Amplitude, Inc. CEO and President Spenser Skates filed a Form 4 on October 28, 2026, reporting a series of Class B-to-Class A conversions and open-market sales of Class A Common Stock held indirectly through his spouse, executed on October 26 and October 28, 2026, pursuant to a Rule 10b5-1 trading plan.

Key Highlights

  • Reporting person: Spenser Skates, CEO and President of Amplitude, Inc., also identified as a Director and 10% Owner (NASDAQ:AMPL).
  • Conversion on October 26, 2026: 300 shares of Class B Common Stock converted into 300 shares of Class A Common Stock at $0, held indirectly by spouse.
  • Sales on October 26, 2026: 100 shares sold at $17.45 and 200 shares sold at $17.47, all indirectly held by spouse.
  • Conversion on October 28, 2026: 6,651 shares of Class B Common Stock converted into 6,651 shares of Class A Common Stock at $0, held indirectly by spouse.
  • Sale on October 28, 2026: 6,651 shares sold at a weighted average price of $17.5258, with individual trade prices ranging from $17.4500 to $17.7800, all indirectly held by spouse.
  • Trading plan: All sales were effected pursuant to a 10b5-1 trading plan adopted by the reporting person's spouse on June 11, 2026.
  • Remaining Class B shares (indirect): 193,070 shares of Class B Common Stock held indirectly by spouse following the October 28 transactions; 5,342,146 shares of Class B Common Stock held directly.

Skates Spouse Plan Sales and Class B Conversions at Amplitude

According to the filing, Spenser Skates - CEO, President, Director, and 10% Owner of Amplitude, Inc. (NASDAQ:AMPL) - reported transactions in Class A Common Stock that were held indirectly through his spouse. The activity spanned two dates, October 26 and October 28, 2026, and involved the conversion of Class B shares into Class A shares followed by open-market sales.

On October 26, 2026, the filing reports a conversion of 300 Class B shares into 300 Class A shares at $0, after which 100 shares were sold at $17.45 and 200 shares were sold at $17.47, reducing the spouse's indirect Class A holdings to zero following those trades. On October 28, 2026, an additional 6,651 Class B shares were converted into 6,651 Class A shares at $0, and those shares were then sold at a weighted average price of $17.5258, with individual trades ranging from $17.4500 to $17.7800. After these transactions, the spouse held 193,070 Class B shares indirectly, and Skates continued to hold 5,342,146 Class B shares directly.

The filing explains that Class B Common Stock is convertible at any time at the option of the holder into Class A Common Stock on a one-to-one basis, and also converts automatically upon certain events including transfer, death or incapacity of Mr. Skates, or his departure from the company under specified conditions. The filing notes that all reported sales were made pursuant to a 10b5-1 trading plan adopted by the reporting person's spouse on June 11, 2026. The form was signed by Elizabeth Fisher as attorney in fact for Spenser Skates on October 28, 2026.

What Was Disclosed

Spenser Skates filed a Form 4 disclosing conversions of Class B to Class A shares and subsequent open-market sales of 6,951 total Class A shares held indirectly through his spouse, executed October 26-28, 2026, under a spouse-adopted 10b5-1 plan.