Amplitude officer plans sale of 185K shares

Amplitude, Inc. (AMPL) is the issuer for a Rule 144 notice covering a proposed sale of up to 185,000 shares of Class A common stock.

Rhea-AI Filing Summary

Amplitude, Inc. (AMPL) is the issuer for a Rule 144 notice covering a proposed sale of up to 185,000 shares of Class A common stock. The shares have an estimated aggregate market value of $2,275,219.06. The securities were acquired on December 7, 2011 as Pre-IPO Shares from the issuer for cash. The notice states that the trades took place in the account of Anne L. Skates, spouse of officer Spenser Skates.

Key Figures

Shares proposed for sale: 185,000 shares Estimated aggregate market value: $2,275,219.06 Acquisition date: December 7, 2011 +2 more

5 metrics

Shares proposed for sale 185,000 shares Class A common stock covered by the Rule 144 notice

Estimated aggregate market value $2,275,219.06 Value of 185,000 Class A shares proposed to be sold

Acquisition date December 7, 2011 Date the Pre-IPO Shares were acquired from the issuer for cash

Notice date September 10, 2026 Date of the Form 144 notice

Form 144 share class Class A common stock Security type for the proposed Rule 144 sale

Key Terms

Rule 144, Pre-IPO Shares, attorney-in-fact, Class A

4 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144"

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Pre-IPO Shares financial

"Pre-IPO Shares | Issuer | | | 185000 | 12/07/2011 | Cash"

attorney-in-fact regulatory

"as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Spenser Skates"

An attorney-in-fact is the person or entity given legal authority through a power of attorney to act on behalf of another for specific tasks, such as signing documents, voting shares, or handling transactions. For investors, this matters because it lets a trusted representative make timely decisions or complete paperwork when the owner cannot, much like handing keys to someone to run errands on your behalf—so checks on scope and limits of that authority are important.

Class A financial

"Class A | Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917"

Class A denotes a specific group of a company’s shares that carry a particular set of rights—most commonly different voting power or dividend priority compared with other share classes. Think of it like different seats on a bus where some seats let you steer and others only ride: knowing whether a share is Class A tells investors how much influence they have over company decisions and how returns might be distributed, which affects control and value.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does the Form 144 filing disclose for Amplitude, Inc. (AMPL)?

The filing discloses a proposed sale under Rule 144 of up to 185,000 shares of Amplitude, Inc. Class A common stock, with an estimated aggregate market value of $2,275,219.06, held in the account of the spouse of company officer Spenser Skates.

Whose shares are covered by this AMPL Form 144 notice?

The shares are for the account of Spenser Skates, and the notice remarks that trades took place in the account of Anne L. Skates, who is identified as the spouse of Spenser Skates, an officer of Amplitude, Inc.

How many Amplitude (AMPL) shares are proposed to be sold and of what class?

The notice covers a proposed sale of up to 185,000 shares of Class A common stock of Amplitude, Inc., to be sold through Fidelity Brokerage Services LLC.

What is the estimated market value of the AMPL shares in this Form 144?

The estimated aggregate market value of the Amplitude, Inc. Class A shares covered by the notice is $2,275,219.06, as stated in the securities information section.

When and how were the AMPL shares originally acquired?

The Class A shares covered by the notice were acquired on December 7, 2011 as Pre-IPO Shares from the issuer, Amplitude, Inc., for cash.

Which broker is involved in the proposed sale of AMPL shares?

The proposed sale of the 185,000 Class A Amplitude, Inc. shares is to be executed through Fidelity Brokerage Services LLC, as listed in the securities information section.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/10/2026 - 04:36 PM EDT Accepted by SEC EDGAR 09/10/2026 - 04:35 PM EDT Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001882913
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Amplitude, Inc.
SEC File Number	001-40817
Address of Issuer	201 THIRD STREET, SUITE 200 SAN FRANCISCO CALIFORNIA 94103
Phone	(415) 231-2353
Name of Person for Whose Account the Securities are To Be Sold	Skates Spenser
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Member of immediate family of any of the foregoing

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Class A	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	185000	2275219.06	101261624	09/10/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Class A	12/07/2011	Pre-IPO Shares	Issuer			185000	12/07/2011	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks	Todays trades took place in Anne L. Skates account she is the spouse of Spenser Skates who is an officer in the company.
Date of Notice	09/10/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	06/11/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Daniel Tucci, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Spenser Skates
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)