Liquidated Damages Payable (Tables)

6 Months Ended

Jun. 30, 2025

Liquidated Damages Payable [Abstract]

Summary of Liquidated Damages

Obligations with respect to the liquidated damages payable are summarized as follows:

	As of June 30, 2025
	Registration Rights Damages		Public Information Failure Damages		Accrued Interest		Balance
MDB Common Stock to be Issued (1)	$	15	$	—	$	—	$	15
Series H convertible preferred stock	566		574		863		2,003
Convertible debentures (2)	—		144		98		242
Series J convertible preferred stock (2)	152		152		183		487
Series K convertible preferred stock (2)	166		70		398		634
Total	$	899	$	940	$	1,542	$	3,381

	As of December 31, 2024
	Registration Rights Damages		Public Information Failure Damages		Accrued Interest		Balance
MDB Common Stock to be Issued (1)	$	15	$	—	$	—	$	15
Series H convertible preferred stock	566		574		796		1,936
Convertible debentures (2)	—		144		89		233
Series J convertible preferred stock (2)	152		152		165		469
Series K convertible preferred stock (2)	166		70		341		577
Total	$	899	$	940	$	1,391	$	3,230

(1)Consists of shares of common stock issuable to MDB Capital Group, LLC (“MDB”).

(2)Represents previously issued and converted debt or equity securities.