock for issuance to eligible employees who elect to participate.  The ESPP is intended to qualify as an “employee stock purchase plan” under 
Section 423 of the Internal Revenue Code.  The ESPP operates in successive periods of approximately six months, each referred to as an “offering period.” 
Generally, offering periods commence on or around September 1 and March 1 and end on or around the following February 28 or August 31, respectively. 
Under the ESPP, an option is granted to participating employees on the first day of an offering period to purchase shares of the Company’s Common Stock 
at the end of that offering period at a purchase price equal to 85% of the lesser of the fair market value of a share of Common Stock on either the first day 
or the last day of that offering period.  The purchase of shares is funded by means of periodic payroll deductions, which may not exceed 15.0% of the 
employee’s eligible compensation, as defined in the Plan. Among other provisions, the Plan limits the number of shares that can be purchased by a 
participant during any offering period and cumulatively for any calendar year.

VICOR CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
53
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Stock-based compensation expense for the years ended December 31 was as follows (in thousands):
 
 
 
2024
   
2023
   
2022
 
Cost of product revenues
  $
3,243    $
2,429    $
1,648 
Selling, general and administrative
   
7,818     
6,829     
5,735 
Research and development
   
4,241     
3,611     
2,881 
Total stock-based compensation
  $
15,302    $
12,869    $
10,264 
 
Compensation expense by type of award for the years ended December 31 was as follows (in thousands):
 
 
 
2024
   
2023
   
2022
 
Stock options
  $
14,231    $
11,585    $
9,093 
ESPP
   
1,071     
1,284     
1,171 
Total stock-based compensation
  $
15,302    $
12,869    $
10,264 
 
All time-based (i.e., non-performance-based) options for the purchase of Vicor common stock are granted with an exercise price equal to or greater 
than the market price for Vicor Common Stock at the date of the grant. The fair value for non-performance-based stock options awarded under the 2000 
Plan for the years shown below was estimated at the date of grant using the Black-Scholes option pricing model with the following weighted-average 
assumptions:
 
 
 
2024
   
2023
   
2022
 
 Risk-free interest rate
   
4.6%    
3.7%    
2.8%
 Expected dividend yield
   
— 
   
— 
   
— 
 Expected volatility
   
58%    
54%    
51%
 Expected term (years)
   
4.1 
   
4.2 
   
4.4 
 
Risk-free interest rate:
The Company uses the yield on zero-coupon U.S. Treasury “Strip” securities for a period that is commensurate with the expected term assumption 
for each vesting period. 
Expected dividend yield:
The Company determines the expected dividend yield by annualizing the most recent prior cash dividends declared by the Company’s Board of 
Directors, if any, and dividing that result by the closing stock price on the date of that dividend declaration. Dividends are not paid on options. 
Expected volatility:
Vicor uses historical volatility to estimate the grant-date fair value of the options, using the expected term for the period over which to calculate the 
volatility (see below). The Company does not expect its future volatility to differ from its historical volatility. The computation of the Company’s volatility 
is based on a simple average calculation of monthly volatilities over the expected term.
Expected term:
The Company uses historical employee exercise and option expiration data to estimate the expected term assumption for the Black-Scholes grant-
date valuation. The Company believes this historical data is currently the best estimate of the expected term of options, and all groups of the Company’s 
employees exhibit similar exercise behavior. 
Forfeiture rate:
 The amount of stock-based compensation recognized during a period is based on the value of the portion of the awards 

VICOR CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
54
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that are ultimately expected to vest. Forfeitures are estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ 
from those estimates. The term “forfeitures” is distinct from “cancellations” or “expirations” and represents only the unvested portion of the surrendered 
option. The forfeiture analysis is re-evaluated annually and the forfeiture rate is adjusted as necessary.  Ultimately, the actual expense recognized over the 
vesting period will only be for those shares that vest.
Based on an analysis of historical forfeitures, the Company applied an annual forfeiture rate of 4.30% in 2024, estimating approximately 88% of its 
options would actually vest.  For 2023 and 2022, the Company applied an annual forfeiture rate of 5.00% and 5.35%, respectively, estimating 
approximately 86% and 85%, respectively, of its options would actually vest.
A summary of the activity under the 2000 Plan as of December 31, 2024 and changes during the year then ended, is presented below (in thousands 
except for share and weighted-average data):
 
 
 
Options
Outstanding
   
Weighted-
Average
Exercise
Price
   
Weighted-
Average
Remaining
Contractual
Life in Years
   
Aggregate
Intrinsic
Value
 
 
 
    
    
    
   
Outstanding on December 31, 2023
   
2,555,242    $
43.51   
    
   
Granted
   
1,159,611    $
34.26   
    
   
Forfeited and expired
   
(155,478)   $
52.38   
    
   
Exercised
   
(642,468)   $
9.23   
    
   
Outstanding on December 31, 2024
   
2,916,907    $
46.91     
4.31    $
23,544 
Exercisable on December 31, 2024
   
681,949    $
58.76     
3.36    $
3,350 
Vested or expected to vest as of December 31,
   2024 (1)
   
2,735,891    $
47.33     
4.25    $
21,697 
 
(1)
In addition to the vested options, the Company expects a portion of the unvested options to vest at some point in the future. The number of options 
expected to vest is calculated by applying an estimated forfeiture rate to the unvested options.
As of December 31, 2023 and 2022, the Company had options exercisable for 973,894 and 1,046,092 shares, respectively, for which the weighted 
average exercise prices were $27.39 and $18.26, respectively.
During the years ended December 31, 2024, 2023, and 2022, the total intrinsic value of Vicor options exercised (i.e., the difference between the 
market price at exercise and the price paid by the employee to exercise the options) was approximately $17,460,000, $14,396,000, and $7,252,000, 
respectively. The total amount of cash received by the Company from options exercised in 2024, 2023, and 2022 was $5,929,000, $7,798,000, and 
$1,634,000, respectively. The total grant-date fair value of stock options granted during the years ended December 31, 2024, 2023, and 2022 was 
approximately $19,283,000, $17,957,000, and $15,087,000, respectively. 
As of December 31, 2024, there was approximately $26,273,000 of total unrecognized compensation cost related to unvested awards for Vicor. That 
cost is expected to be recognized over a weighted-average period of 2.0 years for those awards. The expense will be recognized as follows: $12,878,000 in 
2025, $7,537,000 in 2026, $3,911,000 in 2027, $1,614,000 in 2028, and $333,000 in 2029. 
The weighted-average fair value of Vicor options granted was $16.63, $19.56, and $26.53, in 2024, 2023, and 2022, respectively.
401(k) Plan
The Company sponsors a savings plan available to all domestic employees, which qualifies under Section 401(k) of the Internal Revenue Code.  
Employees may contribute to the plan in amounts representing from 1% to 80% of their pre-tax 

