Lisa Utzschneider - 01 Oct 2025 Form 4 Insider Report for INTEGRAL AD SCIENCE HOLDING CORP. (IAS)

Role
Chief Executive Officer, Director
Signature
/s/ Yossi Almani, by Power of Attorney
Issuer symbol
IAS
Transactions as of
01 Oct 2025
Transactions value $
$0
Form type
4
Date filed
02 Oct 2025, 16:13
Previous filing
12 Aug 2025
Next filing
07 Oct 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Utzschneider Lisa Chief Executive Officer, Director C/O INTEGRAL AD SCIENCE HOLDING CORP., 12 E 49TH STREET, 20TH FLOOR, NEW YORK /s/ Yossi Almani, by Power of Attorney 2025-10-02 0001651659

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction IAS Common Stock, $0.001 par value Options Exercise $0 +33.9K +8.9% $0.00 414K 01 Oct 2025 Direct F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction IAS Market Stock Units Options Exercise $0 -33.9K -4.05% $0.00 802K 01 Oct 2025 Common Stock, $0.001 par value 33.9K Direct F2, F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Represents shares of common stock earned upon the vesting of market stock units granted on April 1, 2024.
F2 The number of market stock units reported represents the maximum possible number of shares that are eligible for vesting, which is 225% of the number of shares that would be earned at target. The minimum payout factor that must be achieved to earn any payout is 60%. The actual number of shares that will vest on each vesting date will be determined by comparing the price of common stock on the applicable vesting date to the price of common stock on March 28, 2024 (i.e., number of vested shares is equal to (i) the number of shares at target payout multiplied by (ii) (a) the average price of common stock for the 10 trading days immediately preceding the applicable vesting date divided by (b) the closing stock price on March 28, 2024).
F3 The market stock units vest 25% on April 1, 2025 and in equal installments every three months thereafter over a three year period, subject to continued employment.