v3.26.1

Equity Incentive Plan - Restricted stock units (Details) - Restricted stock unit - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Equity Incentive Plan
Unrecognized compensation cost related to RSU	$ 0.1
Recognition period for unrecognized compensation cost	1 year 9 months 18 days
Restricted stock units, Shares
Beginning balance (in shares)	29,712	23,870
Granted (in shares)	18,450	23,090
Vested (in shares)	(17,154)	(10,518)
Cancelled/Forfeited (in shares)		(6,730)
Ending balance (in shares)	31,008	29,712
Weighted-average grant date fair value
Beginning balance, Weighted average grant date fair value	$ 7.83	$ 10
Granted, Weighted average grant date fair value	2.02	5.56
Vested, Weighted average grant date fair value	7.94	9.42
Cancelled/Forfeited, Weighted average grant date fair value		5.25
Ending balance, Weighted average grant date fair value	$ 4.31	$ 7.83
Executive officers
Restricted stock units, Shares
Granted (in shares)	10,090	16,820
Non employee directors
Restricted stock units, Shares
Granted (in shares)	8,360	6,270
Vesting On One Year Anniversary Of Grant Date \| Executive officers
Restricted stock units, Shares
Vesting period	1 year	1 year
Vesting On One Year Anniversary Of Grant Date \| Non employee directors
Restricted stock units, Shares
Vesting period	1 year	1 year
Vesting On Two Year Anniversary Of Grant Date \| Executive officers
Restricted stock units, Shares
Vesting period	2 years	2 years
Vesting On Three Year Anniversary Of Grant Date \| Executive officers
Restricted stock units, Shares
Vesting period	3 years	3 years

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Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Aprea Therapeutics, Inc. 10-K