Debt (Related Party)

9 Months Ended

12 Months Ended

Sep. 30, 2025

Dec. 31, 2024

Debt (Related Party) [Abstract]

Debt (Related Party)

8. Debt (Related Party)

February 2024 Term Loan

In February 2024, the Company issued a promissory note (the “February 2024 Term Loan”) with a minimum principal amount of $5,000 and up to $10,000 to GAT Funding, LLC (“GAT”), an entity controlled by Glen A. Taylor, then a member of the Company’s board of directors and a controlling stockholder of the Company. At closing, the Company drew $5,000 from the February 2024 Term Loan. Provided that no event of default had occurred and the Company submitted a request for funding certifying that the Company had less than $7,500 of net tangible assets, the Company had the ability to draw the remaining $5,000 in $2,500 tranches, as long as each request was made prior to February 1, 2025. In both May 2024 and July 2024, the Company requested and received additional advances of $2,500 under the February 2024 Term Loan. The balance outstanding on the February 2024 Term Loan was $10,369, net of discount, at the time the debt was extinguished as discussed below.

The February 2024 Term Loan had a five-year term and an original maturity date of February 27, 2029. The principal amount drawn bore interest at a rate of 8.0% per annum and was to be paid quarterly in arrears after the second anniversary of the February 2024 Term Loan. Interest accrued and was not payable for the first two years of the term and was compounded and added to the principal balance of the February 2024 Term Loan both on the first and second anniversary of the February 2024 Term Loan. The Company could prepay the accrued interest and principal of the February 2024 Term Loan without penalty, with 10 days’ notice.

August 2024 Term Loan

In August 2024, the Company issued an additional promissory note (the “August 2024 Term Loan”) with a principal amount of up to $10,000 to GAT. At closing, the Company drew $5,000 from the August 2024 Term Loan. Provided that no event of default had occurred and the Company submitted a request for funding certifying that the Company had less than $7,500 of net tangible assets, the Company had the ability to draw the remaining $5,000 in $2,500 tranches, as long as each request is made prior to August 1, 2025. In December 2024, the Company requested and received an additional advance of $5,000 under the August 2024 Term Loan. The balance outstanding on the August 2024 Term Loan was $9,334, net of discount, at the time the debt was extinguished as discussed below.

The August 2024 Term Loan had a five-year term and an original maturity date of August 27, 2029. The principal amount drawn bore interest at a rate of 8.0% per annum and was to be paid quarterly in arrears after the second anniversary of the August 2024 Term Loan. Interest accrued and was not payable for the first two years of the term and was compounded and added to the principal balance of the August 2024 Term Loan both on the first and second anniversary of the August 2024 Term Loan. The Company could prepay the accrued interest and principal of the August 2024 Term Loan without penalty, with 10 days’ notice.

As a commitment fee, the Company was required to issue warrants to purchase 250,000 shares of its Common Stock for each $2,500 of principal funded under the February 2024 Term Loan and August 2024 Term Loan. The warrants have an exercise price equal to the closing price on the date of funding of the applicable tranche.

Warrants - February 2024 Term Loan and August 2024 Term Loan

At closing of the initial funding of the February 2024 Term Loan, the Company issued warrants to purchase 500,000 shares of Common Stock at an exercise price of $1.24 per share. These warrants expire on February 27, 2026. Upon the second draw made in May 2024, the Company issued warrants to purchase 250,000 shares of Common Stock at an exercise price of $3.04 per share. These warrants expire on May 28, 2026. Upon the third draw made in July 2024, the Company issued warrants to purchase 250,000 shares of Common Stock at an exercise price of $2.25 per share. At the time of their initial issuance, these warrants had a contractual expiration date of July 23, 2026. The expiration dates have been amended as discussed below.

At closing of the initial funding of the August 2024 Term Loan, the Company issued warrants to purchase 500,000 shares of Common Stock at an exercise price of $2.97 per share. These warrants expire on August 27, 2026. Upon the second draw made in December 2024, the Company issued warrants to purchase 500,000 shares of Common Stock at an exercise price of $2.20 per share. At the time of their initial issuances, these warrants had a contractual expiration date of December 11, 2026. The expiration dates have been amended as discussed below.

