Form 15-12G INTEGRAL AD SCIENCE HOLD

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January 2, 2026 11:38 AM EST
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
001-40557

Integral Ad Science Holding Corp.
(Exact name of registrant as specified in its charter)

12 E 49th Street, 20th Floor
New York, NY 10017
(646) 278-4871
(Address, including zip code, and telephone number, including area code, of registrant’s principal executive offices)

Common Stock, par value $0.001 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:

Rule 12g-4(a)(1)
 ☒
Rule 12g-4(a)(2)
 ☐
Rule 12h-3(b)(1)(i)
 ☒
Rule 12h-3(b)(1)(ii)
 ☐
Rule 15d-6
 ☐
Rule 15d-22(b)
 ☐

Approximate number of holders of record as of the certification or notice date: One.

Pursuant to the requirements of the Securities Exchange Act of 1934, Integral Ad Science Holding Corp. has caused this certification/notice to be signed on its behalf by the undersigned duly authorized person.

Date: January 2, 2026
By:
/s/ Lisa Utzschneider
 
Name:
Lisa Utzschneider
 
Title:
Chief Executive Officer



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