Filed pursuant to Rules 424(b)(3) and 424(c) Registration Statement No. 333-82080 PROSPECTUS SUPPLEMENT NO. 18 (To Prospectus Dated February 22, 2002) $200,000,000 Photronics, Inc. 4 3/4% Convertible Subordinated Notes Due 2006 and Common Stock Issuable Upon Conversion of the Notes This document supplements our prospectus dated February 22, 2002 relating to the resale of up to $200,000,000 aggregate principal amount of our notes and the shares of our common stock issuable upon conversion of the notes, by certain holders of notes who are named as selling security holders in the prospectus. You should read this prospectus supplement in conjunction with the prospectus. This prospectus supplement updates information in the prospectus, and, accordingly, to the extent inconsistent, the information in this prospectus supplement supersedes the information contained in the prospectus. ----------------------- Investing in the notes involves risks. See "Risk Factors" beginning on page 7 of the prospectus. ----------------------- NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES COMMISSION HAS APPROVED OR DISAPPROVED OF THESE SECURITIES OR PASSED UPON THE ADEQUACY OR ACCURACY OF THIS PROSPECTUS SUPPLEMENT. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE. The date of this prospectus supplement is April 8, 2003. The table of selling security holders beginning on page 36 of the prospectus is hereby amended to add the entity named below as selling security holder: Number of shares of Principal amount of common Percentage notes beneficially stock that of common stock owned that Percentage may be sold outstanding Name may be sold of notes outstanding (1) (2) ---- ------------------- -------------------- ------------------ --------------- Conseco Fund Group-Convertible $ 250,000 * 6,756 * Securities Fund 2 After giving effect to the addition of the foregoing selling security holder and the deletion of three selling security holders who have sold all of their notes pursuant to the prospectus, the section of the prospectus entitled "Selling Security Holders" reads as follows: SELLING SECURITY HOLDERS We originally issued the notes in a private placement in December 2001. The notes were resold by the initial purchasers of the notes to qualified institutional buyers under Rule 144A under the Securities Act. Selling security holders may offer and sell the notes and the underlying common stock pursuant to this prospectus. The following table sets forth information we have received as of April 8, 2003 about the principal amount of notes and the underlying common stock beneficially owned by each selling security holder that may be offered using this prospectus. Principal amount of notes beneficially Percentage of Number of shares Percentage of owned that notes of common stock common stock Name may be sold outstanding that may be sold (1) outstanding (2) ---- ------------------- ------------- -------------------- --------------- Advent Convertible Master Cayman L.P. $ 2,935,000 1.47% 79,324 * AIG/National Union Fire Insurance 180,000 * 4,864 * AIM Alternative Asset Partners 15,000 * 405 * Allentown City Firefighters Pension Plan 29,000 * 783 * Allentown City Officers & Employees Pension Fund 11,000 * 297 * Allentown City Police Pension Plan 54,000 * 1,459 * Alpha US Sub Fund 4, LLC 415,000 * 11,216 * Amaranth LLC 13,800,000 6.90 372,972 1.21% American Motorist Insurance Company 507,000 * 13,702 * 3 Principal amount of notes beneficially Percentage of Number of shares Percentage of owned that notes of common stock common stock Name may be sold outstanding that may be sold (1) outstanding (2) ---- ------------------- ------------- -------------------- --------------- AmSouth Bank Custodian for AmSouth VA 2,100,000 1.05 56,756 * Equity Income Fund AmSouth Bank Custodian for Silect Equity 1,320,000 * 35,675 * Variable Annuity Fund Arapahoe County Colorado 49,000 * 1,324 * Arbitex Master Fund L.P. (9) 9,000,000 4.50 243,243 * Argent Classic Convertible Arbitrage Fund L.P. 500,000 * 13,513 * Argent Classic Convertible Arbitrage Fund 2,000,000 1.00 54,054 * (Bermuda) Ltd. Argent Convertible