A Form 144 notice of proposed sale of securities was filed on November 9, 2026, by Spenser Skates on behalf of Anne L. Skates, spouse of Spenser J. Skates, an Officer and Director of Amplitude, Inc., covering 48 Class A shares with an aggregate market value of $838.77.

Key Highlights

  • Proposed sale: 48 Class A shares of Amplitude, Inc. with an aggregate market value of $838.77, with an approximate sale date of November 9, 2026, on NASDAQ.
  • Account holder: Anne L. Skates, identified in the filing as the spouse of Spenser J. Skates, an Officer and Director of Amplitude, Inc.
  • Original acquisition: The 48 shares were acquired on December 7, 2011, as Pre-IPO Shares from the issuer, with payment made in cash on the same date.
  • Shares outstanding: The filing reports 104,103,514 Class A shares outstanding at the time of the notice.
  • Prior three-month sales: Sales in the account of Anne L. Skates between September 10, 2026, and November 5, 2026, totaled multiple transactions including 185,000 shares sold on September 10, 2026, for gross proceeds of $2,275,219.06.
  • Rule 10b5-1 plan: The filing indicates a plan adoption or instruction date of June 11, 2026.
  • Broker: Fidelity Brokerage Services LLC, 900 Salem Street, Smithfield, RI 02917.

Anne L. Skates Proposed Sale and Recent Transaction History at Amplitude

According to the Form 144 filing submitted to the SEC, Spenser Skates filed a notice of proposed sale covering 48 Class A shares of Amplitude, Inc. (NASDAQ:AMPL) to be sold in the account of Anne L. Skates. The filing states: "Today's sale and the securities sold in the past 3 months took place in the account of Anne L. Skates, who is the spouse of Spenser J. Skates, an Officer and Director of the company." The filer's relationship to the issuer is described as "Member of immediate family of any of the foregoing."

The 48 shares proposed for sale carry an aggregate market value of $838.77, according to the filing. These shares were acquired on December 7, 2011, as Pre-IPO Shares from the issuer, with cash payment on that same date. The filing identifies Fidelity Brokerage Services LLC as the executing broker and notes a Rule 10b5-1 plan adoption date of June 11, 2026.

The filing also discloses sales made in Anne L. Skates's account during the prior three months. These include 185,000 Class A shares sold on September 10, 2026, for gross proceeds of $2,275,219.06; 1,374 shares on September 30, 2026, for $19,857.42; 3,539 shares on October 1, 2026, for $51,138.55; 70,087 shares on October 2, 2026, for $1,017,553.05; 107,136 shares on October 23, 2026, for $1,876,822.62; 300 shares on October 26, 2026, for $5,239.00; 16,499 shares on October 28, 2026, for $288,472.75; 901 shares on November 4, 2026, for $15,734.05; and 61 shares on November 5, 2026, for $1,105.49.

What Was Disclosed

Amplitude, Inc. is the subject of a Form 144 notice covering the proposed sale of 48 Class A shares, valued at $838.77, from the account of Anne L. Skates, spouse of company Officer and Director Spenser J. Skates, with transactions executed under a Rule 10b5-1 plan adopted June 11, 2026.