March 2025 Term Loan

In March 2025, the Company issued a promissory note (the “March 2025 Term Loan” and, collectively with the February 2024 Term Loan and August 2024 Term Loan, the “Term Loans”) with a minimum principal amount of $5,000 and up to $10,000 to GAT. At closing, the Company drew down $5,000 from the March 2025 Term Loan. Provided that no event of default has occurred and the Company submits a request for funding certifying that the Company has less than $7,500 of net tangible assets, the Company had the ability to draw the remaining $5,000 in $2,500 tranches, as long as each request is made prior to March 2026. On June 26, 2025, the Company requested and received an additional advance of $5,000 under the March 2025 Term Loan. The balance outstanding on the March 2025 Term Loan was $8,523, net of discount, at the time the debt was extinguished as discussed below.

The March 2025 Term Loan had a five-year term and an original maturity date of March 6, 2030. The principal amount drawn bore interest at a rate of 8.0% per annum and was to be paid quarterly in arrears after the second anniversary of the March 2025 Term Loan. Interest accrued and was not payable for the first two years of the term and was compounded and added to the principal balance of the March 2025 Term Loan both on the first and second anniversary of the March 2025 Term Loan. The Company could prepay the accrued interest and principal of the March 2025 Term Loan without penalty, with 10 days’ notice.

As a commitment fee, the Company was required to issue warrants to purchase 375,000 shares of its Common Stock for each $2,500 of principal funded under the March 2025 Term Loan. The warrants have an exercise price equal to the closing price on the date of funding of the applicable tranche. At closing of the initial funding of the March 2025 Term Loan, the Company issued warrants to purchase 750,000 shares of Common Stock at an exercise price of $1.35 per share. At the time of their initial issuance, these warrants had a contractual expiration date of March 11, 2027. The expiration date has been amended as discussed below.

Upon the second draw made in June 2025, the Company issued warrants to purchase 750,000 shares of Common Stock at an exercise price of $1.48. At the time of their initial issuances, these warrants had a contractual expiration date of June 26, 2027. The expiration date has been amended as discussed below. The warrants issued in conjunction with the Term Loans are referred to as “Term Loan Warrants”.

The Term Loans were accounted for as a conventional debt instrument and are accounted for in accordance with Accounting Standards Update 2020-06, Debt – Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging – Contracts in Entity’s Own Equity (Subtopic 815-40).

As a result of the issuance of the warrants with the February 2024, May 2024 and July 2024 closings of the February 2024 Term Loan, which met the criteria for equity classification under applicable U.S. GAAP, the Company recorded the fair value of the warrants on the issuance date in the amount of $179, $197, and $210, respectively, as a debt discount and additional paid-in capital on the unaudited condensed consolidated balance sheets. Subsequently, these debt discounts were being recorded to interest expense, related party over the term of the February 2024 Term Loan.

As a result of the issuance of the warrants with the August 2024 and December 2024 closings of the August 2024 Term Loan, which met the criteria for equity classification under applicable U.S. GAAP, the Company recorded the fair value of the warrants on the issuance date in the amount of $489 and $321, respectively, as a debt discount and additional paid-in capital on the unaudited condensed consolidated balance sheet. Subsequently, these debt discounts were being recorded to interest expense, related party over the term of the August 2024 Term Loan.

As a result of the issuance of the warrants with the March 2025 and June 2025 closings of the March 2025 Term Loan, which met the criteria for equity classification under applicable U.S. GAAP, the Company recorded the fair value of the warrants on the issuance date in the amount of $688 and $882, respectively, as a debt discount and additional paid-in capital on the unaudited condensed consolidated balance sheet. Subsequently, these debt discounts were recorded to interest expense, related party over the term of the March 2025 Term Loan.

