Amplitude CEO's spouse sells 48 shares on Nov. 9

Q: How many AMPL shares did Spenser Skates's spouse sell, and at what price?

Spenser Skates's spouse sold 48 Class A shares at a weighted average price of $17.4744 per share on November 9, 2026. The sale was made under a 10b5-1 trading plan adopted by the spouse on June 11, 2026; the reported trades ranged from $17.4500 to $17.5200.

Q: How did the AMPL Class B shares convert in the reported transaction?

The 48 Class B shares converted into 48 Class A shares on a one-to-one basis. Class B shares are convertible at any time at the holder's option.

Available on EDGAR 11/12/2026 - 04:25 PM EST Accepted by SEC EDGAR 11/12/2026 - 04:25 PM EST

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Rhea-AI Filing Summary

Amplitude, Inc. CEO and President Spenser Skates reported that his spouse converted 48 Class B shares into 48 Class A shares and sold the 48 Class A shares on November 9, 2026, at a weighted average price of $17.4744 per share. The sale was made under a 10b5-1 trading plan adopted by his spouse on June 11, 2026; the reported trades ranged from $17.4500 to $17.5200.

Following the conversion, his spouse held 192,060 Class B shares. Separately, Skates reported direct holdings of 5,342,146 Class B shares as of November 9, 2026; Class B shares are convertible into Class A shares on a one-to-one basis.

Insider Trade Summary 10b5-1

Exercise and sale activity reported; no spread calculated

Exercise and Sale 3 txns

Insider Skates Spenser

Role CEO and President

Sold 48 shs ($838.77)

Approx. gross sale proceeds $838.77

Share of Position Sold 100%

Type	Security	Shares	Price	Value
Conversion	Class B Common Stock ^F1	48	$0.00	$0.00
Conversion	Class A Common Stock ^F1	48	$0.00	$0.00
Sale	Class A Common Stock ^{F2, F3}	48	$17.4744	$838.77
Holding	Class B Common Stock ^F1	--	--	--

Holdings After Transaction: Class B Common Stock — 192,060 shares (Indirect, By Spouse); Class A Common Stock — 0 shares (Indirect, By Spouse); Class B Common Stock — 5,342,146 shares (Direct)

Holdings Before and After: Class B Common Stock, 192,108 to 192,060 shares (Indirect, By Spouse); Class A Common Stock, 0 to 0 shares (Indirect, By Spouse)

Footnotes (3)

F1. The Class B Common Stock is convertible at any time at the option of the holder into the Issuer's Class A Common Stock on a one-to-one basis. The Class B Common Stock will convert automatically into shares of the Issuer's Class A Common Stock on a one-to-one basis upon the earlier of (a) any transfer of the Class B Common Stock by the holder, whether or not for value, subject to certain exceptions, (b) the death or incapacity of Mr. Skates, (c) the date that is six months following the date on which Mr. Skates is no longer an employee or director of the Issuer (unless Mr. Skates has rejoined the Issuer during such six-month period) or (d) the date that is six months following the date on which none of the Issuer's founders is an employee or director of the Issuer (unless a founder has rejoined the Issuer during such six-month period).
F2. The sales reported were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person's spouse on June 11, 2026.
F3. This transaction was executed in multiple trades at prices ranging from $17.4500 to $17.5200. 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.

Key Figures

Weighted average sale price: $17.4744 per share Class A shares sold: 48 shares Spouse's Class B shares after conversion: 192,060 shares +1 more

4 metrics

Weighted average sale price $17.4744 per share 48 Class A shares sold on November 9, 2026

Class A shares sold 48 shares By the reporting person's spouse on November 9, 2026

Spouse's Class B shares after conversion 192,060 shares Reported following the November 9, 2026 conversion

Direct Class B holdings 5,342,146 shares Reported by Spenser Skates as of November 9, 2026

Key Terms

10b5-1 trading plan, weighted average sale price, one-to-one basis

3 terms

10b5-1 trading plan regulatory

"sales were effected pursuant to a 10b5-1 trading plan"

A 10b5-1 trading plan is a pre-arranged strategy that allows company insiders to buy or sell company stock at set times, regardless of their current knowledge about the company's situation. It acts like a scheduled appointment for trading, helping prevent the appearance of impropriety or insider trading. This plan provides a way for insiders to sell or buy shares in a controlled, transparent manner, offering reassurance to investors about fair trading practices.

weighted average sale price financial

"the price reported above reflects the weighted average sale price"

one-to-one basis technical

"into the Issuer's Class A Common Stock on a one-to-one basis"

FAQ

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

How many AMPL shares did Spenser Skates's spouse sell, and at what price?

Spenser Skates's spouse sold 48 Class A shares at a weighted average price of $17.4744 per share on November 9, 2026. The sale was made under a 10b5-1 trading plan adopted by the spouse on June 11, 2026; the reported trades ranged from $17.4500 to $17.5200.

How did the AMPL Class B shares convert in the reported transaction?

The 48 Class B shares converted into 48 Class A shares on a one-to-one basis. Class B shares are convertible at any time at the holder's option.

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

Form 4 Insider Transactions: What Each Field Means →

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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.

201 THIRD STREET, SUITE 200

(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)
11/09/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Class A Common Stock	11/09/2026		C		48	A	$0⁽¹⁾	48	I	By Spouse
Class A Common Stock	11/09/2026		S⁽²⁾		48	D	$17.4744⁽³⁾	0	I	By Spouse

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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Class B Common Stock	⁽¹⁾	11/09/2026		C⁽¹⁾			48	⁽¹⁾	⁽¹⁾	Class A Common Stock	48	$0	192,060	I	By Spouse
Class B Common Stock	⁽¹⁾							⁽¹⁾	⁽¹⁾	Class A Common Stock	5,342,146		5,342,146	D

Explanation of Responses:

1. The Class B Common Stock is convertible at any time at the option of the holder into the Issuer's Class A Common Stock on a one-to-one basis. The Class B Common Stock will convert automatically into shares of the Issuer's Class A Common Stock on a one-to-one basis upon the earlier of (a) any transfer of the Class B Common Stock by the holder, whether or not for value, subject to certain exceptions, (b) the death or incapacity of Mr. Skates, (c) the date that is six months following the date on which Mr. Skates is no longer an employee or director of the Issuer (unless Mr. Skates has rejoined the Issuer during such six-month period) or (d) the date that is six months following the date on which none of the Issuer's founders is an employee or director of the Issuer (unless a founder has rejoined the Issuer during such six-month period).

2. The sales reported were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person's spouse on June 11, 2026.

3. This transaction was executed in multiple trades at prices ranging from $17.4500 to $17.5200. 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.

	/s/ Elizabeth Fisher, as attorney in fact for Spenser Skates	11/11/2026
	** 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)

Source: View Original Filing on SEC EDGAR