# EDGAR Filing Document

**Accession Number:** 0001842718
**File Stem:** 0001193125-25-331268
**Filing Date:** 2025-12
**Character Count:** 10466
**Document Hash:** cac29d9e2f4965737630beddd05455d7
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-331268.hdr.sgml**: 20251223

**ACCESSION NUMBER**: 0001193125-25-331268

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20251223

**FILED AS OF DATE**: 20251223

**DATE AS OF CHANGE**: 20251223

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Utzschneider Lisa
- **CENTRAL INDEX KEY:** 0001651659

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-40557
- **FILM NUMBER:** 251602187

**MAIL ADDRESS:**
- **STREET 1:** 12 EAST 49TH STREET
- **STREET 2:** FLOOR 20
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10017
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** INTEGRAL AD SCIENCE HOLDING CORP.
- **CENTRAL INDEX KEY:** 0001842718
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-COMPUTER PROGRAMMING, DATA PROCESSING, ETC. [7370]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 830731995
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 12 EAST 49TH STREET
- **STREET 2:** 20TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10017
- **BUSINESS PHONE:** (646) 278-4871

**MAIL ADDRESS:**
- **STREET 1:** 12 EAST 49TH STREET
- **STREET 2:** 20TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10017

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** INTEGRAL AD SCIENCE HOLDING LLC
- **DATE OF NAME CHANGE:** 20210301

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** KAVACHA TOPCO, LLC
- **DATE OF NAME CHANGE:** 20210127

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[x] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

[ ] Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Utzschneider Lisa<br><sub>(Last) (First) (Middle)</sub><br>C/O INTEGRAL AD SCIENCE HOLDING CORP.<br>12 E. 49TH STREET, 20TH FLOOR<br><sub>(Street)</sub><br>NEW YORK, NY 10017<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2025-12-23 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director [ ] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_Chief Executive Officer_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>INTEGRAL AD SCIENCE HOLDING CORP. [ IAS ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Stock, $0.001 par value | 2025-12-23 |  | D<sup>(1)</sup> |  | 411985<sup>(2)</sup> | D | $10.30 | 0 | D |  |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| Market Stock Units | <sup>(3)</sup> | 2025-12-23 |  | M |  |  | 55567<sup>(4)(5)(6)</sup> | <sup>(3)</sup> | <sup>(3)</sup> | Common Stock, $0.001 par value | 55567 | $0 | 0 | D |  |
| Market Stock Units | <sup>(3)</sup> | 2025-12-23 |  | M |  |  | 157674<sup>(4)(5)(6)</sup> | <sup>(3)</sup> | <sup>(3)</sup> | Common Stock, $0.001 par value | 157674 | $0 | 0 | D |  |
| Market Stock Units | <sup>(3)</sup> | 2025-12-23 |  | M |  |  | 367222<sup>(4)(5)(6)</sup> | <sup>(3)</sup> | <sup>(3)</sup> | Common Stock, $0.001 par value | 367222 | $0 | 0 | D |  |
| Market Stock Units | <sup>(3)</sup> | 2025-12-23 |  | M |  |  | 975238<sup>(4)(5)(6)</sup> | <sup>(3)</sup> | <sup>(3)</sup> | Common Stock, $0.001 par value | 975238 | $0 | 0 | D |  |
| Options (Right to Buy) | $6.17 | 2025-12-23 |  | D |  |  | 2051991 | <sup>(7)</sup> | 2029-01-07 | Common Stock, $0.001 par value | 2051991 | $4.13 | 0 | D |  |

---

### Footnotes:

(1) Pursuant to the Agreement and Plan of Merger, dated as of September 24, 2025 (the "Merger Agreement"), by and among the Issuer, Igloo Group Parent, Inc. ("Parent") and Igloo Group Acquisition Company, Inc. ("Merger Sub"), Merger Sub merged with and into the Issuer (the "Merger"), with the Issuer surviving as a wholly owned subsidiary of Parent. At the effective time of the Merger (the "Effective Time"), each issued and outstanding share of the Issuer's common stock, par value $0.001 per share ("Common Stock"), owned by the reporting person immediately prior to the Effective Time was automatically cancelled, extinguished and converted into the right to receive $10.30 per share in cash, without interest thereon (the "Per Share Price").

(2) Reflects a reduction in the total shares beneficially owned due to an administrative error in the reporting person's Form 4 filed on January 8, 2025 and subsequent forms, which reported fewer shares sold than required.

(3) Upon the terms and subject to the conditions set forth in the Merger Agreement, the number of market stock units ("Company MSUs") reported was calculated based on a payout factor applicable to such Company MSUs determined based on the Per Share Price.

(4) Upon the terms and subject to the conditions set forth in the Merger Agreement, fifty percent of the Company MSUs reported were, at or immediately prior to the Effective Time, automatically cancelled and converted into the right to receive an amount in cash (without interest and subject to applicable withholding taxes) equal to the product of (i) the Per Share Price and (ii) the total number of shares of Common Stock subject to such Company MSU as of immediately prior to the Effective Time (the "Converted Cash Awards"). The Converted Cash Awards will, subject to the reporting person's continued service through the applicable vesting dates, vest and be payable at the time when the Company MSUs for which the Converted Cash Awards were exchanged would have vested pursuant to the terms thereof.

(5) Upon the terms and subject to the conditions set forth in the Merger Agreement, fifty percent of the Company MSUs reported were, at or immediately prior to the Effective Time, automatically cancelled and converted into a restricted limited partnership unit award with respect to an indirect parent entity of Parent (the "Replacement Company MSU Awards") with the number of units covered by such Replacement Company MSU Award to be equal to the quotient of (i) the product of (A) the Per Share Price and (B) the total number of shares of Company Common Stock subject to such Company MSU as of immediately prior to the Effective Time,

(6) (Continued from Footnote 5) and (ii) the fair market value of such unit as of the Effective Time (based on the same price per unit paid to acquire equity in such entity in connection with the transactions contemplated by the Merger Agreement). The Replacement Company MSU Awards will, subject to the reporting person's continued service through the applicable vesting dates, vest and be settled at the time when the Company MSUs for which the Replacement Company MSU Awards were exchanged would have vested pursuant to the terms thereof.

(7) Pursuant to the Merger Agreement, this stock option was, at or immediately prior to the Effective Time, cancelled and converted into the right to receive an amount in cash (without interest and subject to applicable withholding taxes) equal to the product of (i) the total number of shares of Common Stock subject to such option as of immediately prior to the Effective Time and (ii) the excess, if any, of the Per Share Price over the exercise price of such option.

**Signature:** /s/ Yossi Almani, by Power of Attorney  
**Date:** 2025-12-23

### Remarks:

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**