Form 4: PubMatic Officer Sells Shares Under 10b5-1 Plan

PubMatic's Chief Growth Officer, Paulina Klimenko, has sold a portion of her Class A Common Stock holdings through a pre-arranged trading plan.

Summary

• Paulina Klimenko, Chief Growth Officer at PubMatic, Inc., reported a transaction involving Class A Common Stock.
• The transaction, dated April 6, 2026, involved the sale of 11,784 shares.
• These shares were sold under a Rule 10b5-1 trading plan adopted on May 8, 2025.
• The sale occurred at a weighted average price of $8.443, with individual sales ranging from $8.32 to $8.52 per share.
• Following the transaction, Klimenko beneficially owns 61,436 shares of Class A Common Stock, held directly.

Sentiment

Score: 4

Explanation: StockSavvy.ai views this as a neutral to slightly negative event due to the insider sale, although the use of a 10b5-1 plan mitigates significant concern.

Positives

• The sale was conducted under a Rule 10b5-1 trading plan, indicating pre-planned and potentially less market-sensitive execution.
• The reporting person continues to hold a significant number of shares (61,436) after the sale.

Negatives

• A significant number of shares were sold by a key executive, which could be perceived negatively by the market.
• The sale represents a reduction in the executive's direct ownership stake in the company.

Risks

• Potential for negative market perception due to insider selling, even if executed under a 10b5-1 plan.
• Future sales under the 10b5-1 plan could further reduce insider ownership.

Future Outlook

The filing does not contain forward-looking statements or guidance. It solely reports a past transaction.

Management Comments

• The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 8, 2025.
• The price reported in this line item is a weighted average price. These shares were sold at prices ranging from $8.32 to $8.52, inclusive.
• The Reporting Person undertakes to provide to the Issuer, any securityholder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth herein.

Industry Context

StockSavvy.ai notes that insider selling, even under a 10b5-1 plan, is a common event in the ad-tech industry. Investors often scrutinize these transactions for insights into executive confidence, though the existence of a pre-arranged plan mitigates concerns about opportunistic timing.

Stakeholder Impact

• Shareholders: May interpret the sale as a signal of reduced confidence, though the 10b5-1 plan suggests a pre-determined strategy.
• Employees: May observe executive compensation and ownership trends.
• Management: The sale reflects personal financial planning by the executive.

Next Steps

• The reporting person may continue to sell shares under the existing Rule 10b5-1 trading plan.
• The company may provide further updates on executive shareholdings in future filings.

Key Dates

Keywords

PubMatic, PUBM, Form 4, Insider Trading, Stock Sale, 10b5-1 Plan, Class A Common Stock, Paulina Klimenko, Chief Growth Officer