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Notice of Proposed Sale · 144

GitLab Inc.

GTLBNASDAQEQUITYCurrent

Notice of Proposed Sale

Filed Oct 1, 2026Accepted Oct 1, 2026, 4:24 PM EDTFiling CIK 2087405Accession 0001950047-26-009951

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Notice of proposed sale. The proposed amounts below do not establish that a sale occurred.

Proposed-sale notice

Issuer: GITLAB INC.
Issuer CIK: 0001653482
SEC file number: 001-40895
Phone: 6504745175
Person for whose account securities are to be sold: SIMON MUNDY
Relationships to issuer: Officer
Street: 268 BUSH STREET, #350
City: SAN FRANCISCO
State / country code: CA
Postal code: 94104

Securities proposed for sale

Securities proposed for sale · 1 reported row
Security	Proposed units	Aggregate market value	Units outstanding	Approximate sale date	Exchange	Broker / market maker
Common	9,132	431,487.00	165,500,000	10/01/2026	NASDAQ	Morgan Stanley Smith Barney LLC Executive Financial Services

Broker / market maker — proposed row 1, entry 1

Name: Morgan Stanley Smith Barney LLC Executive Financial Services
Street: 1 New York Plaza
Street (continued): 8th Floor
City: New York
State / country code: NY
Postal code: 10004

Acquisition of securities to be sold

Acquisition of securities to be sold · 1 reported row
Security	Acquired	Nature of acquisition	Acquired from	Amount acquired	Gift transaction	Payment date	Nature of payment
Common	12/15/2025	Restricted Stock Units	Issuer	9,132	N	12/15/2025	N/A

Sales reported in the preceding three months

Sales reported in the preceding three months · 3 reported rows
Seller	Security	Sale date	Amount sold	Gross proceeds
10b5-1 Sales for SIMON MUNDY	Common	09/18/2026	2,934	146,679.17
SIMON MUNDY	Common	09/16/2026	4,656	227,091.28
10b5-1 Sales for SIMON MUNDY	Common	08/07/2026	8,725	331,550.00

Seller — prior-sale row 1, entry 1

Name: 10b5-1 Sales for SIMON MUNDY
Street: 268 BUSH STREET, #350
City: SAN FRANCISCO
State / country code: CA
Postal code: 94104

Seller — prior-sale row 2, entry 1

Name: SIMON MUNDY
Street: 268 BUSH STREET, #350
City: SAN FRANCISCO
State / country code: CA
Postal code: 94104

Seller — prior-sale row 3, entry 1

Name: 10b5-1 Sales for SIMON MUNDY
Street: 268 BUSH STREET, #350
City: SAN FRANCISCO
State / country code: CA
Postal code: 94104

Prior-sale reporting

Nothing to report for the preceding three months: N

Remarks

The securities to be sold were acquired upon the vesting of restricted stock units during the period of 12/15/2025 through 09/15/2026

Notice signature

Notice date: 10/01/2026
Signed: /s/ Simon Mundy
Plan adoption dates: 06/30/2026

Company context

Current securities

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