The Company uses the Black-Scholes option model to estimate the fair value of warrants issued in connection with the Term Loans. In applying the Black-Scholes option model, the Company used the following assumptions in the valuation of warrants issued during the nine months ended September 30, 2025 and 2024:

	Nine Months Ended September 30,
	2025		2024
Risk-free rate		3.7% - 3.9%		4.6% - 4.9%
Expected dividend yield		0%		0%
Expected term (years)		2.0		2.0
Expected volatility		136.0% - 144.0%		42.4% - 45.8%
Stock price and warrant exercise price		$1.35 - $1.48		$1.24 - $3.04

The Company uses a present value calculation of future cash flows to estimate the fair value of the Term Loans at the date of issuance. The Company used the following inputs in the valuation of Term Loans issued during the nine months ended September 30, 2025 and 2024:

	Nine Months Ended September 30,
	2025			2024
Principal	$	10,000		$	12,500
Coupon rate		8.0	%		8.0	%
Issuance date		3/11/2025 - 6/26/2025			3/4/2024 – 8/27/2024
Interest type		Fixed rate			Fixed rate
Payment frequency		Maturity			Maturity
Interest day count		Actual / 365			Actual / 365
Maturity		3/6/2030			2/27/2029 – 8/27/2029
Market rate (1)		11.7% - 16.4%			7.8% - 10.6%

⁽¹⁾ Discounted using the interpolated S&P CCC yield curve commensurate with the remaining term of the note.

During the nine months ended September 30, 2025 and 2024, the Company recognized $1,590 and $432, respectively, of interest expense in relation to the Term Loans. Included within this interest expense total, the Company recognized $282 and $53 of debt discount amortization during the nine months ended September 30, 2025 and 2024, respectively. As of December 31, 2024, accrued interest of $703 is recorded in accrued interest (related party) and unamortized debt discount of $1,284 is recorded within term loans payable (related party) on the Company’s unaudited condensed consolidated balance sheets.

Debt Extinguishment and Warrant Extension

On August 25, 2025, the Company entered into a satisfaction of promissory notes agreement (the “Satisfaction Agreement”) with GAT. Pursuant to the stated terms of the Satisfaction Agreement, GAT agreed to forgive all outstanding principal and accrued interest on the Term Loans in exchange for a $100 payment from the Company.

On September 4, 2025, the Company entered into a voting and warrant extension agreement (the “Voting and Extension Agreement”) with Glen Taylor, GAT, and another affiliated entity. Pursuant to the Voting and Extension Agreement, the Company agreed to extend the expiration date of the Term Loan Warrants to December 31, 2028. Prior to the extension, the Term Loan Warrants had expiration dates ranging from February 27, 2026 to June 26, 2027. In addition, Glen Taylor, GAT, and another affiliated entity agreed to vote in favor of any proposal that is submitted by the Company for approval by its stockholders under Nasdaq Listing Rule 5635 relating to stockholder approval of certain issuances of securities, provided that the proposal is unanimously approved and recommended by the Board of Directors of the Company. The voting obligations are in effect through December 31, 2028 and are binding on any transferees of the Common Stock that is currently held by Glen Taylor, GAT or the other affiliated entity. The Voting and Extension Agreement also granted registration rights to Glen Taylor, GAT, or the other affiliated entity upon request on or after March 31, 2026.

The Satisfaction Agreement and the Voting and Extension Agreement were considered as a single transaction for accounting purposes given that they were negotiated in close proximity to each other.

The debt extinguishment constitutes a troubled debt restructuring under ASC Topic 470, Debt because the Company is experiencing financial difficulty and a concession has been granted by the holder. As the holder of the Term Loans is a related party, the Company recorded a gain on extinguishment of $27,879 as a capital contribution recorded within additional paid-in-capital during the three and nine months ended September 30, 2025, which represents the carrying value of the Term Loans and corresponding accrued interest at the time of extinguishment of $29,438 offset by the $100 of cash consideration paid to GAT, the incremental fair value of the warrants due to modification of $1,455, and the direct and incremental costs associated with the Satisfaction Agreement and the Voting and Extension Agreement of $4.