VICOR CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
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salary, subject to statutory limitations. The Company matches employee contributions to the plan at a rate of 50%, up to the first 6% of an employee’s 
compensation. The Company’s matching contributions currently vest at a rate of 20% per year, based upon years of service. The Company’s contributions 
to the plan were approximately $2,171,000, $2,317,000, and $2,211,000 in 2024, 2023, and 2022, respectively.
Stock Bonus Plan
Under the Company’s 1985 Stock Bonus Plan, as amended, shares of Common Stock may be awarded to employees from time to time as 
determined by the Board of Directors. On December 31, 2024, 109,964 shares were available for further award. All shares awarded to employees under this 
plan have vested. No further awards are contemplated under this plan at the present time.
13.  LEASES
All of the Company’s leases are classified as operating leases.  The majority of the Company’s leases are for office and manufacturing space, along 
with several automobiles and certain equipment. Leases with initial terms of less than twelve months are not recorded on the balance sheet.  Expense for 
these leases is recognized on a straight-line basis over the lease term.  The Company’s leases have remaining terms of less than one year to just over 11 
years.  The majority of the Company’s leases do not have options to renew, although several have renewal terms to extend the lease for one five-year term, 
and one lease contains two five-year renewal options.  None of the renewal options are included in determining the term of the lease, used for calculating 
the associated lease liabilities. None of the Company’s leases include variable payments, residual value guarantees or restrictive covenants.   A number of 
the Company’s leases for office and manufacturing space include provisions for common area maintenance (“CAM”). The Company accounts for CAM 
separately from lease payments, and therefore costs for CAM are not included in the determination of lease liabilities. The Company is a party to one 
arrangement as the lessor, for its facility located in Sunnyvale, California, with a third party. The initial term of the lease agreement expired on May 31, 
2024 and was extended for an additional eighty-four months, commencing June 1, 2024 and ending May 31, 2031.
As of December 31, 2024 and 2023, the balance of right of use (“ROU”) assets was approximately $6,367,000 and $7,390,000, respectively. As of 
December 31, 2024, the balances of short-term and long-term lease liabilities were approximately $1,716,000 and $5,620,000, respectively.  As of 
December 31, 2023, the balances of short-term and long-term lease liabilities were approximately $1,864,000 and $6,364,000, respectively.  For the year 
ended December 31, 2024, the Company recorded operating lease cost, including short-term lease cost, of approximately $2,108,000 ($2,138,000 in 2023).  
The ROU assets are included in “Property, plant and equipment, net” in the accompanying Consolidated Balance Sheets.
The maturities of the Company’s lease liabilities are as follows (in thousands):
 
2025
 
$
2,009 
2026
 
 
1,389 
2027
 
 
1,031 
2028
 
 
846 
2029
 
 
644 
Thereafter
 
 
2,697 
 Total lease payments
 
$
8,616 
 Less: Imputed interest
 
 
1,280 
 Present value of lease liabilities
 
$
7,336 
 
As of December 31, 2024 and 2023, the weighted-average remaining lease term was 6.7 years and 6.8 years, respectively, and the weighted-average 
discount rate was 4.45% and 4.22%, respectively, for the Company’s operating leases.  The Company developed the discount rates used based on a Secured 
Overnight Financing Rate (“SOFR”) over a term approximating the term of the related lease, plus an additional interest factor, which was generally 1.25%.
For the years ended December 31, 2024 and December 31, 2023, the Company paid approximately $2,194,000 and $2,096,000, respectively, for 
amounts included in the measurement of lease liabilities through operating cash flows. The 

VICOR CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
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Company obtained approximately $902,000 and $1,180,000 in ROU assets in exchange for $896,000 and $1,165,000 of new operating lease liabilities for 
the years ended December 31, 2024 and December 31, 2023, respectively.
The maturities of the lease payments to be received by the Company under the lease agreement for its leased facility in California are as follows (in 
thousands):
 
 
 
   
2025
 
$
1,111 
2026
 
 
1,145 
2027
 
 
1,179 
2028
 
 
1,214 
2029
 
 
1,251 
Thereafter
 
 
1,832 
Total lease payments to be received
 
$
7,732 
 
The Company recorded net lease income under this lease of approximately $992,000, $792,000, and $792,000 for the years ended December 31, 
2023, 2022, and 2021, respectively.
14.  OTHER INCOME (EXPENSE), NET
The components of Other income (expense), net for the years ended December 31 were as follows (in thousands):
 
 
 
2024
   
2023
   
2022
 
Interest income, net
  $
11,468    $
8,217    $
1,313 
Rental income, net
 
992   
792   
792  
Foreign currency losses, net
   
(622)    
(161)    
(653)
Other, net
   
(41)  
38     
34 
 
  $
11,797    $
8,886    $
1,486 
 
 
15.  INCOME TAXES
The tax provision includes estimated federal, state and foreign income taxes on the Company's pre-tax income. The tax provisions also may include 
discrete items, generally related to increases or decreases in tax reserves, tax provision versus. tax return differences and accrued interest for potential 
liabilities.
The reconciliation of the federal statutory rate on the income before income taxes to the effective income tax rate for the years ended December 31 
is as follows:
 
 
 
2024
   
2023
   
2022
 
Statutory federal tax rate
   
21.0%    
21.0%    
21.0%
State income taxes, net of federal income tax benefit
   
9.6 
   
(0.6)    
(2.4)
Increase in valuation allowance
   
87.5 
   
7.4 
   
14.5 
Stock-based compensation
   
(25.9)    
(3.3)    
(3.8)
Foreign derived intangible income
   
(14.0)    
(6.0)    
(11.9)
Other permanent items
   
4.7 
   
0.8 
   
1.9 
Tax credits
   
(32.5)    
(5.9)    
(9.9)
Provision vs. tax return differences
   
(5.5)    
(1.9)    
2.1 
Foreign rate differential and deferred items
   
0.2 
   
0.1 
   
(0.2)
Other
   
(3.6)    
(0.6)    
0.1 
 
   
41.5%    
11.0%    
11.4%
 

VICOR CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
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In 2024, the Company utilized tax credits to partially offset federal income tax expense. In 2023 and 2022, the Company utilized net operating loss 
carryforwards and tax credits to partially offset federal income tax expense.
For financial reporting purposes, income before income taxes for the years ended December 31 include the following components (in thousands):
 
 
 
2024
   
2023
   
2022
 
Domestic
  $
10,006    $
59,528    $
29,157 
Foreign
   
481     
716     
(470)
 
  $
10,487    $
60,244    $
28,687 
 
Significant components of the provision (benefit) for income taxes for the years ended December 31 are as follows (in thousands):
 
 
 
2024
   
2023
   
2022
 
Current:
 
 
   
 
   
 
 
Federal
  $
3,229    $
4,814    $
2,105 
State
   
905     
1,655     
955 
Foreign
   
208     
209     
298 
 
   
4,342     
6,678     
3,358 
Deferred:
 
    
    
   
Foreign
   
6     
(34)    
(97)
  
   
6     
(34)    
(97)
  
  $
4,348    $
6,644    $
3,261 
 
Significant components of the Company’s deferred tax assets and liabilities as of December 31 were as follows (in thousands):
 
 
 
2024
   
2023
 
Deferred tax assets:
 
    
   
Research and development tax credit carryforwards
  $
27,721    $
29,619 
Stock-based compensation
   
8,613     
5,709 
Inventory reserves
   
2,628     
3,363 
Investment tax credit carryforwards
   
1,290     
2,659 
UNICAP
   
2,833     
1,139 
Vacation accrual
   
1,344     
1,319 
Lease liabilities
   
1,331     
1,388 
Capitalized research and development
   
27,043     
22,621 
Other
   
8,738     
3,235 
Total deferred tax assets
   
81,541     
71,052 
Less: Valuation allowance for deferred tax assets
   
(61,531)    
(52,291)
Net deferred tax assets
   
20,010     
18,761 
Deferred tax liabilities:
 
    
   
Depreciation
   
(17,345)    
(16,139)
ROU assets
   
(1,096)    
(1,201)
Prepaid expenses
   
(1,239)    
(1,048)
Other
   
(69)    
(77)
Total deferred tax liabilities
   
(19,749)    
(18,465)
Net deferred tax assets
  $
261    $
296 
 
As of December 31, 2024, the Company had a valuation allowance of approximately $61,531,000 against all net domestic deferred tax assets, for 
which realization cannot be considered more likely than not at this time.  Management 

