Form 4: SERA CIO Sells Shares for Tax Obligations

Sera Prognostics' Chief Information Officer, Robert Gardner Harrison, sold 5,962 shares of Class A Common Stock to cover tax withholding obligations.

Summary

• Robert Gardner Harrison, Chief Information Officer of Sera Prognostics, Inc. (SERA), sold 5,962 shares of Class A Common Stock.
• The transaction occurred on August 8, 2025, at a weighted average price of $2.54 per share.
• The sale was not a discretionary transaction by Mr. Harrison but was mandated by Sera Prognostics to cover tax withholding obligations related to the vesting of restricted stock units (RSUs).
• The shares were sold as part of a block trade with prices ranging from $2.28 to $2.73 per share.
• Following this transaction, Mr. Harrison directly beneficially owns 108,577 shares of Class A Common Stock.

Sentiment

Score: 5

Explanation: The sentiment is neutral as the transaction is a non-discretionary 'sell to cover' to meet tax obligations, which is a routine event and does not indicate a change in management's view of the company's prospects.

Future Outlook

No forward-looking statements or guidance are provided in this Form 4 filing.

Management Comments

• The sale is mandated by the Issuer's election to require the satisfaction of tax withholding obligations to be funded by 'sell to cover' transactions and does not represent a discretionary transaction by the Reporting Person.

Industry Context

This Form 4 filing details a routine, non-discretionary insider stock transaction (sell-to-cover) by a company executive. Such transactions are common across all industries when restricted stock units vest and tax obligations arise, and they typically do not reflect broader industry trends or company-specific performance beyond the vesting schedule.

Stakeholder Impact

• Shareholders: Minimal direct impact as this is a routine, non-discretionary transaction for tax purposes, not a signal of insider sentiment or a significant change in outstanding shares.

Key Dates

Recommendation

This Form 4 filing reports a routine 'sell to cover' transaction by an executive to satisfy tax obligations upon RSU vesting. It is a non-discretionary sale and does not reflect a change in the executive's investment thesis or the company's fundamental performance. Therefore, it provides no new information that would warrant a change in investment recommendation based solely on this filing.

Keywords

Sera Prognostics, SERA, Form 4, Insider Trading, Stock Sale, Tax Withholding, Restricted Stock Units, RSU, Chief Information Officer