Amplitude (AMPL) CEO sees shares withheld for RSU taxes

Rhea-AI Filing Summary

Amplitude, Inc. (AMPL) disclosed that CEO, President and 10% owner Spenser Skates had 52,369 shares of Class A Common Stock withheld on August 17, 2026. These shares were withheld by the company solely to satisfy tax withholding obligations related to the net issuance of shares from vested restricted stock units and do not represent an open-market sale. Following this withholding, Skates holds 1,231,188 shares directly, including 1,102,599 RSUs.

Insider Trade Summary

Net Seller: 52,369 shares

Net Sell 1 txn

Insider Skates Spenser

Role CEO and President

Type	Security	Shares	Price	Value
Tax Withholding	Class A Common Stock F1, F2	52,369	$13.03	$682K

Holdings After Transaction: Class A Common Stock — 1,231,188 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 1,102,599 RSUs.

Key Figures

Shares withheld for taxes: 52,369 shares Withholding price per share: $13.03 per share Shares owned after transaction: 1,231,188 shares +1 more

4 metrics

Shares withheld for taxes 52,369 shares Class A Common Stock withheld on August 17, 2026 to satisfy tax withholding obligations

Withholding price per share $13.03 per share Value used for the 52,369 shares withheld for tax withholding obligations

Shares owned after transaction 1,231,188 shares Direct holdings of Class A Common Stock following the August 17, 2026 withholding

RSUs included in holdings 1,102,599 RSUs Restricted stock units included within the total post-transaction 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

What transaction did AMPL CEO Spenser Skates report on this Form 4?

Spenser Skates reported that 52,369 AMPL Class A shares were withheld on August 17, 2026 to cover tax withholding obligations from RSU vesting. The company notes this does not represent a sale by Skates.

Was the AMPL Form 4 transaction by Spenser Skates an open-market sale?

No. The filing states the 52,369 shares were withheld by Amplitude to satisfy tax withholding obligations tied to RSU vesting, and explicitly says the transaction does not represent a sale by the reporting person.

How many AMPL shares does Spenser Skates hold after this reported transaction?

After the withholding transaction, Skates directly holds 1,231,188 shares of Amplitude Class A Common Stock. This total specifically includes 1,102,599 RSUs, reflecting both vested and unvested equity-based compensation.

What was the price used for the AMPL shares withheld for taxes?

The 52,369 shares of Amplitude Class A Common Stock were valued at $13.03 per share for the withholding. This value is tied to satisfying tax withholding obligations arising from vested restricted stock units.

Did the AMPL Form 4 indicate use of a Rule 10b5-1 trading plan?

No. The Rule 10b5-1 checkbox is not marked as relying on a trading plan. The transaction instead reflects shares withheld for tax obligations in connection with RSU vesting, not discretionary market trading activity.

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

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/18/2026 - 05:18 PM Accepted by SEC EDGAR 08/18/2026 - 05:18 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^*

Skates Spenser

(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)

X	Director	X	10% Owner
X	Officer (give title below)		Other (specify below)
	CEO and President

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)		52,369	D	$13.03	1,231,188(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 1,102,599 RSUs.

	/s/ Elizabeth Fisher, as attorney in fact for Spenser Skates	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)