VICOR CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
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assesses the need for the valuation allowance on a quarterly basis. In assessing the need for a valuation allowance, the Company considers all positive and 
negative evidence, including scheduled reversals of deferred tax liabilities, projected future taxable income, tax planning strategies, and past financial 
performance. Despite recent positive operating results, the Company faces uncertainties in forecasting its operating results due to the unpredictability of 
customer orders in certain markets, product transitions, new program introductions and adoption times of new technology offerings . This operating 
uncertainty also makes it difficult to predict the availability and utilization of tax benefits over the next several years. As a result, management has 
concluded, as of December 31, 2024, it is more likely than not the Company’s net domestic deferred tax assets will not be realized, and a full valuation 
allowance against all net domestic deferred tax assets is still warranted as of December 31, 2024. The valuation allowance against these deferred tax assets 
may require adjustment in the future based on changes in the mix of temporary differences, changes in tax laws, and operating performance. If the positive 
operating results continue, the Company’s concerns about industry uncertainty, product transitions, new program introductions and adoption times of new 
technology offerings are resolved, and the Company believes future taxable income can be more reliably forecasted, the Company may release all or a 
portion of the valuation allowance in the near-term. Certain state tax credits, though, will likely never be released by the valuation allowance. If and when 
the Company determines the valuation allowance should be released (i.e., reduced), the adjustment would result in a tax benefit reported in that period’s 
Consolidated Statements of Operations, the effect of which would be an increase in reported net income.
As of December 31, 2024, the Company had no federal net operating loss carryforwards available, and had state net operating losses of 
approximately $4,000, which will begin to expire in 2030. The Company has federal and state research and development tax credit carryforwards of 
$12,344,000 and $21,892,000, which will begin to expire in 2039 and 2025, respectively.
A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in thousands):
 
 
 
2024
   
2023
   
2022
 
Balance on January 1
  $
4,184    $
3,474    $
3,246 
Additions based on tax positions related to the current year
   
698     
650     
319 
Additions (reductions) for tax positions of prior years
   
35     
86     
(54)
Lapse of statute
   
(332)    
(26)    
(37)
Balance on December 31
  $
4,585    $
4,184    $
3,474 
 
The Company has reviewed the tax positions taken, or to be taken, in its tax returns for all tax years currently open to examination by a taxing 
authority.  The total amount of unrecognized tax benefits, that is the aggregate tax effect of differences between tax return positions and the benefits 
recognized in the Company’s financial statements, as of December 31, 2024, 2023, and 2022 of $4,585,000, $4,184,000, and $3,474,000, respectively, if 
recognized, may decrease the Company’s income tax provision and effective tax rate.  None of the unrecognized tax benefits as of December 31, 2024 are 
expected to significantly change during the next twelve months.  
The Company recognizes accrued interest and penalties, if any, related to unrecognized tax benefits as a component of income tax expense.  During 
the years ended December 31, 2024, 2023, and 2022, the Company recognized approximately $36,000, $23,000, and $17,000, respectively, in net interest 
expense.  As of December 31, 2024 and 2023, the Company had accrued approximately $52,000 and $67,000, respectively, for the potential payment of 
interest. 
The Company files income tax returns in the United States and various foreign tax jurisdictions. These tax returns are generally open to examination 
by the relevant tax authorities from three to seven years from the date they are filed. The tax filings relating to the Company’s federal and state taxes are 
currently open to examination for tax years 2021 through 2023 and 2020 through 2023, respectively. In addition, the Company generated federal research 
and development credits in tax years 2005 through 2020. These years may also be subject to examination when the credits are carried forward and utilized 
in future years.  
The Company was informed in September 2021 by the Internal Revenue Service of their intention to examine the Company’s 2019 Federal income 
tax return.  The IRS has closed the examination of the 2019 tax year with no material adjustments. There are no other audits or examinations in process in 
any other jurisdiction.

VICOR CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
59
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As of December 31, 2024 and 2023, the Company has not provided deferred U.S. income taxes or foreign withholding taxes on temporary 
differences resulting from unremitted earnings for non-U.S. subsidiaries, which were not significant, and were permanently reinvested outside of the U.S. 
Upon repatriation of those earnings, in the form of dividends or otherwise, the Company could be subject to immaterial withholding taxes payable to the 
various foreign countries. 
16.  COMMITMENTS AND CONTINGENCIES
At December 31, 2024, the Company had approximately $12,669,000 of cancelable and non-cancelable capital expenditure commitments, 
principally for manufacturing equipment.
As previously reported in its Quarterly Reports on Form 10-Q and Annual Reports on Form 10-K, the Company is the defendant in a patent 
infringement lawsuit originally filed on January 28, 2011 by SynQor, Inc. (“SynQor”) in the U.S. District Court for the Eastern District of Texas (the 
“District Court”). SynQor alleged that certain Vicor products infringed certain United States Patents owned by SynQor. 
On October 26, 2022, after a trial in the District Court, the jury returned a verdict finding that the Company willfully infringed one SynQor patent, 
and awarding SynQor damages in the amount of $6,500,000. 
On May 20, 2024, the District Court issued an Amended Corrected Final Judgment, awarding SynQor actual damages of $6,500,000, enhanced 
damages of $4,500,000, costs in the amount of approximately $87,000, attorney fees in the amount of $9,500,000, and pre-judgment interest of 
approximately $5,400,000, for a total judgment of approximately $26,000,000. In addition, the District Court ordered that post-judgment interest would 
accrue at an amount of $2,323 per day starting on April 24, 2024 until the judgment is paid, compounded annually, and that additional post-judgment 
interest in the amount of $1,351 per day would accrue starting on May 20, 2024 until the judgment is paid, compounded annually. 
On May 22, 2024, the Company filed an appeal of the District Court’s judgment to the United States Court of Appeals for the Federal Circuit. That 
appeal remains pending. 
In accordance with applicable accounting standards, the Company recorded a litigation related accrual of $6,500,000 in the third quarter of 2022 and 
incremental litigation related accruals of $17,200,000 in the first quarter of 2024 and $2,300,000 in the second quarter of 2024 when the Amended 
Corrected Final Judgment was issued, for a total of $26,000,000, as its estimate based on the awarded judgments, including enhanced damages, pre-
judgment interest, costs and attorney fees. The final determination of the litigation related accrual amount will be subject to appeal and could differ from 
the recorded liability. 
Consistent with the court order, post-judgment interest will accrue on the pre-judgment amount until paid and the Company has recorded post 
judgment interest of approximately $992,000 for the year ended December 31, 2024, within the Selling, general and administrative expenses on the 
Statement of Operations and the associated Accrued litigation account. 
On July 11, 2024, purported stockholders of the Company filed a putative class action lawsuit in the U.S. District Court for the Northern District of 
California styled Pouladian et al. v. Vicor Corporation et al., case number 3:24-cv-04196. The suit was brought against the Company and the Company’s 
Chief Executive Officer, President and Chairman (the "Defendants"). The plaintiffs allege violations of Sections 10(b) and 20(a) of the Securities Exchange 
Act of 1934, as amended (the “Exchange Act”), due to allegedly false and misleading statements during earnings calls in 2023 about the Company’s 
commercial relationship with an existing customer. The complaint seeks damages, interest and attorneys’ fees and costs. The plaintiffs were appointed lead 
plaintiffs on October 24, 2024, and an amended complaint was filed on November 22, 2024. The Defendants filed their motion to dismiss the amended 
complaint on January 1, 2025. The plaintiffs’ response is due March 5, 2025, and the Defendants have until March 21, 2025 to file their reply. The 
Defendants believe the plaintiffs’ claims are without merit and intend to vigorously defend against the lawsuit.  
On July 25, 2024, a purported stockholder of the Company filed a putative class action lawsuit in the U.S. District Court for the District of 
Massachusetts styled Valiquette v. Vicor Corporation et al., case number 1:24-cv-11935. The suit was brought against the Company; the Company’s Chief 
Executive Officer, President and Chairman; the Company’s Chief Financial Officer, Treasurer, Secretary and Director; and the Company’s Vice President 
of Global Sales and Marketing and Director. The plaintiffs alleged violations of Sections 10(b) and 20(a) of the Exchange Act, due to allegedly false and 

