<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 BE NOTES THAT MAY BE COMMON STOCK
NAME SOLD OUTSTANDING SOLD(1) OUTSTANDING(2)
--------------------------------------------------- ----------------- ------------- ---------------- --------------
<S> <C> <C> <C> <C>
New York Life Insurance Company.................... $7,650,000 2.2% 56,416 *
51 Madison Avenue, Room 203
New York, NY 10010
Kentfield Trading, Ltd............................. 5,985,000 1.7% 44,137 *
300 Drakes Landing Road, Suite 180
Greenbrae, CA 94904
Argent Classic Convertible Arbitrage Fund 4,000,000 1.2% 29,499 *
(Bermuda) L.P..................................
73 Front Street Hamilton HM 12
P.O. Box HM 3013 Hamilton HM MX, Bermuda
CIBC World Markets International Arbitrage Corp.... 3,000,000 * 22,124 *
425 Lexington Avenue, 5th Floor
New York, NY 10017
Massachusetts Mutual Life Insurance Company........ 2,565,000 * 18,916 *
c/o David L. Babson & Company Inc.
1295 State Street
Springfield, MA 01111
MassMutual High Yield Partners II LLC.............. 2,565,000 * 18,916 *
c/o David L. Babson & Company Inc.
1295 State Street
Springfield, MA 01111
MassMutual Corporate Value Partners Limited........ 1,525,000 * 11,246 *
c/o David L. Babson & Company Inc.
1295 State Street
Springfield, MA 01111
MassMutual Corporate Investors..................... 875,000 * 6,453 *
c/o David L. Babson & Company Inc.
1295 State Street
Springfield, MA 01111
New York Life Insurance and Annuity Corporation.... 850,000 * 6,268 *
51 Madison Avenue, Room 203
New York, NY 10010
MassMutual Participation Investors................. 470,000 * 3,466 *
c/o David L. Babson & Company Inc.
1295 State Street
Springfield, MA 01111
</TABLE>
<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>
SG Cowen Securities Corp.(3)....................... 250,000 * 1,844 *
Financial Square, 25th Floor
New York, NY 10005
</TABLE>
* 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) SG Cowen Securities Corp. has acted an underwriter for an issuance of our
securities within the past three years. The amounts presented herein are in
addition to those reported by the selling securityholder in the prospectus
dated May 22, 2000 and the prospectus supplement dated June 16, 2000.
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INVESTING IN THE SECURITIES OFFERED HEREBY INVOLVE 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.
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The date of this Prospectus Supplement is June 29, 2000.
