Form 4: Integral Ad Science Director Sells Shares in Merger

Integral Ad Science Holding Corp. Director Jill Putman disposed of all common stock holdings following the company's merger into a wholly-owned subsidiary.

Summary

• Jill Putman, a Director of Integral Ad Science Holding Corp. (IAS), reported the disposal of 132,355 shares of common stock.
• The transaction occurred on December 23, 2025, as a direct result of the merger of IAS with Igloo Group Acquisition Company, Inc. (Merger Sub).
• IAS became a wholly-owned subsidiary of Igloo Group Parent, Inc. (Parent) at the effective time of the merger.
• Each outstanding share of IAS common stock owned by the reporting person was automatically cancelled and converted into the right to receive $10.30 per share in cash.
• The disposed shares included 17,637 unvested restricted stock units (RSUs) which fully vested immediately prior to the merger's effective time and were converted into the right to receive cash at the Per Share Price.

Sentiment

Score: 7

Explanation: The sentiment is positive for shareholders who received a cash payout for their shares and RSUs at a pre-determined price, indicating a successful exit for investors in the acquired company.

Positives

• Shareholders, including the reporting person, received a cash payout of $10.30 per share for their common stock.
• Unvested restricted stock units (RSUs) held by the reporting person fully vested and were converted into cash at the merger price, providing liquidity.

Negatives

• Integral Ad Science Holding Corp. ceased to be an independent publicly traded company, becoming a wholly-owned subsidiary of Igloo Group Parent, Inc.

Future Outlook

NA

Management Comments

• The filing was signed by Yossi Almani, by Power of Attorney, on behalf of Jill Putman.

Industry Context

This transaction represents a consolidation event within the ad tech industry, where Integral Ad Science, a provider of digital ad verification, was acquired by a private entity. Such mergers can lead to increased market concentration and potentially alter competitive dynamics.

Stakeholder Impact

• Shareholders: Received a cash payment of $10.30 per share for their common stock, providing liquidity and a definitive return on investment.
• Employees (holding RSUs): Those with unvested restricted stock units saw them fully vest and convert to cash, providing a financial benefit.

Key Dates

Keywords

Integral Ad Science, IAS, Merger, Form 4, Insider Transaction, Stock Disposal, Cash Acquisition, Restricted Stock Units, Corporate Governance