VICOR CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
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misleading statements during earnings calls in 2023 about the Company’s commercial relationship with an existing customer. The complaint sought 
damages, interest and attorneys' fees and costs. On September 24, 2024, the class action lawsuit in the U.S. District Court for the District of Massachusetts 
was voluntarily dismissed, without prejudice.   
In addition, the Company is involved in certain other litigation and claims incidental to the conduct of its business, both as a defendant and a 
plaintiff. While the outcome of such other lawsuits and claims against the Company cannot be predicted with certainty, management does not expect such 
litigation or claims will have a material adverse impact on the Company’s financial position or results of operations.

 
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ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND  FINANCIAL DISCLOSURE
None.
ITEM 9A. CONTROLS AND PROCEDURES
Attached as exhibits to this Annual Report on Form 10-K are certifications of our Chief Executive Officer ("CEO") and Chief Financial Officer 
(“CFO”), which are required in accordance with Rule 13a-14 of the Exchange Act. This “Controls and Procedures” section includes information 
concerning the controls and controls evaluation referred to in the certifications.
(a) Evaluation of disclosure controls and procedures
As required by Rule 13a-15 under the Exchange Act, management, with the participation of our CEO and CFO, conducted an evaluation regarding 
the effectiveness of our disclosure controls and procedures, as of the end of the last fiscal year. The term "disclosure controls and procedures," as defined in 
Rules 13a-15(e) and 15d-15(e) under the Exchange Act, means controls and other procedures of a company that are designed to ensure that information 
required to be disclosed by a company in the reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported, 
within the time periods specified in the Securities and Exchange Commission's rules and forms. Disclosure controls and procedures include, without 
limitation, controls and procedures designed to ensure that information required to be disclosed by a company in the reports that it files or submits under 
the Exchange Act is accumulated and communicated to the Company's management, including its principal executive and principal financial officers, as 
appropriate to allow timely decisions regarding required disclosure. We recognize any controls and procedures, no matter how well designed and operated, 
can provide only reasonable assurance of achieving their objectives and we necessarily apply our judgment in evaluating the cost-benefit relationship of 
possible controls and procedures.  Based on the evaluation of the Company’s disclosure controls and procedures as of December 31, 2024, the CEO and 
CFO concluded, as of such date, the Company’s disclosure controls and procedures were effective at the reasonable assurance level.
(b) Management's Report on Internal Control Over Financial Reporting
Our management is responsible for establishing and maintaining adequate internal control over financial reporting to provide reasonable assurance 
regarding the reliability of our financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted 
accounting principles. Internal control over financial reporting includes those policies and procedures: (a) pertaining to the maintenance of records that in 
reasonable detail accurately and fairly reflect the transactions and dispositions of our assets; (b) providing reasonable assurance that transactions are 
recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and 
expenditures are being made only in accordance with authorizations of our management and Board of Directors; and (c) providing reasonable assurance 
regarding prevention or timely detection of unauthorized acquisition, use, or disposition of our assets that could have a material effect on our financial 
statements. 
Management assessed our internal control over financial reporting as of December 31, 2024, the end of our fiscal year. Management based its 
assessment on criteria established in Internal Control — Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the 
Treadway Commission (“COSO”). Management’s assessment included evaluation of such elements as the design and operating effectiveness of key 
financial reporting controls, process documentation, accounting policies, and our overall control environment.
Based on our assessment, management has concluded that our internal control over financial reporting was effective as of December 31, 2024.
The effectiveness of our internal control over financial reporting as of December 31, 2024 has been audited by KPMG LLP, our independent 
registered public accounting firm, as stated in their report which is included immediately below.

 
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Report of Independent Registered Public Accounting Firm
To the Stockholders and Board of Directors Vicor Corporation:
Opinion on Internal Control Over Financial Reporting
We have audited Vicor Corporation and subsidiaries' (the Company) internal control over financial reporting as of December 31, 2024, based on criteria 
established in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission. In our 
opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2024, based on criteria 
established in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission.
We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the consolidated 
balance sheets of the Company as of December 31, 2024 and 2023, the related consolidated statements of operations, comprehensive income, equity, and 
cash flows for each of the years in the three-year period ended December 31, 2024, and the related notes and financial statement schedules listed in Item 
15(a)(2) (collectively, the consolidated financial statements), and our report dated March 3, 2025 expressed an unqualified opinion on those consolidated 
financial statements.
Basis for Opinion
The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of 
internal control over financial reporting, included in the accompanying Management's Report on Internal Control Over Financial Reporting. Our 
responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit. We are a public accounting firm 
registered with the 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 audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable 
assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit of internal control over 
financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and 
testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audit also included performing such other 
procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.
Definition and Limitations of Internal Control Over Financial Reporting
A company’s internal control over financial reporting is a process 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. A company’s internal control 
over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly 
reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit 
preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are 
being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding 
prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial 
statements.
Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. 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.
/s/ KPMG LLP
Boston, Massachusetts 
March 3, 2025

 
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(c) Inherent Limitations on Effectiveness of Controls
The Company’s management, including the CEO and CFO, does not expect that our disclosure controls or our internal control over financial 
reporting will prevent or detect all errors and all fraud. A control system, no matter how well designed and operated, can provide only reasonable, not 
absolute, assurance that the control system’s objectives will be met. The design of a control system must reflect the fact that there are resource constraints, 
and the benefits of controls must be considered relative to their costs. Further, because of the inherent limitations in all control systems, no evaluation of 
controls can provide absolute assurance that misstatements due to error or fraud will not occur or that all control issues and instances of fraud, if any, 
within the Company have been detected. These inherent limitations include the realities that judgments in decision-making can be faulty and that 
breakdowns can occur because of simple error or mistake. Controls can also be circumvented by the individual acts of some persons, by collusion of two or 
more people, or by management override of the controls. The design of any system of controls is based in part on certain assumptions about the likelihood 
of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions. Projections of 
any evaluation of controls effectiveness to future periods are subject to risks. Over time, controls may become inadequate because of changes in conditions 
or deterioration in the degree of compliance with policies or procedures.
(d) Changes in Internal Control Over Financial Reporting
There was no change in our internal control over financial reporting that occurred during the fiscal quarter ended December 31, 2024, that has 
materially affected, or is reasonably likely to materially affect, the Company’s internal control over financial reporting.
ITEM 9B.  OTHER INFORMATION
(b) Except as set forth below, during the three months ended December 31, 2024, no director or Section 16 officer of the Company adopted or 
terminated a “Rule 10b5-1 trading arrangement” or “non-Rule 10b5-1 trading arrangement,” as each term is defined in Item 408(a) of Regulation S-K.  
On December 10, 2024, Patrizio Vinciarelli, Chairman of the Board, President and Chief Executive Officer of the Company, adopted a Rule 10b5-1 
trading arrangement providing for the sale, pursuant to the terms of the arrangement, of an aggregate of up to 1,000,000 shares of the Company’s common 
stock. Mr. Vinciarelli’s trading arrangement is intended to satisfy the affirmative defense in Rule 10b5-1(c). The duration of Mr. Vinciarelli’s trading 
arrangement is estimated to be from March 11, 2025 until December 31, 2025.  
On December 13, 2024, James F. Schmidt, Vice President, Chief Financial Officer of the Company and a member of the Company’s Board of 
Directors, adopted a Rule 10b5-1 trading arrangement providing for the sale, pursuant to the terms of the arrangement, of an aggregate of up to 22,146 
shares of the Company’s common stock. Mr. Schmidt’s trading arrangement is intended to satisfy the affirmative defense in Rule 10b5-1(c). The duration 
of Mr. Schmidt’s trading arrangement is estimated to be from March 14, 2025 until December 31, 2025. 
ITEM 9C. DISCLOSURE REGARDING FOREIGN JURISDICTIONS THAT PREVENT INSPECTIONS
Not applicable.

