Lynn M. Christensen - Sep 24, 2025 Form 4 Insider Report for Couchbase, Inc. (BASE)

Role: Director
Signature: /s/ Margaret Chow, by Power of Attorney for Lynn M. Christensen
Stock symbol: BASE
Transactions as of: Sep 24, 2025
Transactions value $: $0
Form type: 4
Date filed: 9/24/2025, 04:15 PM
Previous filing: Sep 17, 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Christensen Lynn M	Director	C/O COUCHBASE, INC., 3155 OLSEN DR., SUITE 150, SAN JOSE	/s/ Margaret Chow, by Power of Attorney for Lynn M. Christensen	2025-09-24	0001869744

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	BASE	Common Stock	Disposed to Issuer		-12.2K	-100%		0	Sep 24, 2025	Direct	F1, F2, F3

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	BASE	Stock Option (Right to Buy)	Disposed to Issuer		-44K	-100%		0	Sep 24, 2025	Common Stock	44K	$28.60	Direct	F1, F4

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

Lynn M. Christensen is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may continue.

Explanation of Responses:

Id	Content
F1	Pursuant to the Agreement and Plan of Merger (the "Merger Agreement"), dated June 20, 2025, by and among Couchbase, Inc. (the "Issuer"), Cascade Parent Inc. ("Parent") and Cascade Merger Sub Inc. ("Merger Sub"), Merger Sub merged with and into the Issuer (the "Merger"), with Issuer surviving the Merger and becoming a wholly owned subsidiary of Parent.
F2	At the effective time of the Merger (the "Effective Time"), these shares were automatically converted solely into the right to receive cash in an amount equal to $24.50 (without interest) per share (the "Per Share Price"), subject to the terms and conditions of the Merger Agreement.
F3	At the Effective Time, each outstanding restricted stock unit ("RSU") that was unvested was cancelled and converted solely into the contingent right to receive a cash award (without interest) equal to (i) the total number of shares of common stock subject to such unvested RSU award immediately prior to the Effective Time, multiplied by (ii) the Per Share Price, less applicable withholding taxes. Each converted cash award will continue to have, and will be subject to, the same vesting terms and conditions (including acceleration provisions upon a qualifying termination of employment (if any)) as applied to the corresponding unvested RSU award immediately prior to the Effective Time, except for administrative changes that are not adverse to the former holder of the unvested RSU award.
F4	At the Effective Time, this option to purchase shares of the Issuer's common stock was fully vested and had an exercise price per share that was greater than the Per Share Price and, pursuant to the terms of the Merger Agreement, at the Effective Time, was automatically cancelled for no consideration.