The Company uses the Black-Scholes option model to estimate the fair value of the Term Loan Warrants immediately prior to modification and immediately after in connection with the Voting and Extension Agreement. In applying the Black-Scholes option model, the Company used the following assumptions:

	Assumptions
	Pre-Modification		Post-Modification
Risk-free rate		3.6% - 4.0%		3.6%
Expected dividend yield		0%		0%
Expected term (years)		0.48 - 1.81		3.32
Expected volatility		63.0% - 147.0%		113.0%
Exercise price		$1.24 - $3.05		$1.24 - $3.05
Stock Price		$1.35		$1.35

9. Debt (Related Party)

Convertible Notes

In 2012, the Company issued a convertible note to a controlling stockholder and member of the board of directors (the “2012 Convertible Note”) and in 2013 the Company issued convertible notes to various stockholders (the “2013 Convertible Notes”) (collectively, the “Convertible Notes”). On April 17, 2023, the Convertible Notes were amended as part of the Business Combination Agreement, to provide for automatic conversion immediately prior to the Merger. The conversion formulae were not adjusted as part of these amendments. The loan amendments were accounted for as extinguishments with a related party and treated as deemed capital contributions.

Effective concurrently with the Merger, the outstanding balance of principal and any unpaid accrued interest on the Convertible Notes was automatically converted into Common Stock at a conversion price of $15.72 per share (see Note 3) and the fair value of the Convertible Notes was derecognized from the consolidated balance sheets.

The Company elected the fair value option for the Convertible Notes under ASC 825, with changes in fair value recorded in earnings each reporting period. The Company recorded an expense of $13.3 million related to the change in fair value prior to the conversion of the Convertible Notes during the year ended December 31, 2023.

Envoy Bridge Note

On April 17, 2023, the Company entered into the Envoy Bridge Note with a controlling stockholder and member of the board of directors for an aggregate borrowing capacity of $10.0 million, an interest rate of 4.5% per annum and maturity date of December 31, 2025. The Envoy Bridge Note was unsecured. According to this agreement, $4.0 million of the borrowing capacity was funded via the transfer of $4.0 million in principal from the 2012 Convertible Note. An additional $3.0 million was drawn upon during the second quarter of 2023 and $3.0 million was drawn upon during the third quarter of 2023. The transfer of $4.0 million in principal from the 2012 Convertible Note to the Envoy Bridge Note was accounted for as a debt modification.

The difference between the proceeds received and the issuance-date fair value was recorded as a deemed capital contribution from related party in the consolidated statements of stockholders’ deficit.

The Company could have prepaid the Envoy Bridge Note in whole or in part without premium or penalty. Contingent upon, and effective concurrently with the Merger, the outstanding balance of principal and any unpaid accrued interest, automatically converted to Series A Preferred Stock at a conversion price of $10.00 per share.

If the Business Combination Agreement terminated pursuant to its terms, at the sole discretion of the noteholder, the outstanding principal amount plus accrued and unpaid interest could have been converted into shares of Envoy Medical Corporation Common Stock at a conversion price of $1.00 per share, subject to various adjustments as defined in the agreement.

If the Business Combination Agreement terminated pursuant to its terms and in the event that the Company obtained additional equity financing pursuant to which the Company sold shares of either common or preferred stock, at the sole discretion of the noteholder, the principal amount plus accrued and unpaid interest would have converted to the class of stock being offered in the financing at a price per share equal to 80% of the price per share paid by investors for the offered shares.

On August 23, 2023, the Envoy Bridge Note was amended pursuant to which the Company could have drawn an additional $5.0 million if the Company had less than $5.0 million in cash or net tangible assets immediately following the Merger. In addition, the Company could have drawn up to $2.0 million if the Merger did not occur by September 30, 2023.

Effective concurrently with the Merger, the outstanding balance of principal and any unpaid accrued interest, was automatically converted to Series A Preferred Stock at a conversion price of $10.00 per share and the fair value of the Envoy Bridge Note was derecognized from the consolidated balance sheets.

