UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM 15
CERTIFICATION AND NOTICE OF TERMINATION OF REGISTRATION
UNDER SECTION 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934
OR SUSPENSION OF DUTY TO FILE REPORTS UNDER SECTIONS 13 AND 15(d)
OF THE SECURITIES EXCHANGE ACT OF 1934.
Commission File Number: 001-38997
RAPT Therapeutics, Inc.
(Exact name of registrant as specified in its charter)
561 Eccles Avenue
South
San Francisco, California 94080
Tel: (650) 489-9000
(Address, including zip code, and telephone number, including area code, of registrant’s principal executive offices)
Common stock, par value $0.0001 per share
(Title of each class of securities covered by this Form)
None
(Titles of all
other classes of securities for which a duty to file reports under section 13(a) or 15(d) remains)
Please place an X in the box(es) to designate the appropriate rule provision(s) relied upon to terminate or suspend the duty to file reports:
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| Rule 12g-4(a)(1) |
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☒ |
| Rule 12g-4(a)(2) |
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☐ |
| Rule 12h-3(b)(1)(i) |
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☒ |
| Rule 12h-3(b)(1)(ii) |
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☐ |
| Rule 15d-6 |
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☐ |
| Rule 15d-22(b) |
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☐ |
Approximate number of holders of record as of the certification or notice date: 1*
| * |
Pursuant to an Agreement and Plan of Merger, dated as of January 19, 2026, by and among RAPT Therapeutics,
Inc., a Delaware corporation (“Company”), GlaxoSmithKline LLC, a Delaware limited liability company (“Parent”), Redrose Acquisition Co., a Delaware corporation (“Merger Sub”), and solely for
the purposes set forth therein, GSK plc, a public limited company organized under the laws of England and Wales, Merger Sub merged with and into the Company, with the Company continuing as the surviving corporation and as a wholly owned subsidiary
of Parent. |
Pursuant to the requirements of the Securities Exchange Act of 1934, RAPT Therapeutics, Inc. has caused this
certification/notice to be signed on its behalf by the undersigned duly authorized person.
Date: March 18, 2026
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| RAPT THERAPEUTICS, INC. |
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| By: |
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/s/ Justin Huang |
| Name: |
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Justin Huang |
| Title: |
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President and Secretary |
