Amplitude (AMPL) director sells 7,453 shares under 10b5-1 tax plan

Rhea-AI Filing Summary

Amplitude, Inc. director Catherine Wong reported an open-market sale of 7,453 shares of Class A Common Stock on June 12, 2026 at a weighted average price of $6.7865 per share. The shares were sold to satisfy tax obligations related to vesting RSUs under a pre-arranged Rule 10b5-1 trading plan. Following this transaction, she directly owns 111,462 shares, including 24,857 RSUs.

Insider Trade Summary 10b5-1

Net Seller: 7,453 shares ($50,580)

Net Sell 1 txn

Insider Wong Catherine

Role null

Sold 7,453 shs ($51K)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock	7,453	$6.7865	$51K

Holdings After Transaction: Class A Common Stock — 111,462 shares (Direct, null)

Footnotes (1)

1. Shares sold to satisfy tax obligations in connection with the vesting of restricted stock units ("RSUs"), pursuant to a 10b5-1 trading plan adopted by the Reporting Person on December 11, 2025. This transaction was executed in multiple trades in prices ranging from $6.5800 to $6.9400, inclusive. The price reported in Column 4 above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote. Includes 24,857 RSUs.

Key Figures

Shares sold: 7,453 shares Weighted average sale price: $6.7865 per share Post-transaction holdings: 111,462 shares +2 more

5 metrics

Shares sold 7,453 shares Open-market sale on June 12, 2026

Weighted average sale price $6.7865 per share Class A Common Stock sale

Post-transaction holdings 111,462 shares Direct ownership after sale

Included RSUs 24,857 RSUs Part of post-transaction holdings

Trade price range $6.58–$6.94 per share Multiple executions on June 12, 2026

Key Terms

Rule 10b5-1 trading plan, restricted stock units ("RSUs"), weighted average sale price, open-market sale

4 terms

Rule 10b5-1 trading plan regulatory

"pursuant to a 10b5-1 trading plan adopted by the Reporting Person on December 11, 2025"

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.

restricted stock units ("RSUs") financial

"Shares sold to satisfy tax obligations in connection with the vesting of restricted stock units ("RSUs")"

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.

weighted average sale price financial

"The price reported in Column 4 above reflects the weighted average sale price"

open-market sale financial

"transaction_action": "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

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Form 4 Insider Transactions: What Each Field Means →

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^*

Wong Catherine

(Last) (First) (Middle)

C/O AMPLITUDE,INC.

201 THIRD ST., 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		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/12/2026

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	06/12/2026		S(1)		7,453	D	$6.7865(2)	111,462(3)	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. Shares sold to satisfy tax obligations in connection with the vesting of restricted stock units ("RSUs"), pursuant to a 10b5-1 trading plan adopted by the Reporting Person on December 11, 2025.

2. This transaction was executed in multiple trades in prices ranging from $6.5800 to $6.9400, inclusive. The price reported in Column 4 above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote.

3. Includes 24,857 RSUs.

Remarks:

	/s/ Fisher, Elizabeth, as attorney in fact for Catherine Wong	06/15/2026
	** 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)

FAQ

What insider transaction did Amplitude (AMPL) disclose for Catherine Wong?

Amplitude reported that director Catherine Wong sold 7,453 shares of Class A Common Stock. The sale was an open-market transaction executed on June 12, 2026, primarily to cover tax obligations arising from vesting restricted stock units.

At what price did Catherine Wong sell Amplitude (AMPL) shares?

Catherine Wong sold 7,453 Amplitude shares at a weighted average price of $6.7865. Individual trades occurred in multiple executions within a price range from $6.58 to $6.94 per share, according to the disclosure footnote.

Why did Catherine Wong sell Amplitude (AMPL) stock in this Form 4?

The shares were sold to satisfy tax obligations tied to vesting restricted stock units. The filing states the sale occurred under a Rule 10b5-1 trading plan that Wong adopted on December 11, 2025, indicating the transactions were pre-arranged rather than discretionary.

How many Amplitude (AMPL) shares does Catherine Wong hold after the sale?

After the reported sale, Catherine Wong directly holds 111,462 Amplitude shares. This total includes 24,857 restricted stock units, which represent share-based compensation that will settle into shares as vesting conditions are met over time.

Was Catherine Wong’s Amplitude (AMPL) stock sale part of a Rule 10b5-1 plan?

Yes. The filing specifies that the sale to cover tax obligations was executed pursuant to a Rule 10b5-1 trading plan. That plan was adopted on December 11, 2025, meaning the trade timing was pre-scheduled rather than based on short-term market developments.