Gitlab hero border pattern left svg Gitlab hero border pattern right svg

Tax Treatment of Stock Options as Employee of GitLab UK Ltd

Equity Award

Stock Option Plan

When taxed?

Taxed at Exercise

What is taxed?

The "spread": Difference between the Offer Price and Exercise Price.

S341 Election

The UK provides a tax planning oppornity under a 'Section 431 Election'. This applies to UK option holders that exercise their stock options outside of a tender offer. By entering into the S431 dlection, option holders are electing to be subject to UK taxation at exercise of your stock options based on the fair market value of GitLab's shares without regard to any liquidity restrictions on the shares.

Why would option holders do this? The purpose of the S431 election is to confirm that the shares have been acquired for the unrestricted market value, and not at a discount because of the restrictions attached. When stock options are granted they have two different values according to UK tax law:

The UMV this will always be higher than the AMV. Provided that the option holder pays the full UMV for their shares as at the time of the exercise and makes an election within 14 days after the exercise, the option holder will not be required to pay an income tax charge on the future growth in the value of the shares when they are eventually sold.

The option holder will therefore not be subject to additional taxation if/when such restrictions are lifted (otherwise, taxation applies at exercise on the difference between the value of the restricted shares at exercise and the exercise price, and also if/when the restrictions are lifted). The Section 431 Election must be made no later than 14 days after the date the option holder exercises the stock options. Upon entering into the Section 431 Election, please return a copy of this form to

Subject to tax withholding?

GitLab is required to withhold income tax on the taxable amount and remit the withheld tax through the Pay-As-You-Earn (PAYE) system within 14 days after the end of the UK tax month during which the taxable event occurs (or within 17 days after the end of the tax month if paying electronically). The UK tax month runs from the 6th day of the month to the 5th day of the next month. For example, assuming the taxable event occurs during the UK tax month April 6 to May 5, the income tax withheld must be remitted to HM Revenue & Customs (HMRC) by May 19 (May 22 if paid electronically).

Social Insurance Contribution Withholding?

Yes (partially uncapped)

Employer Social Insurance Contribution Requirement?

Yes (partially uncapped)

Employee Maximum Combined Tax Withholding Rate


Social Insurance Contribution Withholding/Payment detail

GitLab must withhold employee social insurance contributions and remit both employee and employer social insurance contributions (National Insurance Contributions / “NIC”). If applicable, Apprenticeship Levy due through the PAYE system within 14 days after the end of the UK tax month of the exercise (or within 17 days after the end of the tax month if paying electronically).

Employee NIC Rate:

Employer NIC Rate:

Employer Compliance/Tax Reporting

Monthly Tax Reporting:

Annual Tax Reporting: