A Form 144 notice of proposed sale was filed on October 28, 2026, by Spenser Skates on behalf of Anne L. Skates, his spouse, covering 16,499 Class A shares of Amplitude, Inc., a digital analytics software company headquartered in San Francisco, California.

Key Highlights

  • Proposed sale: 16,499 Class A shares of Amplitude, Inc. with an aggregate market value of $288,472.75, according to the filing.
  • Seller: Anne L. Skates, identified in the filing as the spouse of Spenser Skates, an Officer and Director of Amplitude, Inc.
  • Broker: Fidelity Brokerage Services LLC, 900 Salem Street, Smithfield, RI 02917, is named as the executing broker.
  • Shares outstanding: The filing lists 101,261,624 Class A shares outstanding as of the notice date.
  • Original acquisition: The 16,499 shares were acquired on December 7, 2011, as pre-IPO shares from the issuer, paid for in cash.
  • Trading plan: The filing indicates reliance on Rule 10b5-1, with a plan adoption date of June 11, 2026.
  • Exchange: The securities are listed on NASDAQ, as stated in the filing.

Anne L. Skates Proposed Class A Share Sale at Amplitude, Inc.

According to the Form 144 filed with the U.S. Securities and Exchange Commission, Spenser Skates filed a notice of proposed sale for 16,499 Class A shares of Amplitude, Inc. (NASDAQ:AMPL) to be sold through Fidelity Brokerage Services LLC. The filing notes that the securities are held in the account of Anne L. Skates, who the filing identifies as the spouse of Spenser Skates, described as "an Officer and Director of the company." Amplitude, Inc. is headquartered at 201 Third Street, Suite 200, San Francisco, California 94103.

The filing discloses that the 16,499 shares proposed for sale were originally acquired on December 7, 2011, as pre-IPO shares purchased directly from the issuer for cash. The proposed sale carries an aggregate market value of $288,472.75, based on figures provided in the filing. The notice states an approximate sale date of October 28, 2026, and identifies NASDAQ as the exchange on which the transaction is to occur.

The filing also discloses prior sales of Class A shares by Anne L. Skates during the three months preceding the notice. Those sales occurred on September 10, 2026 (185,000 shares, gross proceeds of $2,275,219.06); September 30, 2026 (1,374 shares, $19,857.42); October 1, 2026 (3,539 shares, $51,138.55); October 2, 2026 (70,087 shares, $1,017,553.05); October 23, 2026 (107,136 shares, $1,876,822.62); and October 26, 2026 (300 shares, $5,239.00), as listed in the filing's "Securities Sold During The Past 3 Months" section. The filing states that these sales, along with today's proposed sale, all took place under a Rule 10b5-1 plan adopted on June 11, 2026.

What Was Disclosed

The Form 144 notice, filed October 28, 2026, covers a proposed sale of 16,499 Class A shares of Amplitude, Inc. by Anne L. Skates, spouse of Officer and Director Spenser Skates, through Fidelity Brokerage Services LLC under a Rule 10b5-1 plan adopted June 11, 2026.