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

Klaviyo Director and 10% owner Ed Hallen reported the sale of 757 Series A Common Stock shares through a pre-arranged 10b5-1 trading plan.

Summary

• Ed Hallen, a Director and 10% owner of Klaviyo, Inc. (KVYO), reported the sale of Series A Common Stock.
• The transactions occurred on December 15, 2025, and were executed under a Rule 10b5-1 trading plan adopted on June 12, 2025.
• A total of 157 shares were sold directly at a weighted average price of $30.13 per share, with prices ranging from $30.024 to $30.155.
• An additional 600 shares were sold directly at a weighted average price of $30.15 per share, with prices ranging from $30.15 to $30.155.
• Following these transactions, Ed Hallen beneficially owns 168,502 shares indirectly through Hodgkins Trust and 607,918 shares indirectly through Hodgkins LLC.

Sentiment

Score: 5

Explanation: The sentiment is neutral. While insider selling can sometimes be viewed negatively, the execution under a Rule 10b5-1 plan mitigates concerns, indicating a pre-scheduled disposition rather than a reaction to new information. The transaction size is also relatively small compared to total holdings.

Positives

• The sales were conducted under a pre-arranged Rule 10b5-1 trading plan, indicating a structured and pre-scheduled disposition of shares rather than a reaction to recent company performance.

Negatives

• Insider selling, even under a 10b5-1 plan, can sometimes be perceived as a slight negative signal regarding management's view on future stock price appreciation, though the impact is mitigated by the pre-planned nature.

Future Outlook

The filing does not contain any forward-looking statements or guidance regarding the company's future performance or strategic direction.

Industry Context

This Form 4 filing reports routine insider trading activity and does not provide information relevant to broader industry trends or competitive landscape analysis.

Related Party Transactions

• Ed Hallen's indirect beneficial ownership through Hodgkins Trust and Hodgkins LLC, where he serves as manager, constitutes related party dealings for the purpose of these share dispositions.

Stakeholder Impact

• Shareholders may note the insider selling, but the 10b5-1 plan context suggests it's a routine financial planning event for the insider rather than a signal about company performance. No direct impact on employees, customers, suppliers, or creditors is indicated.

Key Dates

Recommendation

The filing reports routine insider selling under a pre-arranged 10b5-1 plan. This type of transaction is generally not considered a strong indicator for future stock performance and does not provide new fundamental information about Klaviyo, Inc. Therefore, it does not warrant a change in investment recommendation based solely on this filing. Investors should continue to hold based on broader company fundamentals and market conditions.

Keywords

Klaviyo, KVYO, Ed Hallen, Insider Trading, Form 4, Stock Sale, 10b5-1 Plan, Director, 10% Owner, Beneficial Ownership