Arbitrage Fund Ltd. 4,500,000 2.25 121,621 * Argent LowLev Convertible Arbitrage Fund LLC 500,000 * 13,513 * Arkansas Teachers Retirement System 3,506,000 1.75 94,756 * Aventis Pension Master Trust (5) 105,000 * 2,837 * Bank Austria Cayman Islands, LTD 7,400,000 3.70 199,999 * Baptist Health of South Florida 577,000 * 15,594 * Black Diamond Offshore Ltd. 565,000 * 15,270 * Boilermaker - Blacksmith Pension Trust (5) 590,000 * 15,945 * British Virgin Islands Social Security Board 38,000 * 1,027 * 4 Principal amount of notes beneficially Percentage of Number of shares Percentage of owned that notes of common stock common stock Name may be sold outstanding that may be sold (1) outstanding (2) ---- ------------------- ------------- -------------------- --------------- CALAMOS(R)Convertible Fund - CALAMOS(R) 2,400,000 1.20 64,864 * Investment Trust (5) CALAMOS(R)Convertible Growth and Income Fund 4,400,000 2.20 118,918 * - CALAMOS(R)Investment Trust (5) CALAMOS(R)Convertible Portfolio - CALAMOS(R) 65,000 * 1,756 * Advisors Trust (5) CALAMOS(R)Convertible Technology Fund - 65,000 * 1,756 * CALAMOS(R)Investment Trust (5) CALAMOS(R)Global Convertible Fund - CALAMOS(R) 70,000 * 1,891 * Investment Trust (5) CALAMOS(R)Market Neutral Fund - CALAMOS(R) 10,500,000 5.25 283,783 * Investment Trust (5) Castle Convertible Fund, Inc. 1,250,000 * 33,783 * CEMEX Pension Plan (5) 60,000 * 1,621 * Chrysler Corporation Master Retirement Trust 2,035,000 1.01 54,999 * CIBC World Markets 1,000,000 * 27,027 * City of Albany Pension Plan (5) 50,000 * 1,351 * City of Knoxville Pension System (5) 145,000 * 3,918 * City of New Orleans 203,000 * 5,486 * City University of New York 122,000 * 3,297 * Clarica Life Insurance Co.- U.S. (5) 145,000 * 3,918 * Clinton Multistrategy Master Fund, Ltd. 4,000,000 2.00 108,108 * Clinton Riverside Convertible Portfolio 4,000,000 2.00 108,108 * Limited 5 Principal amount of notes beneficially Percentage of Number of shares Percentage of owned that notes of common stock common stock Name may be sold outstanding that may be sold (1) outstanding (2) ---- ------------------- ------------- -------------------- --------------- Conseco Fund Group-Convertible Securities Fund 250,000 * 6,756 * Consulting Group Capital Markets Funds (5) 250,000 * 6,756 * Credit Suisse First Boston Corporation 1,500,000 * 40,540 * DeAm Convertible Arbitrage 3,300,000 1.65 89,189 * Delta Airlines Master Trust (5) 950,000 * 25,675 * Delta Air Lines Master Trust (c/o Oaktree 490,000 * 13,243 * Capital Management LLC) Delta Pilots Disability and Survivorship Trust (5) 200,000 * 5,405 * Delta Pilots D & S Trust (c/o Oaktree 270,000 * 7,297 * Capital Management LLC) Deutsche Banc Alex Brown 15,624,000 7.81 422,269 1.37 Dorinco Reinsurance Company (5) 325,000 * 8,783 * Double Black Diamond Offshore LDC 2,935,000 1.47 79,324 * Drury University (5) 35,000 * 945 * Engineers Joint Pension Fund 468,000 * 12,648 * Federated Equity Income Fund, Inc. 7,300,000 3.65 197,297 * Federated Insurance Series, on behalf of 300,000 * 8,108 * its Federated Income Fund II Fidelity Financial Trust: Fidelity 11,680,000 5.84 315,675 1.03 Convertible Securities Fund (6) 6 Principal amount of notes beneficially Percentage of Number of shares Percentage of owned that notes of common stock common stock Name may be sold outstanding that may be sold (1) outstanding (2) ---- ------------------- ------------- -------------------- --------------- Gartmore Variable Insurance Trust, on behalf of its Federated GVIT Equity Income Fund 180,000 * 4,864 * Goldman Sachs and Company 3,430,000 1.71 92,702 * Grady Hospital Foundation 107,000 * 2,891 * Granville Capital Corporation 2,000,000 1.00 54,054 * HFR Convertible Arbitrage Account 190,000 * 5,135 * HFR Master Fund, LTD. (5) 50,000 * 1,351 * H.K. Porter Company, Inc. (5) 15,000 * 405 * HSBC Trustee, Zola Managed Trust 200,000 * 5,405 * Independence Blue Cross 64,000 * 1,729 * Innovest Finanzdienstleistungs AG 580,000 * 15,594 * Jefferies Umbrella Fund US Convertible Bonds 270,000 * 7,297 * KBC Financial Products (Cayman Island) 2,000,000 1.00 54,054 * Limited KBC Financial Products USA