Spire Global, Inc. Quarterly report [Sections 13 or 15(d)]

Quarterly report [Sections 13 or 15(d)]

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 (Detail)

v3.25.3

Stock Based Compensation - Additional Information (Detail) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
	Jan. 01, 2025	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Defined Benefit Plan Disclosure [Line Items]
Proceeds from exercise of stock options		$ 954	$ 0	$ 1,824	$ 269
Aggregate intrinsic value of options exercised in period		696	0	1,189	189
Fair value of options vested		$ 29	$ 749	$ 400	$ 2,435
Number of options outstanding, Granted		21,650	33,901	21,650	33,901
Incremental stock based compensation expense		$ 3,830	$ 4,959	$ 14,957	$ 13,382
Restricted Stock Units (RSUs)
Defined Benefit Plan Disclosure [Line Items]
Incremental stock based compensation expense		0		1,517
RSUs and PSUs
Defined Benefit Plan Disclosure [Line Items]
Fair value of options vested		2,984	$ 1,471	11,889	$ 5,814
Unrecognized stock-based compensation expense		$ 20,655		$ 20,655
Unrecognized stock-based compensation expense, weighted-average recognition period				2 years 3 months 18 days
2021 Equity Incentive Plan
Defined Benefit Plan Disclosure [Line Items]
Number of shares issued under share-based payment arrangement	1,285,558			1,095,506
2021 ESPP
Defined Benefit Plan Disclosure [Line Items]
Number of shares issued under share-based payment arrangement	257,111			803,675

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