<PAGE>
PROSPECTUS SUPPLEMENT FILED PURSUANT TO RULE 424(b)(4)
TO PROSPECTUS DATED MAY 22, 2000 REGISTRATION NO. 333-36112
$345,000,000
TRIQUINT SEMICONDUCTOR, INC.
4% CONVERTIBLE SUBORDINATED NOTES DUE 2007
AND SHARES OF COMMON STOCK
This prospectus supplement relates to the resale by the selling
securityholders of 4% convertible subordinated notes due 2007 of TriQuint
Semiconductor, Inc. and the shares of common stock, par value of $0.001 per
share, of TriQuint Semiconductor, Inc. issuable upon the conversion of the
notes.
This prospectus supplement should be read in conjunction with the
prospectus dated May 22, 2000, which is to be delivered with this prospectus
supplement. All capitalized terms used but not defined in the prospectus
supplement shall have the meanings given them in the prospectus.
The table below sets forth information as of the date hereof concerning
beneficial ownership of the notes of the selling securityholders as listed
below. All information concerning beneficial ownership has been furnished by the
selling securityholders.
<TABLE>
<CAPTION>
PRINCIPAL AMOUNT
OF NOTES NUMBER OF SHARES
BENEFICIALLY PERCENTAGE OF OF COMMON STOCK PERCENTAGE OF
OWNED THAT MAY NOTES THAT MAY BE COMMON STOCK
NAME BE SOLD OUTSTANDING SOLD(1) OUTSTANDING(2)
--------------------------------------------------- ------------------ -------------- ----------------- --------------
<S> <C> <C> <C> <C>
Tribeca Investments LLC............................ $32,595,000 9.4% 240,376 *
399 Park Avenue, 7th Floor
New York, NY 10043
KBC Financial Products(3).......................... 6,000,000 1.7 44,248 *
120 West 45th Street, 25th Floor
New York, NY 10036
Granville Capital Corporation...................... 5,500,000 1.6 40,560 *
c/o Curacao Corporation Company N.V.
Kaya Plamboyan 9
Willemstad, Curacao
Netherlands Antilles
Bankers Trust Company, Trustee for Daimler Chrysler
Corporation EMP #1 Pension Plan DTD 4/1/89...... 3,898,000 1.1 28,746 *
c/o Palisade Capital Management, L.L.C.
1 Bridge Plaza, Suite 695
Fort Lee, NJ 07024
Lehman Brothers Inc................................ 3,850,000 1.1 28,392 *
200 Vesey Street, 6th Floor
New York, NY 10285
CIBC World Markets Corp.(4)......................... 3,700,000 1.1 27,286 *
One World Financial Center
200 Liberty Street
New York, NY 10281
BP Amoco Plc. Master Trust......................... 3,440,000 1.0 25,369 *
c/o SSI Investment Management Inc.
357 North Canon Drive
Beverly Hills, CA 90210
EQAT Alliance Growth & Income Account.............. 2,700,000 * 19,912 *
c/o Alliance Capital Management
1345 Avenue of the Americas, 40th Floor
New York, NY 10105
Credit Suisse First Boston Corporation............. 2,500,000 * 18,437 *
5 World Trade Center
New York, NY 10048
Attn: Reorg. Department
</TABLE>
<PAGE>
<TABLE>
<CAPTION>
PRINCIPAL AMOUNT
OF NOTES NUMBER OF SHARES
BENEFICIALLY PERCENTAGE OF OF COMMON STOCK PERCENTAGE OF
OWNED THAT MAY NOTES THAT MAY BE COMMON STOCK
NAME BE SOLD OUTSTANDING SOLD(1) OUTSTANDING(2)
--------------------------------------------------- ------------------ -------------- ----------------- --------------
<S> <C> <C> <C> <C>
State Street Bank, Custodian for GE Pension Trust.. $1,925,000 * 14,196 *
c/o Palisade Capital Management, L.L.C.
1 Bridge Plaza, Suite 695
Fort Lee, NJ 07024
Equitable Life Assurance Separate Account
- Convertibles.................................. 1,630,000 * 12,021 *
c/o Alliance Capital Management
1345 Avenue of the Americas, 40th Floor
New York, NY 10105
Nomura Securities International Inc................ 1,500,000 * 11,062 *
2 World Financial Center, Bldg. B
New York, NY 10281
Deephaven Domestic Convertible Trading Ltd......... 1,500,000 * 11,062 *
130 Cheshire Lane, Suite 102
Minnetonka, MN 55305
EQAT Alliance Growth Investors..................... 1,470,000 * 10,841 *
c/o Alliance Capital Management
1345 Avenue of the Americas, 40th Floor
New York, NY 10105
SG Cowen Securities Corp.(4)(5)..................... 1,275,000 * 9,403 *
Financial Square, 25th Floor
New York, NY 10017
The Estate of James Campbell....................... 1,084,000 * 7,994 *
c/o SSI Investment Management Inc.