 
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PART III
ITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE
Incorporated by reference from the Company’s Definitive Proxy Statement for its 2025 annual meeting of stockholders.
ITEM 11. EXECUTIVE COMPENSATION
Incorporated by reference from the Company’s Definitive Proxy Statement for its 2025 annual meeting of stockholders.
ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS
Incorporated by reference from the Company’s Definitive Proxy Statement for its 2025 annual meeting of stockholders.
ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS AND DIRECTOR INDEPENDENCE
Incorporated by reference from the Company’s Definitive Proxy Statement for its 2025 annual meeting of stockholders.
ITEM 14. PRINCIPAL ACCOUNTANT FEES AND SERVICES
Incorporated by reference from the Company’s Definitive Proxy Statement for its 2025 annual meeting of stockholders.

 
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PART IV
ITEM 15. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES
(a) (1) Financial Statements
See index in Item 8.
(a) (2) Schedules
Schedule II Valuation and Qualifying Accounts
All other schedules for which provision is made in the applicable accounting regulation of the Securities and Exchange Commission are not required 
under the related instructions or are inapplicable, and therefore have been omitted.
(b) Exhibits
 
Exhibits
 
Description of Document
 
   
3.1
 Restated Certificate of Incorporation, dated February 28, 1990 (1)
3.2
 
Certificate of Ownership and Merger Merging Westcor Corporation, a Delaware Corporation, into Vicor Corporation, a Delaware 
Corporation, dated December 3, 1990 (1)
3.3
 Certificate of Amendment of Restated Certificate of Incorporation, dated May 10, 1991 (1)
3.4
 Certificate of Amendment of Restated Certificate of Incorporation, dated June 23, 1992 (1)
3.5
 Bylaws, as amended (8)
4.1
 Specimen Common Stock Certificate (2)
4.2
 Description of Securities Registered under Section 12 of the Exchange Act (16)
10.1*
 1998 Stock Option and Incentive Plan (3)
10.2*
 Vicor Corporation Amended and Restated 2000 Stock Option and Incentive Plan, as amended and restated (4)
10.3*
 
Form of Non-Qualified Stock Option under the Vicor Corporation Amended and Restated 2000 Stock Option and Incentive Plan 
(5)
10.4*
 Sales Incentive Plan (6)
10.5*
 Picor Corporation Amended and Restated 2001 Stock Option and Incentive Plan, dated May 30, 2018 (14)
10.6*
 Form of Non-Qualified Stock Option under the Picor Corporation 2001 Stock Option and Incentive Plan (7)
10.7*
 VI Chip Corporation Amended and Restated 2007 Stock Option and Incentive Plan (11)
10.8*
 
Form of Non-Qualified Stock Option Agreement under the VI Chip Corporation Amended 2007 Stock Option and Incentive Plan 
(9)
10.9*
 Form of Incentive Stock Option Agreement under the VI Chip Corporation Amended 2007 Stock Option and Incentive Plan (10)
10.10*
 Form of Stock Restriction Agreement under the VI Chip Corporation Amended 2007 Stock Option and Incentive Plan (10)
10.11*
 Vicor Corporation 2017 Employee Stock Purchase Plan (13)
10.12*
 VI Chip Corporation Amended and Restated 2007 Stock Option and Incentive Plan, as Amended and Restated (15)
10.13*
  Summary of Compensation Agreement between Vicor Corporation and Andrew D’Amico (20)
10.14*
 
Form of Stock Option Award Agreement under the Vicor Corporation Amended and Restated 2000 Stock Option and Incentive 
Plan, as amended and restated (17)
19
  Insider Trading and Disclosure Policy (20)
21.1
 Subsidiaries of the Company (20)
23.1
 Consent of KPMG LLP (20)
31.1
 Certification of Chief Executive Officer pursuant to Rule 13a-14(a) of the Exchange Act (20)
31.2
 Certification of Chief Financial Officer pursuant to Rule 13a-14(a) of the  Exchange Act (20)
32.1
 
Certification of Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-
Oxley Act of 2002 (20)
32.2
 
Certification of Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-
Oxley Act of 2002 (20)
97.1
  Vicor Corporation Recovery Policy (19)
101.INS**
 
Inline 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.

 
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101.SCH**
  Inline XBRL Taxonomy Extension Schema with Embedded Linkbase Documents.
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 (formatted as Inline XBRL and contained in Exhibit 101)
 
* Indicates a management contract or compensatory plan or arrangement required to be filled pursuant to Item 15(b) of Form 10-K.
** Filed with this Annual Report on Form 10-K for the year ended December 31, 2024 are the following documents formatted in iXBRL (Inline Extensible 
Business Reporting Language): (i) the Consolidated Balance Sheets for the years ended December 31, 2024 and 2023; (ii) the Consolidated Statements of 
Operations for the years ended December 31, 2024, 2023 and 2022; (iii) the Consolidated Statements of Comprehensive Income for the years ended 
December 31, 2024, 2023 and 2022; (iv) the Consolidated Statements of Cash Flows for the years ended December 31, 2024, 2023 and 2022; (v) the 
Consolidated Statements of Equity for the years ended December 31, 2024, 2023 and 2022; (vi) the Notes to Consolidated Financial Statements; and (vii) 
the information included in Part I, Item 1C and Part II, Item 9B(b).  
(1)
Filed as an exhibit to the Company’s Annual Report on Form 10-K filed on March 29, 2001 and incorporated herein by reference.
(2)
Filed as an exhibit to the Company’s Registration Statement on Form 10, as amended, under the Securities Exchange Act of 1934 (File No. 000-
18277), and incorporated herein by reference. (P)
(3)
Filed as an exhibit to the Company’s Registration Statement on Form S-8, as amended, under the Securities Act of 1933 (No. 333-61177), and 
incorporated herein by reference.
(4)
Filed as Appendix A to the Company’s Definitive Proxy Statement on Schedule 14A filed with the SEC on May 1, 2017 (File No. 000-18277), and 
incorporated herein by reference.
(5)
Filed as an exhibit to the Company’s Quarterly Report on Form 10-Q filed on November 4, 2004 (File No. 000-18277) and incorporated herein by 
reference.
(6)
Filed as an exhibit to the Company’s Annual Report on Form 10-K filed on March 16, 2005 (File No. 000-18277) and incorporated herein by 
reference.
(7)
Filed as an exhibit to the Company’s Annual Report on Form 10-K filed on March 14, 2006 (File No. 000-18277) and incorporated herein by 
reference.
(8)
Filed as an exhibit to the Company’s Current Report on Form 8-K filed on June 4, 2020 (File No. 000-18277) and incorporated herein by reference.
(9)
Filed as an exhibit to the Company’s Current Report on Form 8-K, dated June 6, 2007 (File No. 000-18277) and incorporated herein by reference.
(10) Filed as an exhibit to the Company’s Current Report on Form 8-K, dated March 6, 2008 (File No. 000-18277) and incorporated herein by reference.
(11) Filed as Appendix B to the Company’s Definitive Proxy Statement on Schedule 14A filed with the SEC on May 1, 2017 (File No. 000-18277), and 
incorporated herein by reference.
(12) Filed as Appendix C to the Company’s Definitive Proxy Statement on Schedule 14A filed with the SEC on May 1, 2017 (File No. 000-18277), and 
incorporated herein by reference.
(13) Filed as Appendix D to the Company’s Definitive Proxy Statement on Schedule 14A filed with the SEC on May 1, 2017 (File No. 000-18277), and 
incorporated herein by reference.
(14) Filed as Exhibit 10.1 to the Company’s Current Report on Form 8-K filed with the SEC on June 5, 2018 (File No. 000-18277), and incorporated 
herein by reference.
(15) Filed as Exhibit 10.1 to the Company’s Registration Statement on Form S-8, under the Securities Act of 1933 (No. 333-232864), and incorporated 
herein by reference. 
(16) Filed as an exhibit to the Company’s Annual Report on Form 10-K filed on March 1, 2021 (File No. 000-18277) and incorporated herein by reference.
(17) Filed as an exhibit to the Company’s Current Report on Form 8-K filed on May 13, 2021 (File No. 000-18277) and incorporated herein by reference.
(18) Filed as an exhibit to the Company’s Annual Report on Form 10-K filed on March 1, 2022 (File No. 000-18277) and incorporated herein by reference.
(19) Filed as an exhibit to the Company’s Annual Report on Form 10-K filed on February 28, 2024 (File No. 000-18277) and incorporated herein by 
reference.
(20) Filed herewith.

