Matthew M. Cain - 16 Sep 2025 Form 4 Insider Report for Couchbase, Inc. (BASE)

Role: Chair, President, and CEO, Director
Signature: /s/ Margaret Chow, by Power of Attorney for Matthew M. Cain
Issuer symbol: BASE
Transactions as of: 16 Sep 2025
Net transactions value: -$870,761
Form type: 4
Filing time: 18 Sep 2025, 16:22:54 UTC
Previous filing: 03 Sep 2025
Next filing: 24 Sep 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Cain Matthew M	Chair, President, and CEO, Director	C/O COUCHBASE, INC., 3155 OLSEN DR., SUITE 150, SAN JOSE	/s/ Margaret Chow, by Power of Attorney for Matthew M. Cain	18 Sep 2025	0001642346

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	BASE	Common Stock	Tax liability	$870,761	-35,677	-4.3%	$24.41	794,061	16 Sep 2025	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of restricted stock units. The sale was to satisfy tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person.