Form 4: Klaviyo CFO Sells Shares Under 10b5-1 Plan

Klaviyo's Chief Financial Officer, Amanda Whalen, sold 14,000 shares of Series A Common Stock on December 18, 2025, under a pre-arranged Rule 10b5-1 trading plan.

Summary

• Klaviyo, Inc.'s Chief Financial Officer, Amanda Whalen, reported the sale of 14,000 shares of Series A Common Stock.
• The sales occurred on December 18, 2025, and were executed under a Rule 10b5-1 trading plan adopted on August 21, 2025.
• The shares were sold in two separate transactions: 13,540 shares at a weighted average price of $31.41 per share and 460 shares at a weighted average price of $30.59 per share.
• Following these transactions, Ms. Whalen beneficially owns 452,174 shares, comprising 52,642 shares of Series A Common Stock and 399,532 unvested restricted stock units.

Sentiment

Score: 4

Explanation: While the sale was pre-planned under a 10b5-1 plan, insider selling, even routine, can sometimes be interpreted as a slight negative signal regarding management's confidence or a desire for liquidity, rather than a strong positive indicator for future stock performance.

Positives

• The sales were conducted under a pre-arranged Rule 10b5-1 trading plan, indicating a planned liquidity event rather than a reaction to immediate negative information.

Negatives

• Insider selling, even under a 10b5-1 plan, can sometimes be perceived negatively by the market as it reduces the insider's direct equity stake.

Future Outlook

NA

Industry Context

This is an individual insider transaction and does not directly relate to broader industry trends or competitors, other than being a routine disclosure for a publicly traded company in the tech/software industry.

Stakeholder Impact

• Shareholders: May interpret the insider sale as a signal, though mitigated by the 10b5-1 plan. The reduction in direct equity ownership by a key executive could be viewed with slight caution.

Key Dates

Recommendation

The sale by the CFO, while significant in volume, was executed under a pre-arranged 10b5-1 plan, which mitigates the negative signal typically associated with insider selling. It suggests a planned liquidity event rather than a reaction to new, adverse company-specific information. Without additional context on the company's financial performance or strategic direction, this Form 4 alone does not warrant a change from a 'hold' position, as it's a routine insider disclosure. Investors should monitor future filings and company performance for more comprehensive insights.

Keywords

Klaviyo, KVYO, SEC Form 4, Insider Trading, Stock Sale, CFO, Amanda Whalen, Rule 10b5-1, Equity Sales, Beneficial Ownership