Spire Global, Inc. Annual report [Section 13 and 15(d), not S-K Item 405]

Annual report [Section 13 and 15(d), not S-K Item 405]

Cover
- Document And Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Summary of Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Stock Based Compensation - Additional Information (Details)

v3.26.1

Stock Based Compensation - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Defined Benefit Plan Disclosure [Line Items]
Aggregate intrinsic value of options exercised in period	$ 1,200	$ 300
Proceeds from exercise of stock options	$ 1,827	$ 335
Weighted average grant-date fair value	$ 6.04	$ 5.15
Fair value of options vested	$ 400	$ 3,000
Employee Benefits and Share-Based Compensation	$ 18,700	$ 20,000
Number of Stock Options Granted	21,650	33,901
Restricted Stock Units (RSUs)
Defined Benefit Plan Disclosure [Line Items]
Unrecognized stock-based compensation expense	$ 20,400
Unrecognized stock-based compensation expense, weighted-average recognition period	2 years 3 months 10 days
Fair value of options vested	$ 14,800	$ 15,500
Employee share based compensation outstanding shares	197,604
Employee Benefits and Share-Based Compensation	$ 1,500
2021 Equity Incentive Plan [Member] \| Employee Stock Option
Defined Benefit Plan Disclosure [Line Items]
Share based compensation arrangement,Number of shares available for grant under the plan	751,436
Purchase Price of Common Stock, Percent	85.00%
2021 Equity Incentive Plan [Member] \| Restricted Stock Units (RSUs)
Defined Benefit Plan Disclosure [Line Items]
Share based compensation arrangement,Number of shares available for grant under the plan	608,178
2021 Equity Incentive Plan [Member] \| Common Class A
Defined Benefit Plan Disclosure [Line Items]
Percentage of Outstanding Stock Maximum	5.00%
2021 Equity Incentive Plan [Member] \| Common Class A \| Lesser [Member]
Defined Benefit Plan Disclosure [Line Items]
Number of shares issued under share-based payment arrangement	2,994,000

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