A Form 144 notice of proposed sale was filed on November 13, 2026, by Spenser Skates on behalf of Anne L. Skates, spouse of an officer and director of Amplitude, Inc., covering 29 Class A shares with an aggregate market value of $506.53.

Key Highlights

  • Proposed sale: 29 Class A shares of Amplitude, Inc. with an aggregate market value of $506.53, to be sold through Fidelity Brokerage Services LLC on NASDAQ.
  • Seller relationship: The filing identifies Spenser Skates as the filer and states the securities are held by Anne L. Skates, described as "the spouse of Spenser J. Skates, an Officer and Director of the company."
  • Original acquisition: The 29 shares were acquired on December 7, 2011, as Pre-IPO Shares from the issuer, with payment made in cash on the same date.
  • Prior three-month sales: Anne L. Skates sold a combined total of 384,956 Class A shares across eleven transactions between September 10, 2026, and November 12, 2026, generating gross proceeds as reported in the filing.
  • 10b5-1 plan: The filing indicates a Rule 10b5-1 plan adoption date of June 11, 2026.
  • Shares outstanding: 104,103,514 Class A shares were listed as outstanding at the time of the notice.

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

According to the Form 144 filing dated November 13, 2026, Spenser Skates filed a notice of proposed sale covering 29 Class A shares of Amplitude, Inc. (NASDAQ:AMPL), to be sold through Fidelity Brokerage Services LLC. The filing states the securities are held in the account of Anne L. Skates, who is identified as "the spouse of Spenser J. Skates, an Officer and Director of the company." The aggregate market value of the proposed sale is listed as $506.53.

The filing discloses that the 29 shares subject to the proposed sale were originally acquired on December 7, 2011, as Pre-IPO Shares directly from the issuer, with cash payment made on the same date. The approximate date of sale listed in the filing is November 13, 2026. The filing also notes that the sale is being conducted under a Rule 10b5-1 plan adopted on June 11, 2026.

As required by Form 144, the filing also discloses sales of Amplitude Class A shares by Anne L. Skates during the three months preceding the notice. Those transactions span eleven separate sale dates from September 10, 2026, through November 12, 2026. The largest single transaction listed was 185,000 shares sold on September 10, 2026, generating gross proceeds of $2,275,219.06. Additional sales ranged from 11 shares ($192.12) on November 12, 2026, to 107,136 shares ($1,876,822.62) on October 23, 2026. The total shares sold across all eleven prior transactions, as listed in the filing, amounts to 384,956 Class A shares.

What Was Disclosed

Spenser Skates filed a Form 144 notice covering a proposed sale of 29 Class A shares of Amplitude, Inc., with an aggregate market value of $506.53, on behalf of spouse Anne L. Skates, and disclosed eleven prior Class A share sales totaling 384,956 shares over the preceding three months.