Form 4: Amplitude CEO's Spouse Sells Shares

Spenser Skates' spouse sold 42,743 shares of Amplitude Class A Common Stock for a weighted average price of $12.0121 per share, following a conversion from Class B shares.

Summary

• Spenser Skates, Amplitude, Inc.'s Chief Executive Officer, Director, and 10% Owner, reported a change in beneficial ownership.
• The transaction involved the conversion of 42,743 shares of Class B Common Stock into Class A Common Stock on December 24, 2025, with a deemed price of $0.00.
• Immediately following the conversion, 42,743 shares of Class A Common Stock were sold by Mr. Skates' spouse on December 24, 2025.
• The sales were executed at a weighted average price of $12.0121 per share, with individual trades ranging from $12.0000 to $12.0400.
• These sales were conducted pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person's spouse on August 8, 2025.
• Following these transactions, Mr. Skates' spouse indirectly beneficially owns 567,257 shares of Class B Common Stock, and Mr. Skates directly owns 5,342,146 shares of Class B Common Stock.

Sentiment

Score: 3

Explanation: The sentiment is moderately negative. While the transaction was pre-planned under a 10b5-1 plan, insider selling by the CEO's spouse can still be interpreted by the market as a lack of strong conviction or a belief that the stock is fully valued, potentially leading to negative investor sentiment.

Negatives

• The sale of shares by the CEO's spouse, even under a pre-arranged plan, can be interpreted by the market as a negative signal regarding the company's near-term prospects or valuation.

Risks

• Insider selling, particularly by a high-ranking executive or their immediate family, can sometimes lead to negative investor sentiment and potential downward pressure on the stock price.

Future Outlook

No forward-looking statements or guidance were provided in this Form 4 filing, as it primarily reports an insider transaction.

Industry Context

Insider transactions, such as sales by executives or their family members, are common occurrences across all industries. While often pre-scheduled through 10b5-1 plans to avoid accusations of trading on material non-public information, they are still closely watched by investors for signals about management's confidence in the company's future.

Related Party Transactions

• The sale of Class A Common Stock was executed by the spouse of Spenser Skates, the Chief Executive Officer, Director, and 10% Owner of Amplitude, Inc. This constitutes a related party transaction.

Stakeholder Impact

• Shareholders may interpret the insider selling as a negative signal, potentially influencing their perception of the company's future performance and stock valuation.
• Employees might observe the transaction, but direct impact is unlikely unless it triggers broader market reactions.

Key Dates

Recommendation

While the sale was conducted under a pre-arranged 10b5-1 plan, insider selling by the CEO's spouse is generally viewed as a cautious signal. It doesn't necessarily warrant an immediate 'sell' recommendation without further negative catalysts, but it suggests a 'hold' position to monitor future developments and management's actions, as it could indicate a belief that the stock is fully valued at current levels.

Keywords

Amplitude, AMPL, Insider Trading, Form 4, Stock Sale, CEO, Beneficial Ownership, 10b5-1 Plan