 
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ITEM 16. FORM 10-K SUMMARY
None.

 
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VICOR CORPORATION
SCHEDULE II
VALUATION AND QUALIFYING ACCOUNTS
Years ended December 31, 2024, 2023 and 2022
 
 
 
 
   
Charge
   
 
   
 
 
 
 
 
   
(Recovery)
   
 
   
 
 
 
 
Balance at
   
to Costs and
   
Other Charges,
   
Balance at
 
Description
 
Beginning of Period
   
Expenses
   
Deductions (1)
   
End of Period
 
Allowance for doubtful accounts:
 
 
   
 
   
 
   
 
 
Year ended:
 
 
   
 
   
 
   
 
 
December 31, 2024
  $
130,000    $
—    $
—    $
130,000 
December 31, 2023
   
87,000     
43,000     
—     
130,000 
December 31, 2022
   
82,000     
5,000     
—     
87,000 
 
(1)
Reflects uncollectible accounts written off, net of recoveries.

 
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SIGNATURES
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.
 
 
Vicor Corporation
 
 
 
 
 
 
By: /s/ James F. Schmidt
 
 
James F. Schmidt
 
 
Vice President, Chief Financial Officer
 
 
 
 
Date: March 3, 2025
 
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 in the capacities and on the dates indicated.
 
Signature
 
Title
 
Date
 
 
 
 
 
/s/ Patrizio Vinciarelli
 
President, Chief Executive Officer and
Chairman of the Board (Principal
Executive Officer)
 
March 3, 2025
Patrizio Vinciarelli
 
 
 
 
 
 
 
 
/s/ James F. Schmidt
 
Chief Financial Officer, Vice President and Director
(Principal Financial Officer and Principal 
Accounting Officer)
 
March 3, 2025
James F. Schmidt
 
 
 
 
 
 
 
 
/s/ Estia J. Eichten
 
Director
 
March 3, 2025
Estia J. Eichten
 
 
 
 
 
 
 
 
 
/s/ Michael S. McNamara
 
Director
 
March 3, 2025
Michael S. McNamara
 
 
 
 
 
 
 
 
 
/s/ Samuel J. Anderson
 
Director
 
March 3, 2025
Samuel J. Anderson
 
 
 
 
 
 
 
 
 
/s/ Claudio Tuozzolo
 
Director
 
March 3, 2025
Claudio Tuozzolo
 
 
 
 
 
 
 
 
 
/s/ Jason L. Carlson
 
Director
 
March 3, 2025
Jason L. Carlson
 
 
 
 
 
 
 
 
 
/s/ Philip D. Davies
 
Director
 
March 3, 2025
Philip D. Davies
 
 
 
 
 
/s/ Andrew T. D’Amico
 
Director
 
March 3, 2025 
Andrew T. D’Amico
 
 
 
 
 
/s/ Zmira Lavie
 
Director
 
March 3, 2025 
Zmira Lavie
 
 
 
 
 
 
 
 
 
/s/ John Shen
 
Director
 
March 3, 2025
John Shen
 
 
 
 
 

EXHIBIT 10.13
SUMMARY OF COMPENSATION AGREEMENT
BETWEEN VICOR CORPORATION AND ANDREW D’AMICO
The following is a description of the compensation agreement between Vicor Corporation (the “Company”) and Andrew D’Amico, provided pursuant to 
Item 601(b)(10)(iii)(A) of Regulation S-K promulgated by the Securities and Exchange Commission, which requires a written description of a 
compensatory agreement when no formal document exists.
Mr. D’Amico has served in the role of general counsel for the Company for intellectual property matters since January 2006. Pursuant to an informal 
compensation agreement between the Company and Mr. D’Amico (the “Agreement”), in exchange for his services as general counsel, the Company has 
agreed to pay Mr. D’Amico a fee of $34,590 per month (subject to annual adjustment), as well as reimbursement of expenses incurred in connection with 
his provision of services to the Company. Also pursuant to the Agreement, Mr. D’Amico is entitled to an incentive fee equal to 3% of the royalties received 
by the Company pursuant to certain license agreements negotiated by Mr. D’Amico on behalf of the Company. The aggregate amount of such incentive 
fees is limited to $1,000,000, although this amount may be increased by mutual agreement in certain circumstances, including the negotiation of additional 
license agreements by Mr. D’Amico. As of December 31, 2024, the amount of such incentive fees payable to Mr. D’Amico was $33,000. The Company 
expects to continue the Agreement, under the same terms and conditions, for 2025.
Mr. D’Amico also serves as a non-employee director of the Company and, as such, he is eligible to participate in, and receive cash and equity 
compensation in accordance with, the Company’s standard non-employee director compensation programs.

