Issuer Free Writing Prospectus
Filed pursuant to Rule 433
Registration Statement No. 333-271763
December 5, 2023
Integral Ad Science Announces Pricing of Secondary Offering
of Common Stock by Selling Stockholders
NEW YORK, NY December 5, 2023 Integral Ad Science Holding Corp. (Nasdaq: IAS), a leading global media measurement and optimization
platform, today announced the pricing of an underwritten offering of 11,000,000 shares of its common stock by investment funds affiliated with Vista Equity Partners (the Selling Stockholders) at a price to the public of $14.00 per
share. The offering is expected to close on December 7, 2023, subject to the satisfaction of customary closing conditions. The underwriters will have a 30-day option to purchase up to an additional
1,650,000 shares of IASs common stock from the Selling Stockholders.
IAS is not selling any shares of common stock in this offering and will not
receive any proceeds from the sale of shares by the Selling Stockholders, but will bear the costs associated with the sale of such shares, other than any underwriting discounts and commissions.
Goldman Sachs & Co. LLC is acting as the underwriter of the offering.
The Registration Statement on Form S-3 relating to these securities has been filed with the SEC and became effective
upon such filing. The offering will be made only by means of a prospectus and an accompanying prospectus supplement. Before investing, prospective investors should read the prospectus, any accompanying prospectus supplement and the documents
incorporated by reference therein for more complete information. A copy of the prospectus and any prospectus supplement relating to this offering may be obtained, when available, by visiting the SECs website at www.sec.gov. Alternatively,
copies of the prospectus and prospectus supplement relating to the offering may be obtained if you request it by contacting: Goldman Sachs & Co. LLC, Attn: Prospectus Department, 200 West Street, New York, New York 10282, or by telephone at
1-866-471-2526, facsimile at 212-902-9316 or by
email at prospectus-ny@ny.email.gs.com.
This press release shall not constitute an offer to sell or a
solicitation of an offer to buy these securities, nor shall there be any offer or sale of these securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to the registration or qualification under the
securities laws of any such state or jurisdiction.
About Integral Ad Science
Integral Ad Science (IAS) is a leading global media measurement and optimization platform that delivers the industrys most actionable data to drive
superior results for the worlds largest advertisers, publishers, and media platforms. IASs software provides comprehensive and enriched data that ensures ads are seen by real people in safe and suitable environments, while improving
return on ad spend for advertisers and yield for publishers. Our mission is to be the global benchmark for trust and transparency in digital media quality.