357 North Canon Drive
Beverly Hills, CA 90210
Jefferies & Co.(3)................................. 1,000,000 * 7,375 *
Harborside Financial Center
Suite 705, Plaza III
Jersey City, NJ 07303
The Class 1 C Company Ltd.......................... 1,000,000 * 7,375 *
c/o PRS International (Cayman) Ltd.
701 Brickell Avenue, Suite 850
Miami, FL 33131
Memphis Light, Gas & Water Retirement Fund......... 890,000 * 6,563 *
c/o Alliance Capital Management
1345 Avenue of the Americas, 40th Floor
New York, NY 10105
Penn Treaty Network America Insurance Company...... 320,000 * 2,360 *
c/o Palisade Capital Management, L.L.C.
1 Bridge Plaza, Suite 695
Fort Lee, NJ 07024
Franklin and Marshall College...................... 267,000 * 1,969 *
c/o Palisade Capital Management, L.L.C.
1 Bridge Plaza, Suite 695
Fort Lee, NJ 07024
The Frist Foundation............................... 260,000 * 1,917 *
c/o Alliance Capital Management
1345 Avenue of the Americas, 40th Floor
New York, NY 10105
ITU, Inc........................................... 226,000 * 1,667 *
c/o SSI Investment Management Inc.
357 North Canon Drive
Beverly Hills, CA 90210
Equitable Life Assurance Separate Account
- Balanced...................................... 140,000 * 1,032 *
c/o Alliance Capital Management
1345 Avenue of the Americas, 40th Floor
New York, NY 10105
</TABLE>
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<PAGE>
<TABLE>
<CAPTION>
PRINCIPAL AMOUNT
OF NOTES NUMBER OF SHARES
BENEFICIALLY PERCENTAGE OF OF COMMON STOCK PERCENTAGE OF
OWNED THAT MAY BE NOTES THAT MAY BE COMMON STOCK
NAME SOLD OUTSTANDING SOLD(1) OUTSTANDING(2)
--------------------------------------------------- ------------------ -------------- ----------------- --------------
<S> <C> <C> <C> <C>
David Lipscomb University General Endowment........ $70,000 * 516 *
c/o Alliance Capital Management
1345 Avenue of the Americas, 40th Floor
New York, NY 10105
</TABLE>
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* Less than 1%
(1) Assumes conversion of the full amount of notes held by such holder at the
initial conversion price of $135.60 per share; such conversion price is
subject to adjustment as described under "Description of Notes--Conversion
of Notes." Accordingly, the number of shares of common stock issuable upon
conversion of the Notes may increase or decrease from time to time. Under
the terms of the Indenture, fractional shares will not be issued upon
conversion of the notes; cash will be paid in lieu of fractional shares, if
any.
(2) Computed in accordance with Rule 13d-3(d)(i) promulgated under the Exchange
Act and based upon 38,387,139 shares of common stock outstanding as of
April 3, 2000, treating as outstanding the number of shares of common stock
shown as being issuable upon the assumed conversion by the named holder of
the full amount of such holder's notes but not assuming the conversion of
the notes of any other holder.
(3) This supplement amends the prior information contained in the prospectus
supplement dated June 8, 2000 concerning beneficial ownership of the
selling securityholder.
(4) Each of SG Cowen Securities Corp. and CIBC World Markets Corp. has acted
as underwriter for an issuance of our securities within the past three
years.
(5) The amounts presented herein are in addition to those reported by the
selling securityholder in the prospectus dated May 22, 2000.
-------------------------
INVESTING IN THE SECURITIES OFFERED HEREBY INVOLVES A HIGH DEGREE OF
RISK. SEE "RISK FACTORS" BEGINNING ON PAGE 8 OF THE PROSPECTUS.
THE SECURITIES AND EXCHANGE COMMISSION AND STATE SECURITIES
REGULATORS HAVE NOT APPROVED OR DISAPPROVED OF THESE
SECURITIES OR DETERMINED IF THIS PROSPECTUS IS TRUTHFUL
OR COMPLETE. ANY REPRESENTATION TO THE
CONTRARY IS A CRIMINAL OFFENSE.
-------------------------
The date of this Prospectus Supplement is June 16, 2000.
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