Inc. 250,000 * 6,756 * Kettering Medical Center Funded 35,000 * 945 * Depreciation Account (5) Knoxville Utilities Board Retirement System 120,000 * 3,243 * (5) Lincoln National Global Asset Allocation 40,000 * 1,081 * Fund, Inc. Lipper Convertibles, L.P. 1,500,000 * 40,540 * Lipper Offshore Convertibles, L.P. 1,500,000 * 40,540 * Louisiana Workers' Compensation Corporation 150,000 * 4,054 * (5) Lumbermans 491,000 * 13,270 * Lyxor Master Fund Ref: Argent/LowLev CB 1,230,000 * 33,243 * 7 Principal amount of notes beneficially Percentage of Number of shares Percentage of owned that notes of common stock common stock Name may be sold outstanding that may be sold (1) outstanding (2) ---- ------------------- ------------- -------------------- --------------- Lyxor Master Fund, c/o Zola Capital Management 300,000 * 8,108 * Macomb County Employees' Retirement System (5) 145,000 * 3,918 * Man Convertible Bond Master Fund, Ltd. 8,208,000 4.10 221,837 * McMahan Securities Co., L.P. 1,500,000 * 40,540 * MFS Total Return Fund (10) 1,000,000 * 27,027 * Microsoft Corporation 410,000 * 11,081 * Minnesota Power and Light 125,000 * 3,378 * Morgan Stanley & Co. (7) 1,500,000 * 40,540 * Motion Pictures Industry 545,000 * 14,729 * Motion Picture Industry Health Plan - 190,000 * 5,135 * Active Member Fund Motion Picture Industry Health Plan - 80,000 * 2,162 * Retiree Member Fund Municipal Employees 183,000 * 4,945 * New Orleans Firefighters Pension / Relief Fund 110,000 * 2,972 * Nicholas Applegate Convertible Fund 1,529,000 * 41,324 * Nicholas Applegate Global Holdings LP 35,000 * 945 * 1976 Distribution Trust FBO A.R. Lauder / Zinterhofer 7,000 * 189 * 1976 Distribution Trust FBO Jane A. Lauder 13,000 * 351 * Occidental Petroleum Corporation 118,000 * 3,189 * OCM Convertible Trust 1,180,000 * 8,918 * Ohio National Fund, Inc., on behalf of its 30,000 * 810 * Equity Income Portfolio 8 Principal amount of notes beneficially Percentage of Number of shares Percentage of owned that notes of common stock common stock Name may be sold outstanding that may be sold (1) outstanding (2) ---- ------------------- ------------- -------------------- --------------- Ondeo Nalco 40,000 * 1,081 * Onex Industrial Partners Limited 1,950,000 * 52,702 * Palladin Securities LLC 1,200,000 * 32,432 * Paloma Securities LLC 5,000,000 2.50 135,135 * Partner Reinsurance Company Ltd. 330,000 * 8,918 * Pebble Capital Inc. 650,000 * 17,567 * Physicians Life 183,000 * 4,945 * Policemen and Firemen Retirement System of 503,000 * 13,594 * the City of Detroit Port Authority of Allegheny County Retirement and Disability Allowance Plan for the Employees Represented by Local 85 615,000 * 16,621 * of the Amalgamated Transit Union (5) Pro-mutual 603,000 * 16,297 * Putnam Asset Allocation Funds-Balanced Portfolio 310,000 * 8,378 * Putnam Asset Allocation Funds-Conservative Portfolio 240,000 * 6,486 * Putnam Convertible Income-Growth Trust 2,180,000 1.09 58,918 * Putnam Convertible Opportunities and Income Trust 80,000 * 2,162 * Putnam Variable Trust-Putnam VT Global 80,000 * 2,162 * Asset Allocation Fund Qwest Occupational Health Trust 55,000 * 1,486 * Ramius Capital Group 300,000 * 8,108 * RAM Trading Ltd 1,750,000 * 47,297 * Raytheon Master Pension Trust 200,000 * 5,405 * RCG Halifax Master Fund, LTD 550,000 * 14,864 * 9 Principal amount of notes beneficially Percentage of Number of shares Percentage of owned that notes of common stock common stock Name may be sold outstanding that may be sold (1) outstanding (2) ---- ------------------- ------------- -------------------- --------------- RCG Latitude Master Fund, LTD 2,500,000 1.25 67,567 * RCG Multi Strategy A/C LP 1,250,000 * 33,783 * Robertson Stephens 5,000,000 2.50 135,135 * Rockhaven Fund 80,000 * 2,162 * Rockhaven Premier Dividend Fund 700,000 * 18,918 * Sage Capital 100,000 * 2,702 * San Diego City Retirement 1,097,000 * 29,648 * San Diego County Convertible 1,654,000 * 44,702 * SCI Endowment Care Common Trust Fund - First Union (5) 20,000 * 540 * SCI Endowment Care Common Trust Fund - 70,000 * 1,891 * National Fiduciary Services (5) SCI Endowment Care Common Trust Fund - Suntrust (5) 30,000 * 810 * Screen Actors Guild Pension Convertible 500,000 * 13,513 * S G Cowen Securities Corporation 1,500,000 * 40,540 * SG Hambros Trust Company (Jersey) Ltd as 300,000 * 8,108 * Trustee of the Lyxor Master Fund Shell Pension Trust 320,000 * 8,648 * Silverado Arbitrage Trading, Ltd. 500,000 * 13,513 * Silvercreek Limited Partnership 1,100,000 * 29,729 * Silvercreek II Limited 900,000 * 24,324 * Sisters of Good Shepherd 100,000 * 2,702 * Southern Farm Bureau Life Insurance 185,000 * 4,999 * SPT (5) 710,000 * 19,189 * St. Thomas Trading, Ltd. 13,468,000 6.73 363,999 1.18 Starvest Combined Portfolio 190,000 * 5,135 * 10 Principal amount of notes beneficially Percentage of Number of shares Percentage of owned that notes of common stock common stock Name may be sold outstanding that may be sold (1) outstanding (2) ---- ------------------- ------------- -------------------- --------------- State Employees' Retirement Fund of the 810,000 * 21,891 * State of Delaware State of Connecticut Combined Investment Fund 1,705,000 * 46,081 * State of Maryland Retirement Agency 2,575,000 1.29 69,594 * Sunrise Partners LLC 9,200,000 4.60 248,648 * The Dow Chemical Company Employees' Retirement Plan (5) 1,150,000 * 27,631 The Fondren Foundation (5) 35,000 * 945 * The Grable Foundation 95,000 * 2,567 * Trustmark Insurance Company 280,000 * 7,567 * 2000 Revocable Trust FBO A.R. Lauder / Zinterhofer 6,000 * 162 * Union Carbide Retirement Account (5) 600,000 * 16,216 * United Food and Commercial Workers Local 270,000 * 7,297 * 1262 and Employee Pension Fund (5) Univar USA Inc. Retirement Plan (5) 140,000 * 3,783 * Vanguard Convertible Securities Fund, Inc. 1,945,000 * 52,567 * Wake Forest University 686,000 * 18,540 * Wake Forest University Convertible Arbitrage 355,000 * 9,594 * WPG Convertible Arbitrage Overseas Master Fund, L.P 2,500,000 1.25 67,567 * Writers Guild Industry Health Fund 293,000 * 7,918 * Wyoming State Treasurer 971,000 * 26,243 * 11 Principal amount of notes beneficially Percentage of Number of shares Percentage of owned that notes of common stock common stock Name may be sold outstanding that may be sold (1) outstanding (2) ---- ------------------- ------------- -------------------- --------------- Zurich Institutional Benchmark Master Fund Ltd. 1,000,000 * 27,027 * Any other holder of notes or future transferee, pledgee, donee or successor of 0 - 0 - any holder (3) ------------------- ------------- -------------------- --------------- Total............................................... $200,000,000 (8) 100.00% 5,405,400 (4) 15.13% ---------- * Less than 1%. (1) Assumes conversion of all of the holder's notes at a conversion rate of 27.027 shares of common stock per $1,000 principal amount of notes. However, this conversion rate will be subject to adjustment as described under "Description of Notes--Conversion Rights." As a result, the amount of common stock issuable upon conversion of the notes may increase or decrease in the future. (2) Calculated based on 30,315,494 shares of common stock outstanding as of December 31, 2001. In calculating this amount for each selling security holder, we treated as outstanding that number of shares of common stock issuable upon conversion of all of that holder's notes. However, we did not assume the conversion of any other holder's notes, except in calculating the percentage for all selling security holders as a group. (3) Information about other selling security holders will be set forth in prospectus supplements, if required. (4) Column does not add up correctly because the fractional shares to which the holders would be entitled have been disregarded. (5) Pursuant to an Investment Management Agreement, CALAMOS(R) Investments is not acting individually, but solely as an Investment Manager for the selling security holder. (6) The entity is either an investment company or a portfolio of an investment company registered under Section 8 of the Investment Company Act of 1940, as amended, or a private investment account advised by Fidelity Management and Research Company ("FMR Co."). FMR Co. is a Massachusetts corporation