Amplitude CFO has 72K shares withheld for taxes

Amplitude, Inc. (AMPL) reported that its Chief Financial Officer, Andrew Casey, had 72,814 shares of Class A Common Stock withheld on August 17, 2026.

Rhea-AI Filing Summary

Amplitude, Inc. (AMPL) reported that its Chief Financial Officer, Andrew Casey, had 72,814 shares of Class A Common Stock withheld on August 17, 2026. The shares were withheld by the company solely to satisfy tax withholding obligations related to the vesting of restricted stock units and are explicitly stated not to represent a sale by the reporting person. After this tax-withholding transaction, Casey directly holds 1,363,338 shares of Class A Common Stock, including 814,949 RSUs.

Insider Trade Summary

Tax Withholding: 72,814 shares

Tax Withholding 1 txn

Insider Casey Andrew

Role Chief Financial Officer

Type	Security	Shares	Price	Value
Tax Withholding	Class A Common Stock F1, F2	72,814	$13.03	$949K

Holdings After Transaction: Class A Common Stock — 1,363,338 shares (Direct)

Footnotes (2)

1. F1. 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 August 15, 2026, from the vesting of restricted stock units ("RSUs"), and does not represent a sale by the Reporting Person.
2. F2. Includes 814,949 RSUs.

Key Figures

Shares withheld for taxes: 72,814 shares Reference price per share: $13.03 per share Shares held after transaction: 1,363,338 shares +1 more

4 metrics

Shares withheld for taxes 72,814 shares Class A Common Stock withheld on August 17, 2026 to satisfy tax withholding obligations

Reference price per share $13.03 per share Price applied to the 72,814 shares withheld for tax obligations

Shares held after transaction 1,363,338 shares Direct holdings of Class A Common Stock by CFO Andrew Casey following the transaction

RSUs included in holdings 814,949 RSUs Restricted stock units included in post-transaction share holdings

Key Terms

restricted stock units ("RSUs"), tax withholding obligations, net issuance

3 terms

restricted stock units ("RSUs") financial

"from the vesting of restricted stock units ("RSUs"), and does not represent"

Restricted stock units (RSUs) are a company promise to give an employee shares of stock (or cash equivalent) in the future, but only after certain conditions—usually staying with the company for a set time or hitting performance goals—are met. Investors watch RSUs because when they vest they increase the number of shares outstanding and can lead insiders to sell shares, affecting share price, company dilution and the true cost of employee pay.

tax withholding obligations financial

"withheld by the Issuer solely to satisfy tax withholding obligations in connection"

net issuance financial

"in connection with the net issuance of shares of the Issuer's Class A"

FAQ

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

What insider transaction did Amplitude (AMPL) disclose for CFO Andrew Casey?

Amplitude disclosed that CFO Andrew Casey had 72,814 shares of Class A Common Stock withheld on August 17, 2026 to satisfy tax withholding obligations from RSU vesting. The company states this does not represent a sale by him.

Was the Amplitude (AMPL) insider transaction a market sale of shares?

No. The filing states the 72,814 shares were withheld by Amplitude solely to satisfy tax withholding obligations related to RSU vesting and "does not represent a sale" by CFO Andrew Casey.

How many Amplitude (AMPL) shares does CFO Andrew Casey hold after the transaction?

After the reported tax-withholding transaction, CFO Andrew Casey directly holds 1,363,338 shares of Amplitude Class A Common Stock. This total includes 814,949 RSUs as indicated in the filing footnotes.

What was the reference price per share in the Amplitude (AMPL) Form 4 transaction?

The transaction used a reference price of $13.03 per share for the 72,814 shares withheld to cover tax obligations. This price is reported on a per-share basis in the filing data.

What triggered the tax-withholding share disposition reported for Amplitude (AMPL)?

The withholding of 72,814 shares was triggered by RSUs vesting and the net issuance of shares delivered to CFO Andrew Casey on August 15, 2026, requiring shares to be withheld to satisfy tax withholding obligations.

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

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Available on EDGAR 08/18/2026 - 05:15 PM Accepted by SEC EDGAR 08/18/2026 - 05:14 PM Learn about SEC filing dates

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
Estimated average burden
hours per response:			0.5

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.

(Street)

SAN FRANCISCO CALIFORNIA 94103

(City) (State) (Zip)

UNITED STATES

(Country)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/17/2026

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

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

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

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	08/17/2026		F(1)		72,814	D	$13.03	1,363,338(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 August 15, 2026, from the vesting of restricted stock units ("RSUs"), and does not represent a sale by the Reporting Person.

2. Includes 814,949 RSUs.

	/s/ Elizabeth Fisher, as attorney in fact for Andrew Casey	08/18/2026
	** 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.
* Form 4: SEC 1474 (03-26)