v3.25.4

Related Party Transactions - Narrative (Details) $ in Thousands	1 Months Ended
	Aug. 31, 2025 shares	May 31, 2025 USD ($) shares	Feb. 29, 2024 USD ($) shares	Feb. 28, 2022
Related Party Transaction [Line Items]
Sale of stock, number of shares issued (in shares)	43,700,000
Jeffrey Marrazzo \| Related Party \| Advisory Services Agreement
Related Party Transaction [Line Items]
Annual fee \| $			$ 50
Sale of stock, number of shares issued (in shares)			250,000
Fair value as of grant date \| $			$ 1,500
Jeffrey Marrazzo \| Related Party \| Executive Chair Agreement
Related Party Transaction [Line Items]
Annual fee \| $		$ 100
Sale of stock, number of shares issued (in shares)		1,000,000
Fair value as of grant date \| $		$ 1,000
Jeffrey Marrazzo \| Related Party \| Executive Chair Agreement \| Time-Based Stock Options
Related Party Transaction [Line Items]
Sale of stock, number of shares issued (in shares)		500,000
Minimum shares subject to vest		250,000
Outstanding percentage				0.50
Jeffrey Marrazzo \| Related Party \| Executive Chair Agreement \| Time-Based Stock Options \| Minimum
Related Party Transaction [Line Items]
Expiration period (in years)				6 months
Jeffrey Marrazzo \| Related Party \| Executive Chair Agreement \| Time-Based Stock Options \| Maximum
Related Party Transaction [Line Items]
Expiration period (in years)				1 year
Jeffrey Marrazzo \| Related Party \| Executive Chair Agreement \| Performance-Based Stock Options
Related Party Transaction [Line Items]
Sale of stock, number of shares issued (in shares)		200,000
Jeffrey Marrazzo \| Related Party \| Executive Chair Agreement \| Market Based Stock Options
Related Party Transaction [Line Items]
Sale of stock, number of shares issued (in shares)		300,000

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Share-Based Compensation Arrangement by Share-Based Payment Award,, Minimum Shares Subject to Vest

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- Definition

A fee charged for services from professionals such as doctors, lawyers and accountants. The term is often expanded to include other professions, for example, pharmacists charging to maintain a medicinal profile of a client or customer.

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The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

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Prime Medicine, Inc. 10-K