and an investment advisor registered under Section 203 of the Investment Advisers Act of 1940, as amended, and provides investment advisory services to each of 12 such Fidelity entities identified above, and to other registered investment companies and to certain other funds which are generally offered to a limited group of investors. FMR Co. is a wholly owned subsidiary of FMR Corp., a Massachusetts corporation. The holdings are as of January 23, 2002. (7) The entity owns $1,200,000 of our 6.00% convertible subordinated notes due 2004. Further, Morgan Stanley & Co. Incorporated acted as one of the initial purchasers in connection with the offer and sale of the notes in December 2001. (8) The figures in this column are based on information supplied to us, as of April 8, 2003, by the respective selling security holders named in the table. As of that date, these selling security holders had supplied us with information indicating that, collectively, they owned more than $200,000,000 aggregate principal amount of notes (which would be convertible into more than 5,405,400 shares of common stock), reflecting, we believe, that one or more selling security holders supplied us with information for inclusion in the table and then sold their notes in transactions exempt from the registration requirements of the Securities Act to persons who also supplied us with information with respect to the same notes. However, since this prospectus would not be applicable to any sale of notes after they have been publicly sold utilizing this prospectus, no more than $200,000,000 principal amount of notes could be sold utilizing this prospectus and, accordingly, the $200,000,000 total in this column has been retained and represents the maximum principal amount of notes that could be sold hereunder. (9) The entity also owns an additional $6,500,000 principal amount of the notes, which it purchased, in registered form, in the open market. (10) This entity (the "Fund") has advised us that, to the best of its knowledge, the Fund has no position, office or other material relationship with us or any of our affiliates and that, while other funds and accounts advised by Massachusetts Financial Services Company ("MFS") may own securities issued by us, MFS has no knowledge of any other position, office or other material relationship between the Fund's affiliates and us or any of our affiliates. We prepared this table based on the information supplied to us on or before April 8, 2003 by the selling security holders named in the table. The selling security holders listed in the above table may have sold or transferred, pursuant to the prospectus or in transactions exempt from the registration requirements of the Securities Act, some or all of their notes since the date they have supplied the information to us. Some of the selling security holders may hold additional notes that have been registered under the Securities Act. Information about the selling security holders may change further over time. Any changed information supplied to us will be set forth in future prospectus supplements. Other than as noted above, none of the selling security holders listed above has, or within the past three years has had, any position, office or other material relationship with us or any of our predecessors or affiliates. 13 Because the selling security holders may offer all or some of their notes or the underlying common stock from time to time, we cannot estimate the amount of the notes or the underlying common stock that will be held by the selling security holders upon the termination of any particular offering. See "Plan of Distribution." 14 The last sentence of the sixth paragraph under "Plan of Distribution" on page 41 of the prospectus was previously amended to read as follows: "The selling security holders may also sell the notes or the underlying common stock short and deliver notes or the underlying common stock to close out short positions, or loan or pledge notes or the underlying common stock to broker-dealers or financial institutions that, in turn, may sell the notes or the underlying common stock." 15