[Form 4] Amplitude, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Amplitude, Inc. (AMPL) director Erica Schultz filed a Form 4 reporting an option exercise and related sale on 10/15/2025. She exercised 10,000 Class A shares via a stock option at $4.19 per share (code M), then sold 10,000 Class A shares (code S) at a weighted average price of $10.1229, with trades ranging from $10.0200 to $10.2900. The sale was made under a Rule 10b5-1 trading plan adopted on March 12, 2025.

After these transactions, she beneficially owns 107,406 Class A shares directly and holds 69,500 derivative securities (stock options) directly. The reported option is early exercisable and follows a monthly vesting schedule that began on December 10, 2020.

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).

X

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^*

Schultz Erica

(Last) (First) (Middle)

C/O AMPLITUDE, INC.

201 THIRD ST., 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)

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

3. Date of Earliest Transaction (Month/Day/Year)
10/15/2025

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	10/15/2025		M		10,000	A	$4.19	117,406	D
Class A Common Stock	10/15/2025		S		10,000(1)	D	$10.1229(2)	107,406	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
Stock Option (Right to Buy)	$4.19	10/15/2025		M			10,000	(3)	12/15/2030	Class A Common Stock	10,000	$0.00	69,500	D

Explanation of Responses:

1. The sales reported were effected pursuant to a 10b5-1 trading plan adopted by the reporting person on March 12, 2025.

2. This transaction was executed in multiple trades at prices ranging from $10.0200 to $10.2900. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

3. The option is early exercisable. 1/48th of the shares subject to the option vest on each monthly anniversary measured from December 10, 2020 (the"Vesting Commencement Date"), such that 100% of the shares subject to the option will be fully vested on the fourth anniversary of the Vesting Commencement Date.

Remarks:

	/s/ Elizabeth Fisher, as attorney in fact for Schultz Erica	10/17/2025
	** 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 AMPL report on Form 4?

A director exercised 10,000 options at $4.19 and sold 10,000 Class A shares at a $10.1229 weighted average price on 10/15/2025.

Was the AMPL sale under a 10b5-1 plan?

Yes. The sale was effected under a Rule 10b5-1 trading plan adopted on March 12, 2025.

What is the AMPL director’s ownership after the trade?

She directly owns 107,406 Class A shares and holds 69,500 derivative securities (stock options) directly.

What prices were the AMPL shares sold at?

Multiple trades ranged from $10.0200 to $10.2900; the reported weighted average sale price was $10.1229.

What were the codes used in the AMPL Form 4?

Code M for option exercise at $4.19 and code S for sale of 10,000 shares.

What is the vesting detail of the exercised AMPL option?

The option is early exercisable; 1/48th vests monthly from December 10, 2020, reaching full vesting on the fourth anniversary.