Desktop Metal, Inc. Annual report pursuant to Section 13 and 15(d)

STOCK BASED COMPENSATION - Stock Incentive Plan (Details)

STOCK BASED COMPENSATION - Stock Incentive Plan (Details) $ in Millions		1 Months Ended		12 Months Ended
	Jan. 01, 2021 shares	Dec. 31, 2020 shares	Jul. 31, 2020 USD ($) employee	Dec. 31, 2021 shares	Dec. 31, 2020 USD ($) shares	Dec. 31, 2019 shares	Dec. 31, 2015 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			1 year
Granted (in shares)				86,000
Number of employees affected by repricing \| employee			116
Expenses recognized \| $			$ 3.6
Consultant
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of shares \| $					$ 0.1
Employee
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)				0	8,450,799
Fair value of shares \| $					$ 29.8
Non-employee
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)				0
Non-employee \| Consultant
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)					12,212
2015 stock incentive plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards made under the plan							26,283,789
Expiration period							10 years
Vesting period							4 years
Make Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period						10 years
Vesting period						4 years
Options and warrants to be issued						232,304
Granted (in shares)						0
2020 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock available for future issuance		12,400,813			12,400,813
Percentage of stock outstanding		5.00%
Additional shares added to the plan	11,337,837