[144] Integral Ad Science Holding Corp. SEC Filing

Rhea-AI Filing Summary

Integral Ad Science Holding Corp. (IAS) Form 144 notice reports a proposed sale of 2,784 common shares held in brokerage at Fidelity Brokerage Services with an aggregate market value of $24,995.59. The filer acquired these shares on 09/02/2025 through restricted stock vesting from the issuer and indicates the payment nature as compensation. The approximate date of sale is listed as 09/03/2025 on NASDAQ. The filing also discloses two prior common-share sales by the same person in the past three months: 2,851 shares on 06/03/2025 for $22,707.36 and 1,962 shares on 07/07/2025 for $16,539.47. The signer certifies no undisclosed material adverse information.

Positive

• Transparent disclosure of the proposed sale and prior sales, consistent with Rule 144 requirements
• Transaction identified as restricted stock vesting and payment as compensation, clarifying acquisition source

Negative

• Immediate sale after vesting (approximate sale date 09/03/2025) could be viewed as insider liquidating recently vested compensation
• Recent multiple sales in June and July indicate ongoing disposals of holdings by the same person

Insights

Securities Analyst

TL;DR: Insider intends to sell newly vested shares (2,784) immediately after vesting; recent sales show ongoing liquidity of holdings.

The notice documents a routine Rule 144 filing where restricted stock vested on 09/02/2025 and the holder proposes to sell 2,784 shares on 09/03/2025 via Fidelity on NASDAQ, valued at $24,995.59. Prior sales in June and July (2,851 and 1,962 shares) produced cash proceeds of $22,707.36 and $16,539.47 respectively, indicating the filer has engaged in multiple recent disposals of common stock. This filing appears procedural and compliant with Rule 144 disclosure requirements; it does not itself convey operational or financial performance information about the issuer.

Corporate Governance Expert

TL;DR: Transaction reflects normal post-vesting disposition by an affiliate; disclosure and certification are included.

The transaction is described as restricted stock vesting with payment characterized as compensation, suggesting shares were issued under an equity plan. The filer signed the Form 144 attesting no material nonpublic information is known. From a governance perspective, the filing is a standard transparency measure; the amounts disclosed are small relative to typical market caps and lack indicators of insider signaling about corporate matters.

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	2784	24995.59	166163514	09/03/2025	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	09/02/2025	Restricted Stock Vesting	Issuer			2784	09/02/2025	Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Alexis Gil II 12 E 49th Street 20th Floor New York NY 10017	Common	06/03/2025	2851	22707.36
Alexis Gil II 12 E 49th Street 20th Floor New York NY 10017	Common	07/07/2025	1962	16539.47

144: Remarks and Signature

Remarks

Date of Notice

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What does Integral Ad Science (IAS) Form 144 filed on 09/03/2025 report?

The Form 144 reports a proposed sale of 2,784 common shares acquired on 09/02/2025 via restricted stock vesting, with an aggregate market value of $24,995.59, planned for sale on 09/03/2025 on NASDAQ.

Who holds the shares to be sold according to the Form 144?

The shares are held at Fidelity Brokerage Services LLC; the filer acquired them from the issuer as restricted stock vesting and lists the nature of payment as compensation.

Has the filer sold IAS shares recently before this Form 144?

Yes. The filer sold 2,851 shares on 06/03/2025 for $22,707.36 and 1,962 shares on 07/07/2025 for $16,539.47.

Does the Form 144 state whether the filer knows any undisclosed material information?

Yes. The signer represents by signature that they do not know any material adverse information about the issuer that has not been publicly disclosed.

On which exchange is the proposed sale expected to occur?

The proposed sale is listed to occur on NASDAQ.