Form 4: SERA CEO Sells Shares for Tax Obligations

SERA Prognostics CEO Zhenya Lindgardt sold 28,215 shares of Class A Common Stock at a weighted average price of $3.04 to cover tax withholding obligations related to restricted stock unit vesting.

Summary

• Zhenya Lindgardt, Chief Executive Officer and Director of SERA PROGNOSTICS, INC. (SERA), reported a transaction involving Class A Common Stock.
• On December 9, 2025, Lindgardt sold 28,215 shares of Class A Common Stock.
• The shares were sold at a weighted average price of $3.04 per share, with individual transactions ranging from $2.91 to $3.10.
• The sale was explicitly stated as non-discretionary, mandated by the Issuer to cover tax withholding obligations associated with the vesting of restricted stock units (RSUs).
• Following this transaction, Lindgardt beneficially owns 768,081 shares of Class A Common Stock directly.

Sentiment

Score: 5

Explanation: The sentiment is neutral as the transaction is a non-discretionary 'sell to cover' for tax obligations, which is a routine event and does not reflect a discretionary investment decision by the CEO.

Negatives

• A significant number of shares (28,215) were sold by the Chief Executive Officer, which could be misinterpreted as a lack of confidence if the context of the sale (tax obligations) is not fully understood.

Future Outlook

This filing does not contain any forward-looking statements or guidance regarding the company's future performance or outlook.

Management Comments

• The sale represents the number of shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units ('RSUs').
• 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 insider transaction is specific to SERA PROGNOSTICS, INC. and its CEO, Zhenya Lindgardt. It does not directly reflect broader industry trends or competitive dynamics, as it is a routine, non-discretionary event related to executive compensation and tax obligations.

Stakeholder Impact

• Shareholders: The sale is a routine, non-discretionary event for tax purposes and is unlikely to significantly impact shareholder sentiment or the company's operational outlook.
• Employees: No direct impact on employees is indicated by this filing.

Key Dates

Recommendation

The transaction is a non-discretionary 'sell to cover' for tax withholding obligations related to RSU vesting. This type of insider sale is a routine event and does not typically signal a change in management's confidence in the company's future prospects or fundamental performance. Therefore, it does not warrant a change in investment recommendation based solely on this filing.

Keywords

SERA PROGNOSTICS, SERA, Form 4, Insider Transaction, Stock Sale, Zhenya Lindgardt, CEO, Tax Withholding, Restricted Stock Units, RSU