Couchbase Form 144 reveals $2.3M insider share sale plan

Rhea-AI Filing Summary

Couchbase, Inc. (NASDAQ: BASE) has filed a Form 144 indicating an insider’s intent to sell additional shares under Rule 144. The notice covers 122,355 common shares with an aggregate market value of $2,316,180.15. Morgan Stanley Smith Barney LLC is listed as the broker, and the shares are expected to be sold on or about 20 June 2025 on the NASDAQ exchange.

The shares to be sold were acquired on 16 June 2024 through RSU/PSU vesting from the issuer. Total shares outstanding are reported at 54,084,446, so the planned sale represents roughly 0.23 % of the current share count, limiting dilution concerns.

Recent insider activity:

• 10b5-1 sales for Matthew Cain on 17 June 2025: 7,833 shares for gross proceeds of $156,747.73.
• Direct sales by Matthew Cain on 16 June 2025: 36,102 shares for $687,226.84.

This totals 43,935 shares (≈0.08 % of shares outstanding) sold within the past week, in addition to the newly proposed amount.

The filing confirms that the seller attests to not possessing undisclosed material adverse information and, by referencing a 10b5-1 plan, signals pre-arranged, compliance-driven trading.

Positive

• Sale represents only ~0.23 % of outstanding shares, limiting dilution and supply impact.
• Transactions conducted under a 10b5-1 plan demonstrate adherence to SEC compliance and reduce information-asymmetry risk.

Negative

• Insider plans to sell 122,355 shares valued at $2.3 million, following sales of 43,935 shares earlier in the week, potentially pressuring share price.
• Continued insider selling may be interpreted as weak confidence in near-term performance, creating negative sentiment among investors.

Insights

Securities Analyst

TL;DR: Planned insider sale of 0.23 % shares; mildly negative for sentiment.

The Form 144 reveals an insider—identified through related 10b5-1 activity as Matthew Cain—intends to dispose of 122,355 shares worth about $2.3 million. Although the stake is small relative to BASE’s 54.1 million shares outstanding, the timing follows two sizable sales this week totaling 43,935 shares. Short-term supply could weigh on the stock and may be viewed as a lack-of-conviction signal. That said, use of a 10b5-1 plan and the sub-0.5 % magnitude mitigate dilution and governance risks. From a trading perspective, I label the disclosure modestly negative, mainly for sentiment, not fundamentals.

Corporate Governance Expert

TL;DR: Sale structured under 10b5-1; governance compliance intact, impact limited.

Rule 144 filings are routine, but investors examine them for red flags. The seller certifies no undisclosed adverse information and anchors transactions to a 10b5-1 framework, aligning with SEC best practices. The proposed sale equals 0.23 % of float, well under thresholds that typically raise control or dilution concerns. Prior sales were also disclosed, enhancing transparency. Consequently, from a governance lens the event is neutral—process adherence is sound, but continuous selling could influence perception.

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Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	122355	2316180.15	54084446	06/20/2025	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	06/16/2024	RSU/PSU	Issuer			122355	06/16/2024	N/A

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
10b5-1 Sales for MATTHEW CAIN 3155 Olsen Drive San Jose CA 95117	Common	06/17/2025	7833	156747.73
MATTHEW CAIN 3155 Olsen Drive San Jose CA 95117	Common	06/16/2025	36102	687226.84

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

How many BASE shares are being sold under this Form 144?

The filing covers 122,355 common shares of Couchbase, Inc.

What is the market value of the shares to be sold?

The aggregate market value is $2,316,180.15 according to the Form 144.

When is the planned sale date for the shares?

The approximate sale date specified is 20 June 2025.

What percentage of Couchbase’s outstanding shares does the sale represent?

The 122,355 shares equal roughly 0.23 % of the 54,084,446 shares outstanding.

Were there any recent insider sales prior to this notice?

Yes. In the past week, 43,935 shares were sold for total gross proceeds of $843,974.57.

Is the sale being made under a 10b5-1 trading plan?

The filing references 10b5-1 activity, indicating that a pre-arranged trading plan governs the transactions.