Velo3D, Inc. Quarterly report [Sections 13 or 15(d)]

Quarterly report [Sections 13 or 15(d)]

Equity Instruments - Additional Information (Details)

Equity Instruments - Additional Information (Details)							5 Months Ended	9 Months Ended
Equity Instruments - Additional Information (Details)	May 15, 2026 USD ($)	Apr. 27, 2026 USD ($) $ / shares shares	Apr. 03, 2026 USD ($) $ / shares shares	Dec. 23, 2025 USD ($)	Dec. 22, 2025 $ / shares shares	Sep. 29, 2021 Tranche shares	Sep. 30, 2026 USD ($) $ / shares shares	Sep. 30, 2026 USD ($) $ / shares shares	Sep. 29, 2026 shares	Jun. 11, 2026 $ / shares shares	Mar. 31, 2026 shares	Dec. 31, 2025 USD ($) $ / shares shares	Sep. 30, 2025 shares	Jun. 27, 2025 $ / shares
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Number of Warrants (in shares)							11,986	11,986				36,892
Warrant liabilities \| $							$ 81,000	$ 81,000				$ 109,000
Value of shares sold, may offer and sell up to \| $			$ 500,000,000
Common stock, shares authorized							500,000,000	500,000,000				500,000,000
Common stock, par value (in dollars per share) \| $ / shares							$ 0.00001	$ 0.00001				$ 0.00001		$ 0.00001
Preferred stock, shares issued							10,000,000	10,000,000
Preferred stock, par value \| $ / shares							$ 0.00001	$ 0.00001
Common stock, shares outstanding							32,260,870	32,260,870				24,607,630
Number of shares of common stock reserved for issuance (in shares)							6,676,886	6,676,886				191,062
Common Stock
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Common stock issued								2,246,823
ATM Sales Agreement
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Shares sold							2,200,000
Gross proceeds from issuance of common stock \| $							$ 59,400,000
Stock issuance cost \| $							2,000,000
Value of shares sold, may offer and sell up to \| $	$ 100,000,000
Gross proceeds from Offering \| $							$ 57,400,000
2021 Equity Incentive Plan
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Common stock, par value (in dollars per share) \| $ / shares			$ 0.00001
Number of shares of common stock reserved for issuance (in shares)			1,230,382							1,430,000
2021 Equity Incentive Plan \| Common Stock
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Number of shares of common stock reserved for issuance (in shares)											244,377
Amendment to 2021 Equity Incentive Plan
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Number of shares of common stock reserved for issuance (in shares)										2,860,000
Amendment to 2021 Equity Incentive Plan \| Common Stock
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Common stock, par value (in dollars per share) \| $ / shares										$ 0.00001
Number of shares of common stock reserved for issuance (in shares)							10,000,000	10,000,000		2,860,000
2021 Employee Stock Purchase Plan
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Common stock, par value (in dollars per share) \| $ / shares			$ 0.00001
Number of shares of common stock reserved for issuance (in shares)			246,076
Eligible Velo3D Equityholders
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Earnout period						5 years
Number of tranches \| Tranche						2
Eligible Velo3D Equityholders \| JAWS Spitfire
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Number of shares that the holders may receive (in shares)						20,722
Earnout shares issued									0
Contingent earnout liabilities, remaining obligation \| $							$ 0	$ 0
Contingent earnout liability outstanding \| $							$ 0	$ 0
Eligible Velo3D Equityholders \| Maximum \| JAWS Spitfire
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Number of shares that the holders may receive (in shares)						41,444
Private Placement \| Common Stock
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Sale of stock, price per share \| $ / shares					$ 8.25
Common stock, par value (in dollars per share) \| $ / shares					$ 0.00001
Common stock issued					3,636,363
2025 PIPE
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Gross proceeds from issuance of common stock \| $				$ 30,000,000
Stock issuance cost \| $				$ 2,000,000
April 2026 Registered Direct Offering
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Gross proceeds from issuance of common stock \| $		$ 50,000,000
Stock issuance cost \| $		$ 3,400,000
April 2026 Registered Direct Offering \| Common Stock
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Sale of stock, price per share \| $ / shares		$ 14
Common stock issued		3,571,428
Common stock warrants
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Number of Warrants (in shares)							11,986	11,986				36,892
Private Placement Warrants [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Number of Warrants (in shares)									8,477				0
Public Warrants [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Number of Warrants (in shares)									16,429			16,429	0