GitLab's Sytse Sijbrandij trust proposes 2.12M-share sale

The notice lists an aggregate market value of $103,714,962.00 and an approximate sale date of September 24, 2026.

Rhea-AI Filing Summary

GitLab Inc. (GTLB) reports a proposed sale of 2,116,200 common shares for the account of Sytse Sijbrandij Revocable Trust; the associated person is identified as a director. The notice lists an aggregate market value of $103,714,962.00 and an approximate sale date of September 24, 2026. Morgan Stanley Smith Barney LLC is named in the securities information.

Key Figures

Common shares to be sold: 2,116,200 shares Aggregate market value: $103,714,962.00 Common shares outstanding: 165,500,000 shares +1 more

4 metrics

Common shares to be sold 2,116,200 shares Proposed sale for the account of Sytse Sijbrandij Revocable Trust

Aggregate market value $103,714,962.00 Securities information for the proposed sale

Common shares outstanding 165,500,000 shares Listed in the securities information

Approximate sale date September 24, 2026 Proposed sale

Key Terms

Rule 144, Founders Shares, aggregate market value

3 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144"

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Founders Shares financial

"Founders Shares"

Founders shares are a special block of a company’s stock originally given to the people who started the business; they often carry extra voting power or favorable terms compared with regular shares. For investors, these shares matter because they concentrate control and influence how future funding, ownership dilution, and decision-making will play out—think of founders shares as the steering wheel that can steer a company’s direction even as more passengers (investors) climb aboard.

aggregate market value financial

"aggregate market value"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many GitLab shares does the Sytse Sijbrandij Revocable Trust plan to sell?

The notice covers a proposed sale of 2,116,200 common shares, with an aggregate market value of $103,714,962.00. The approximate sale date is September 24, 2026.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/24/2026 - 04:40 PM Accepted by SEC EDGAR 09/24/2026 - 04:39 PM Learn about SEC filing dates

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	0001886022
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	GITLAB INC
SEC File Number	001-40895
Address of Issuer	268 BUSH STREET, #350 SAN FRANCISCO CALIFORNIA 94104
Phone	6504745175
Name of Person for Whose Account the Securities are To Be Sold	SYTSE SIJBRANDIJ REVOCABLE TRUST
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	Director

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	2116200	103714962.00	165500000	09/24/2026	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	08/28/2015	Founders Shares	Issuer			2116200	08/28/2015	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

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	09/24/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	06/25/2026
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	/s/ Syste Sijbrandij
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)