Spenser Skates Sells $1.88M of Amplitude Inc (AMPL) — SEC Form 4, Oct 27, 2026

Open-Market Net Sale · SEC Form 4

−$1,876,958

10b5-1 Plan (Partial)

Reporting Owner

Spenser Skates

CEO 10% Owner

TXN 2026-10-23 · FILED 2026-10-27

Equity Position 107K sh 107,136 → 107,136

Filing Lag 2 business days within 2-day SEC deadline

Form 4 · Statement of Changes in Beneficial Ownership

Amplitude Inc

AMPL CIK 0001866692

Reporting Owner

Name	Relationship
Spenser Skates CIK 0001882913	Director CEO 10% Owner

Spenser Skates at Amplitude Inc Full insider history

Bought (12 mo) —

Sold (12 mo) $10,289,846

More from this insider at Amplitude Inc

Non-Derivative Securities Transactions

Title	Date	Type	Shares	Price	Net Total	Post-Txn	Ownership
Class A Common StockF1	2026-10-23	C - Conversion	107,136 A	$0.00	—	107,136	Indirect By Spouse
Class A Common StockF2 F3	2026-10-23	S - Sale 10b5-1	107,136 D	$17.52	-$1,876,958	0	Indirect By Spouse

Derivative Securities Transactions

Title	Strike	Date	Type	Shares	Price	Expiration	Underlying	Ownership
Class B Common StockF1 F1 F1 F1		2026-10-23	C - Conversion	107,136 D	$0.00		107,136 Class A Common Stock	Indirect By Spouse

Derivative Holdings

Title	Amount	Exercise Price	Expiration
Class B Common StockF1 F1 F1 Class A Common Stock	5,342,146

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). Show more
F2: The sales reported were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person's spouse on June 11, 2026. Show more
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. Show more

Institutional Holders

Largest by reported value

5%+ Holders · 13D/G 5 filers

Latest Schedule 13D/G per filer; stakes the filer reported closed are left out.

Other insiders at Amplitude Inc

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