[Form 4] Amplitude, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Amplitude, Inc. (AMPL) reported an insider equity transaction by its Chief Financial Officer, Andrew Casey. On November 15, 2025, the company withheld 54,400 shares of Class A Common Stock at $10.73 per share to cover tax withholding obligations tied to the vesting of restricted stock units (RSUs). This withholding is described as not representing a market sale by the executive. Following the transaction, Casey beneficially owned 1,106,208 shares of Class A Common Stock, which the filing states includes 1,140,440 RSUs.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Casey Andrew

(Last) (First) (Middle)

C/O AMPLITUDE, INC.

201 3RD STREET, SUITE 200

(Street)

SAN FRANCISCO CA 94103

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Amplitude, Inc. [ AMPL ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Financial Officer

3. Date of Earliest Transaction (Month/Day/Year)
11/15/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	11/15/2025		F(1)		54,400	D	$10.73	1,106,208(2)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents shares of the Issuer's Class A Common Stock withheld by the Issuer solely to satisfy tax withholding obligations in connection with the net issuance of shares of the Issuer's Class A Common Stock delivered to the reporting person on November 15, 2025, from the vesting of restricted stock units ("RSUs"), and does not represent a sale by the reporting person.

2. Includes 1,140,440 RSUs.

Remarks:

	/s/ Elizabeth Fisher, as attorney in fact for Andrew Casey	11/18/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did Amplitude (AMPL) report for its CFO?

Amplitude reported that its Chief Financial Officer, Andrew Casey, had 54,400 shares of Class A Common Stock withheld on November 15, 2025 to satisfy tax withholding obligations from RSU vesting.

Did the Amplitude CFO sell shares in the open market in this Form 4?

No. The filing states the 54,400 shares of Class A Common Stock were withheld by the issuer solely to satisfy tax withholding obligations and explicitly notes this does not represent a sale by the reporting person.

At what price were the Amplitude shares withheld for tax purposes?

The shares of Amplitude Class A Common Stock withheld for tax purposes were valued at $10.73 per share in the reported transaction.

How many Amplitude shares does the CFO beneficially own after the transaction?

After the tax withholding transaction, Andrew Casey beneficially owned 1,106,208 shares of Amplitude Class A Common Stock, according to the filing.

How many restricted stock units (RSUs) are included in the CFO’s Amplitude holdings?

The filing states that the CFO’s holdings include 1,140,440 RSUs as part of his beneficial ownership of Amplitude Class A Common Stock.

What triggered the Amplitude share withholding reported on November 15, 2025?

The withholding of 54,400 shares was triggered by the vesting of RSUs on November 15, 2025, with the issuer retaining shares solely to cover tax withholding obligations.