EXHIBIT 19
INSIDER TRADING AND DISCLOSURE POLICY 
Purpose  
To set forth the policy of Vicor Corporation and its business units, divisions, and subsidiaries (collectively, “Vicor” or “the Company”) regarding insider 
trading and the disclosure of information concerning the Company.  
Scope  
This Insider Trading and Disclosure Policy is applicable to all directors, officers, and employees of the Company.  Violation of this Insider Trading Policy 
by any director, officer, or employee of the Company may subject such person to disciplinary action by the Company, including termination of 
employment.  
List of Responsibilities  
This Insider Trading and Disclosure Policy is applicable to all directors, officers and employees of the Company.  In addition, this policy continues to 
apply to directors, officers, and employees of the Company following the termination of any such individual’s service to or employment with the Company 
until any material nonpublic information possessed by such individual has become public or is no longer material, whichever is earlier.  
Procedure  
What is “Insider Trading?”  
It is generally illegal for any director, officer, or employee of the Company to trade in the securities of the Company while in the possession of material, 
nonpublic information about the Company.  It is also generally illegal for any director, officer or employee of the Company to disclose material, nonpublic 
information about the Company to others who may trade on the basis of that information.  In addition, the U.S. Securities and Exchange Commission has 
asserted that it is illegal for a donor to gift securities if, when making the gift, the donor was aware of material nonpublic information and knew or was 
reckless in not knowing that the donee would sell the securities prior to the issuer’s disclosure of such information.  These illegal activities are commonly 
referred to as “insider trading.”  
The Company’s Board of Directors has adopted this Insider Trading and Disclosure Policy both to satisfy the Company’s obligation to reasonably 
supervise the activities of Company personnel and to help Company personnel avoid the severe consequences associated with violations of the 
insider trading laws.  
What is “Material” Information?  
Information about the Company is “material” if it could reasonably be expected to affect the investment or voting decisions of a stockholder or investor, or 
if the disclosure of the information could reasonably be expected to significantly alter the total mix of information in the marketplace about the Company.    
In simple terms, material information is any type of information that could reasonably be expected to affect the market price of the Company’s securities.  
Both positive and negative information may be material.  The Securities and Exchange Commission (the “SEC”) has stated that there is no fixed 
quantitative threshold amount for determining materiality, and that even very small quantitative changes can be qualitatively material if they would result in
a movement in the price of the Company’s securities.    
While it is not possible to identify all information that would be deemed “material,” the following items are types of information that should be considered 
carefully to determine whether they are material.  
•	
Projections of future earnings or losses, or other earnings guidance;  
•	
Earnings or revenue that are inconsistent with the consensus expectations of the investment community;  
•	
Potential restatements of the Company’s financial statements;  
•	
Pending or proposed mergers, acquisitions, tender offers, or joint ventures; 
•	
Pending or proposed acquisitions or dispositions of significant assets;  

•	
Changes in management or the Board of Directors;  
•	
Actual or threatened litigation, investigations, or major developments in such matters;  
•	
New products or discoveries, or developments regarding customers or suppliers (e.g., the acquisition or loss of a contract);  
•	
Changes in auditors or auditor notification that the Company may no longer rely on an auditor’s audit report;  
•	
Changes in dividend policy, declarations of stock splits, or public or private sales of additional securities;  
•	
Potential defaults under the Company’s credit agreements or indentures, or the existence of material liquidity deficiencies; or 
 •	
Bankruptcies or receiverships.  
What is “Nonpublic” Information?  
Material information is “nonpublic” if it has not been disseminated in a manner making it available to investors generally.    
To show that information is public, it is necessary to point to some fact that establishes that the information has become publicly available, such as the 
filing of a report with the SEC, the distribution of a press release through a widely disseminated news or wire service, or by other means that are reasonably 
designed to provide broad public access.  Before a person in possession of such information can trade, there also must be adequate time for the market as a 
whole to digest the information that has been disclosed.    
For the purposes of this Insider Trading and Disclosure Policy, information will be considered public after the close of trading on the second full trading 
day following the Company’s public release of the information.  
What Activities are Prohibited?  
When a director, officer, or employee knows he or she is in possession of material, nonpublic information about the Company, that person and his or her 
spouse, child, parent, sibling or other family member living in the same household, and any investment fund, trust, retirement plan, partnership, corporation 
or other entity over which one or more of these parties has the ability to influence or direct investment decisions concerning securities, generally are 
prohibited from the following activities:  
•	
Trading in the Company’s securities (including trading in options, puts, calls or other derivative securities of the Company);
•	
Having others trade for the employee in the Company’s securities;  
•	
Gifting the Company’s securities while knowing, or being reckless in not knowing, that the recipient would sell the securities prior to the Company’s 
disclosure of the material, nonpublic information about the Company;  
•	
Giving trading advice of any kind about the Company except that the employee should, when appropriate, advise others not to trade if doing so might 
violate the law or this Insider Trading Policy; and   
•	
Disclosing the material, nonpublic information about the Company to anyone else who might then trade (“tipping”).  
This Insider Trading and Disclosure Policy does not apply to an exercise of an employee stock option.  The policy does apply, however, to the use of 
outstanding Company securities to constitute part or all of the exercise price of an option, any sale of stock as part of a broker-assisted cashless 
exercise of an option, or any other market sale for the purpose of generating the cash needed to pay the exercise price of an option.  
These prohibitions continue whenever and for as long as the director, officer, or employee knows or is in possession of material, nonpublic information.  
Trading in the Company’s securities when in the possession of material, nonpublic information about the Company is expressly prohibited for all 
directors, officers, and employees of the Company.    
Remember, anyone scrutinizing transactions will be doing so after the fact, with the benefit of hindsight.  As a practical matter, before engaging in any 
transaction, a person should carefully consider how enforcement authorities and others might view the transaction in hindsight.   
What are the Penalties for Insider Trading?  
 

The penalties for insider trading violations can be severe.  Persons violating insider trading or tipping rules may be required to disgorge the profit gained or 
the loss avoided by the trading; pay the loss suffered by the persons who, contemporaneously with the purchase or sale of securities that are the subject of 
such violation, have purchased (where such violation is based on a sale of securities) or sold (where such violation is based on a purchase of securities) 
securities of the same class; pay civil penalties up to three times the profit made or loss avoided; pay a criminal penalty of up to $5 million, as an individual 
(up to $25 million for a business entity); and serve a jail term of up to 20 years.  The Company and/or the supervisors of the person violating the rules may 
also be required to pay major civil or criminal penalties and could under certain circumstances be subject to private lawsuits by contemporaneous traders 
for damages suffered as a result of illegal insider trading or tipping by persons under the Company’s control.  
Violation of this Insider Trading and Disclosure Policy or any federal or state insider trading laws may subject the person violating such policy or laws to 
disciplinary action by the Company, up to and including termination.  The Company reserves the right to determine, in its own discretion and on the basis 
of the information available to it, whether this Insider Trading and Disclosure Policy has been violated.  The Company may determine that specific 
conduct violates this Insider Trading Policy, whether or not the conduct also violates the law.  It is not necessary for the Company to await the filing or 
conclusion of a civil or criminal action against the alleged violator before taking disciplinary action.  
Unauthorized Disclosure; Prohibition on Commenting on the Company on Electronic Bulletin Boards, Internet Chat Rooms or Websites.  
While the Company encourages its stockholders and potential investors to obtain as much information as possible about the Company, the Company 
believes that information should come from its publicly-filed SEC reports, press releases, Vicor’s external website, or from a designated Company 
spokesperson, rather than from third-party speculation or unauthorized disclosures by directors, officers, or employees of the Company.    
For this reason, the Company has designated certain members of management to respond to inquiries regarding the Company’s business and prospects. 
Formal announcements are generally reviewed by management and legal counsel before they are made public.  Any communications that do not go through 
this review process create an increased risk to the Company, as well as to the individual responsible for the communication, of civil and criminal liability.  
In addition, with the advent of the Internet, and the emergence of electronic bulletin boards and chat rooms, electronic discussions about companies and 
their business prospects have become common.  Inappropriate communications disseminated on the Internet may pose an inherently greater risk due to the 
size of the audience they can reach.  These forums have the potential to move a stock price significantly, and very rapidly – yet the information 
disseminated through electronic bulletin boards and chat rooms often is unreliable, and in some cases, may be deliberately false.  The SEC has investigated 
and prosecuted a number of fraudulent schemes involving electronic bulletin boards and chat rooms.  A director, officer, or employee may encounter 
information about the Company on the Internet that he or she believes is harmful or inaccurate, or other information that he or she believes is true or 
beneficial for the Company.  
Although the director, officer, or employee may have a natural tendency to deny or confirm such information on an electronic bulletin board or in a chat 
room, any sort of response, even if it presents accurate information, could be considered improper disclosure and could result in legal liability to the person 
and/or to the Company.  
The Company is committed to preventing inadvertent disclosures of material, nonpublic information, preventing unwitting participation in Internet-based 
securities fraud, and avoiding the appearance of impropriety by persons associated with the Company.  Accordingly, this Insider Trading and Disclosure 
Policy prohibits an employee from discussing material, nonpublic information about the Company or its subsidiaries with anyone, including other 
employees, except as required in the performance of the employee’s duties.    
A director, officer, or employee should not provide, under any circumstances, information or discuss matters involving the Company with third 
parties, notably members of the news media, members of the investment community, or the Company stockholders, even if that director, officer, 
or employee is contacted directly by such third parties, without express prior authorization from the Company’s Chief Financial Officer.    
This restriction applies whether or not the employee identifies himself or herself as associated with the Company.  Employees should refer all such contact 
or inquiries to the Chief Financial Officer at 25 Frontage Road, Andover, MA  01810, telephone:  [***], e-mail: [***].  
This Insider Trading and Disclosure Policy also prohibits directors, officers, and employees from making any comments or postings about the Company on 
any Internet bulletin boards, chat rooms, or similar websites, or responding to comments or postings about the Company’s business made by others, 
regardless of the venue or forum.  This restriction applies whether or not the director, officer, or employee identifies himself or herself as associated with 
the Company.  

