# EDGAR Filing Document

**Accession Number:** 0001224922
**File Stem:** 0001224922-25-000010
**Filing Date:** 2025-9
**Character Count:** 12359
**Document Hash:** 50a15c91c264acc2c264d42fb68b5bdd
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001224922-25-000010.hdr.sgml**: 20250924

**ACCESSION NUMBER**: 0001224922-25-000010

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20250924

**FILED AS OF DATE**: 20250924

**DATE AS OF CHANGE**: 20250924

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** EFRUSY KEVIN
- **CENTRAL INDEX KEY:** 0001224922

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-40601
- **FILM NUMBER:** 251338412

**MAIL ADDRESS:**
- **STREET 1:** 428 UNIVERSITY AVE
- **CITY:** PALO ALTO
- **STATE:** CA
- **ZIP:** 94031
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Couchbase, Inc.
- **CENTRAL INDEX KEY:** 0001845022
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-PREPACKAGED SOFTWARE [7372]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 263576987
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 0131

**BUSINESS ADDRESS:**
- **STREET 1:** 3155 OLSEN DRIVE
- **CITY:** SAN JOSE
- **STATE:** CA
- **ZIP:** 95117
- **BUSINESS PHONE:** 6504177500

**MAIL ADDRESS:**
- **STREET 1:** 3155 OLSEN DRIVE
- **CITY:** SAN JOSE
- **STATE:** CA
- **ZIP:** 95117

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[x] 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**<sup>*</sup><br>EFRUSY KEVIN<br><sub>(Last) (First) (Middle)</sub><br>C/O COUCHBASE, INC.<br>3155 OLSEN DR., SUITE 150<br><sub>(Street)</sub><br>SAN JOSE, CA 95117<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2025-09-24 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director [ ] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Couchbase, Inc. [ BASE ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Stock | 2025-09-24 |  | D<sup>(1)</sup> |  | 38704 | D | <sup>(2)(3)</sup> | 0 | D |  |
| Common Stock | 2025-09-24 |  | D<sup>(1)</sup> |  | 548874<sup>(4)</sup> | D | <sup>(2)</sup> | 0 | I | Accel X L.P.<sup>(5)</sup> |
| Common Stock | 2025-09-24 |  | D<sup>(1)</sup> |  | 146484 | D | <sup>(2)</sup> | 0 | I | Accel Growth Fund II Strategic Partners L.P.<sup>(5)</sup> |
| Common Stock | 2025-09-24 |  | D<sup>(1)</sup> |  | 217110 | D | <sup>(2)</sup> | 0 | I | Accel Growth Fund Investors 2013 L.L.C.<sup>(5)</sup> |
| Common Stock | 2025-09-24 |  | D<sup>(1)</sup> |  | 41585<sup>(6)</sup> | D | <sup>(2)</sup> | 0 | I | Accel X Strategic Partners L.P.<sup>(5)</sup> |
| Common Stock | 2025-09-24 |  | D<sup>(1)</sup> |  | 2022312 | D | <sup>(2)</sup> | 0 | I | Accel Growth Fund II L.P.<sup>(5)</sup> |
| Common Stock | 2025-09-24 |  | D<sup>(1)</sup> |  | 57390<sup>(7)</sup> | D | <sup>(2)</sup> | 0 | I | Accel Investors 2008 L.L.C.<sup>(5)</sup> |
| Common Stock | 2025-09-24 |  | D<sup>(1)</sup> |  | 560<sup>(8)</sup> | D | <sup>(2)</sup> | 0 | I | Accel X Associates L.L.C.<sup>(5)</sup> |
| Common Stock | 2025-09-24 |  | D<sup>(1)</sup> |  | 35592<sup>(9)</sup> | D | <sup>(2)</sup> | 0 | I | The Efrusy Family Trust u/a/d 10/21/2005<sup>(10)</sup> |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

---

### Footnotes:

(1) 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.

(2) At the effective time of the Merger (the "Effective Time"), these shares, including awards of restricted stock units that vested previously but settlement for which had been deferred under our non-employee director restricted stock unit ("RSU") deferral program (as applicable), 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.

(3) At the Effective Time, each outstanding 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.

(4) Reflects distributions of (i) 423,600 shares of the Issuer's common stock, (ii) 423,600 shares of the Issuer's common stock, and (iii) 550,680 shares of the Issuer's common stock, in each case distributed by Accel X L.P. to its limited partners and general partner, which shares were further distributed, representing each such partner's pro rata interest in such shares distributed, for no consideration on December 18, 2023, January 8, 2024, and March 7, 2024, respectively, in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

(5) Accel X Associates L.L.C. ("A10A") is the General Partner of both Accel X L.P. and Accel X Strategic Partners L.P., and has the sole voting and investment power. Andrew G. Braccia, Kevin J. Efrusy, Sameer K. Gandhi, Ping Li, and Richard P. Wong are the Managing Members of A10A and Accel Investors 2008 L.L.C., and therefore share the voting and investment powers. Accel Growth Fund II Associates L.L.C., or AGF2A, is the General Partner of both Accel Growth Fund II L.P. and Accel Growth Fund II Strategic Partners L.P., and has the sole voting and investment power. Andrew G. Braccia, Sameer K. Gandhi, Ping Li, Ryan J. Sweeney and Richard P. Wong are the Managing Members of AGF2A and Accel Growth Fund Investors 2013 L.L.C. and share such powers. Each person disclaims beneficial ownership except to the extent of their pecuniary interest therein. The address for all Accel entities listed above is 500 University Avenue, Palo Alto, California 94301.

(6) Reflects distributions of (i) 32,100 shares of the Issuer's common stock, (ii) 32,100 shares of the Issuer's common stock, and (iii) 41,730 shares of the Issuer's common stock, in each case distributed by Accel X Strategic Partners L.P. to its limited partners and general partner, which shares were further distributed, representing each such partner's pro rata interest in such shares distributed, for no consideration on December 18, 2023, January 8, 2024, and March 7, 2024, respectively, in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

(7) Reflects distributions of (i) 44,300 shares of the Issuer's common stock, (ii) 44,300 shares of the Issuer's common stock, and (iii) 57,590 shares of the Issuer's common stock, in each case distributed by Accel Investors 2008 L.L.C. to its limited partners and general partner, which shares were further distributed, representing each such partner's pro rata interest in such shares distributed, for no consideration on December 18, 2023, January 8, 2024, and March 7, 2024, respectively, in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

(8) Reflects distribution of (i) 476 shares of the Issuer's common stock by Accel X L.P. and (ii) 84 shares of the Issuer's common stock by Accel X Strategic Partners L.P., in each case distributed to A10A for no consideration on March 7, 2024, in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

(9) Reflects distributions of (i) 7,521 shares of the Issuer's common stock, (ii) 6,396 shares of the Issuer's common stock, and (iii) 210 shares of the Issuer's common stock, in each case distributed to The Efrusy Family Trust u/a/d 10/21/2005 (the "Trust"), of which Mr. Efrusy is a Trustee, for no consideration on December 18, 2023, January 8, 2024, and March 7, 2024, respectively, in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

(10) Shares held by the Trust. The Reporting Person disclaims beneficial ownership over the securities reported herein except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

**Signature:** /s/ Margaret Chow, by Power of Attorney for Kevin Efrusy  
**Date:** 2025-09-24

### Remarks:

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.**