Amplitude CEO's spouse sells 107,136 shares

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

Spenser Skates's spouse sold 107,136 Class A shares on October 23, 2026, at a weighted-average price of $17.5194 per share. The sale was made under a Rule 10b5-1 trading plan adopted June 11, 2026, and the trades ranged from $17.4500 to $17.7000 per share.

The spouse’s sale was made under a Rule 10b5-1 plan adopted June 11, 2026, with trades priced from $17.4500 to $17.7000 per share.

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Rhea-AI Filing Summary

Amplitude, Inc. CEO and President Spenser Skates reported that his spouse converted 107,136 Class B shares into 107,136 Class A shares on October 23, 2026, then sold the Class A shares at a weighted-average price of $17.5194 per share. The sale was made under a Rule 10b5-1 trading plan adopted by his spouse on June 11, 2026; the trades ranged from $17.4500 to $17.7000 per share. After the conversion, the spouse held 200,021 Class B shares. Skates also directly held 5,342,146 Class B shares, 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 4 txns

Insider Skates Spenser

Role CEO and President

Sold 107,136 shs ($1.88M)

Approx. gross sale proceeds $1.88M

Type	Security	Shares	Price	Value
Conversion	Class B Common Stock ^F1	107,136	$0.00	$0.00
Conversion	Class A Common Stock ^F1	107,136	$0.00	$0.00
Sale	Class A Common Stock ^{F2, F3}	107,136	$17.5194	$1.88M
holding	Class B Common Stock ^F1	--	--	--

Holdings After Transaction: Class B Common Stock — 200,021 contracts (Indirect, By Spouse); Class A Common Stock — 0 shares (Indirect, By Spouse); Class B Common Stock — 5,342,146 contracts (Direct)

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 $17.7000. 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

Class B shares converted: 107,136 shares Class A shares acquired in conversion: 107,136 shares Class A shares sold: 107,136 shares +4 more

7 metrics

Class B shares converted 107,136 shares October 23, 2026

Class A shares acquired in conversion 107,136 shares October 23, 2026

Class A shares sold 107,136 shares October 23, 2026

Weighted-average sale price $17.5194 per share Sale on October 23, 2026

Sale-price range $17.4500–$17.7000 per share Multiple trades on October 23, 2026

Class B shares held by spouse after conversion 200,021 shares Reported after the October 23, 2026 conversion

Direct Class B shares held by Spenser Skates 5,342,146 shares Reported October 23, 2026

Key Terms

Rule 10b5-1 trading plan, weighted average sale price, Class B Common Stock, one-to-one basis

4 terms

Rule 10b5-1 trading plan regulatory

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

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

weighted average sale price financial

"price reported above reflects the weighted average sale price"

Class B Common Stock technical

"Class B Common Stock is convertible at any time"

A class B common stock is one of multiple types of a company’s ordinary shares that carries specific rights—often different voting power or dividend priority—compared with other classes. For investors it matters because those differences affect how much influence you have over company decisions, the income you might receive, and how freely the shares trade; think of it like owning a car with different keys: some keys let you start the engine and open the trunk, others only unlock the door.

one-to-one basis technical

"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 107,136 Class A shares on October 23, 2026, at a weighted-average price of $17.5194 per share. The sale was made under a Rule 10b5-1 trading plan adopted June 11, 2026, and the trades ranged from $17.4500 to $17.7000 per share.

What are the conversion terms for AMPL Class B shares?

Class B Common Stock is convertible at any time at the holder's option into Class A Common Stock on a one-to-one basis. The terms also provide for automatic conversion in specified circumstances, including certain transfers and specified changes in the employment or director status of Spenser Skates or the company's founders.

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

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Available on EDGAR 10/27/2026 - 04:45 PM EDT Accepted by SEC EDGAR 10/27/2026 - 04:45 PM EDT

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)
10/23/2026

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	10/23/2026		C		107,136	A	$0⁽¹⁾	107,136	I	By Spouse
Class A Common Stock	10/23/2026		S⁽²⁾		107,136	D	$17.5194⁽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⁾	10/23/2026		C⁽¹⁾			107,136	⁽¹⁾	⁽¹⁾	Class A Common Stock	107,136	$0	200,021	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 $17.7000. 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	10/27/2026
	** 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