Confidential Information  
The Company also has strict policies relating to safeguarding the confidentiality of its internal, proprietary information.  These policies include procedures 
regarding identifying, marking, and safeguarding confidential information and employee confidentiality agreements.  Employees should comply with these 
policies at all times.  Please refer to the Company’s Code of Business Conduct and its Regulation FD Disclosure Policy, both archived on the Company’s 
Intranet, for additional information and discussion of confidential information.   
Reporting of Violations 
 If a director, officer, or employee violates this Insider Trading Policy or any federal or state laws governing insider trading, or know of any such violation 
by any director, officer, employee, or third party or parties, that person must report the violation immediately to the Corporate Governance Hotline.  The 
Corporate Governance Hotline Compliance may be contacted by telephone, or mail:  
−	
By leaving a message on the Corporate Governance Hotline at (833) 976-2060 
−	
In writing, addressed to: 	
Vicor Corporation 
P.O. Box 1929 Andover, MA 01810 
Attn: Audit Committee of the Board of Directors   
Modifications  
The Company may at any time change this Insider Trading Policy or adopt such other policies or procedures which it considers appropriate to carry out the 
purposes of the policy.  Notice of any such change will be delivered by the Company to directors, officers, and employees by regular or electronic mail (or 
other delivery option used by the Company).  Directors, officers, and employees will be deemed to have received, be bound by, and agree to revisions of 
this Insider Trading Policy when such revisions have been delivered to the recipient, unless that person object to any revision therein in a written statement 
received by the Company within two business days of such delivery and receipt.  
Questions  
Directors, officers, and employees are encouraged to ask questions and seek any follow-up information they may require with respect to the matters set 
forth in this Insider Trading Policy.    
A director’s, officer’s, or employees’ failure to observe this Insider Trading and Disclosure Policy could lead to significant legal problems and could have 
other serious consequences, including the termination of employment. 

EXHIBIT 21.1
 
SUBSIDIARIES OF THE COMPANY
 
Name
 
State or Jurisdiction 
of Incorporation
Vicor GmbH
 
Germany
VICR Securities Corporation
 
Massachusetts, USA
Vicor France SARL
 
France
Vicor Italy SRL
 
Italy
Vicor Hong Kong Ltd. 
 
Hong Kong
Vicor U.K. Ltd. 
 
United Kingdom
Vicor Japan Company, Ltd. 
 
Japan
Vicor KK
 
Japan 
Vicor Trading (Shanghai) Limited
 
China
Vicor Development Corporation
 
Delaware, USA
Freedom Power Systems, Inc. 
 
Delaware, USA
Northwest Power, Inc.
 
Delaware, USA
560 Oakmead LLC
 
California, USA
 

EXHIBIT 23.1
Consent of Independent Registered Public Accounting Firm
We consent to the incorporation by reference in the registration statements (No. 333-240335, 333-232864, 333-225500, 333-219760, 333-99423, 333-
44790) on Form S-8 of our reports dated March 3, 2025, with respect to the consolidated financial statements of Vicor Corporation and the effectiveness of 
internal control over financial reporting.
/s/ KPMG LLP 
Boston, Massachusetts
March 3, 2025

Exhibit 31.1
 
CHIEF EXECUTIVE OFFICER CERTIFICATION
I, Patrizio Vinciarelli, certify that: 
1.
I have reviewed this Annual Report on Form 10-K of Vicor Corporation;
2.
Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make 
the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered 
by this report;
3.
Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material 
respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;
4.
The registrant’s other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined 
in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) 
and 15d-15(f)) for the registrant and have:
a)
Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our 
supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us 
by others within those entities, particularly during the period in which this report is being prepared;
b)
Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under 
our supervision, 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 in the United States;
c)
Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about 
the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; 
and
d)
Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s 
most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is 
reasonably likely to materially affect, the registrant’s internal control over financial reporting; and
5.
The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, 
to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):
a)
All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are 
reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and
b)
Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s 
internal control over financial reporting.
 
Dated: March 3, 2025
 
 
/s/ Patrizio Vinciarelli
 
Patrizio Vinciarelli 
President, Chairman of the Board and 
Chief Executive Officer
 

Exhibit 31.2
 
CHIEF FINANCIAL OFFICER CERTIFICATION
I, James F. Schmidt, certify that: 
1.
I have reviewed this Annual Report on Form 10-K of Vicor Corporation;
2.
Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make 
the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered 
by this report;
3.
Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material 
respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;
4.
The registrant’s other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined 
in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) 
and 15d-15(f)) for the registrant and have:
a)
Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our 
supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us 
by others within those entities, particularly during the period in which this report is being prepared;
b)
Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under 
our supervision, 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 in the United States;
c)
Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about 
the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; 
and
d)
Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s 
most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is 
reasonably likely to materially affect, the registrant’s internal control over financial reporting; and
5.
The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, 
to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):
a)
All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are 
reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and
b)
Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s 
internal control over financial reporting.
 
Dated: March 3, 2025
 
 
/s/ James F. Schmidt
 
James F. Schmidt
 
Vice President, Chief Financial Officer
 

Exhibit 32.1
 
CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
In connection with the Annual Report of Vicor Corporation (the “Company”) on Form 10-K for the period ended December 31, 2024 as filed with 
the Securities and Exchange Commission on the date hereof (the “Report”), I, Patrizio Vinciarelli, Chief Executive Officer of the Company, certify, 
pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:
(1)
The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and
(2)
The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the 
Company.
 
/s/ Patrizio Vinciarelli 
Patrizio Vinciarelli 
President, Chairman of the Board and 
Chief Executive Officer
March 3, 2025
A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and 
furnished to the Securities and Exchange Commission or its staff upon request.

Exhibit 32.2
CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
In connection with the Annual Report of Vicor Corporation (the “Company”) on Form 10-K for the period ended December 31, 2024 as filed with 
the Securities and Exchange Commission on the date hereof (the “Report”), I, James F. Schmidt, Chief Financial Officer of the Company, certify, pursuant 
to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:
(1)
The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and
(2)
The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the 
Company.
 
/s/ James F. Schmidt
James F. Schmidt
Vice President, Chief Financial Officer
March 3, 2025
A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and 
furnished to the Securities and Exchange Commission or its staff upon request.