Issuer Free Writing Prospectus
Filed pursuant to Rule 433
Registration Statement No. 333-271763
December 4, 2023
Integral Ad Science Announces Launch of Secondary Offering
of Common Stock by Selling Stockholders
NEW YORK, NY December 4, 2023 Integral Ad Science Holding Corp. (Nasdaq: IAS), a leading global media measurement and optimization platform,
today announced the commencement of a public offering of its common stock by investment funds affiliated with Vista Equity Partners (the Selling Stockholders). The Selling Stockholders are offering 11,000,000 shares of IASs
common stock pursuant to a registration statement on Form S-3 (the Registration Statement) filed with the Securities and Exchange Commission (the SEC) on May 9, 2023.
The Selling Stockholders intend to grant the underwriters 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 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.