2024 Term Loans

In February 2024, the Company issued a promissory note (the “February 2024 Term Loan”) with a minimum principal amount of $5.0 million and up to $10.0 million to GAT, an entity controlled by Glen A. Taylor, a member of the Company’s board of directors and a controlling stockholder of the Company. At closing, the Company drew down $5.0 million from the February 2024 Term Loan. Provided that no event of default had occurred and the Company submitted a request for funding certifying that the Company had less than $7.5 million of net tangible assets, the Company had the ability to draw the remaining $5.0 million in $2.5 million tranches, as long as each request was made prior to February 1, 2025. In both May 2024 and July 2024, the Company requested and received additional advances of $2.5 million under the February 2024 Term Loan. As of December 31, 2024, the balance outstanding on the February 2024 Term Loan was $9.5 million, net of discount.

The February 2024 Term Loan has a five-year term and matures on February 27, 2029. The principal amount drawn bears interest at a rate of 8.0% per annum and is paid quarterly in arrears after the second anniversary of the February 2024 Term Loan. Interest will accrue and is not payable for the first two years of the term and will compound and be added to the principal balance of the February 2024 Term Loan both on the first and second anniversary of the February 2024 Term Loan. The Company may prepay the accrued interest and principal of the February 2024 Term Loan without penalty, with 10 days’ notice.

In August 2024, the Company issued an additional promissory note (the “August 2024 Term Loan” and, collectively with the February 2024 Term Loan, the “2024 Term Loans”) with a principal amount of up to $10.0 million to GAT. At closing, the Company drew down $5.0 million from the August 2024 Term Loan. Provided that no event of default had occurred and the Company submitted a request for funding certifying that the Company had less than $7.5 million of net tangible assets, the Company had the ability to draw the remaining $5.0 million in $2.5 million tranches, as long as each request is made prior to August 1, 2025. In December 2024, the Company requested and received an additional advance of $5.0 million under the August 2024 Term Loan. As of December 31, 2024, the balance outstanding on the August 2024 Term Loan was $9.2 million, net of discount.

The August 2024 Term Loan has a five-year term and matures on August 27, 2029. The principal amount drawn bears interest at a rate of 8.0% per annum and is paid quarterly in arrears after the second anniversary of the August 2024 Term Loan. Interest will accrue and is not payable for the first two years of the term and will compound and be added to the principal balance of the August 2024 Term Loan both on the first and second anniversary of the August 2024 Term Loan. The Company may prepay the accrued interest and principal of the August 2024 Term Loan without penalty, with 10 days’ notice.

As a commitment fee, the Company is required to issue warrants to purchase 250,000 shares of its Common Stock for each $2.5 million of principal funded under the 2024 Term Loans. The warrants will have an exercise price equal to the closing price on the date of funding of the applicable tranche.

At closing of the initial funding of the February 2024 Term Loan, the Company issued warrants to purchase 500,000 shares of Common Stock at an exercise price of $1.24 per share. These warrants expire on February 27, 2026. Upon the second draw made in May 2024, the Company issued warrants to purchase 250,000 shares of Common Stock at an exercise price of $3.04 per share. These warrants expire on February 28, 2026. Upon the third draw made in July 2024, the Company issued warrants to purchase 250,000 shares of Common Stock at an exercise price of $2.25 per share. These warrants expire on July 23, 2026.

At closing of the initial funding of the August 2024 Term Loan, the Company issued warrants to purchase 500,000 shares of Common Stock at an exercise price of $2.97 per share. These warrants expire on August 27, 2026. Upon the second draw made in December 2024, the Company issued warrants to purchase 500,000 shares of Common Stock at an exercise price of $2.20 per share. These warrants expire on December 11, 2026.

The 2024 Term Loans were accounted for as a conventional debt instrument and are accounted for in accordance with ASU 2020-06.

As a result of the issuance of the warrants with the initial closing of the February 2024 Term Loan, which met the criteria for equity classification under applicable U.S. GAAP, the Company recorded the fair value of the warrants on the issuance date in the amount of $0.2 million as a debt discount and additional paid-in capital on the consolidated balance sheets. As a result of the additional draws made in May 2024 and July 2024, the Company recorded the fair value of the additional warrants in the amount of $0.2 million and $0.2 million, respectively, as debt discounts and additional paid-in capital. Subsequently, these debt discounts are being recorded to interest expense, related party over the term of the February 2024 Term Loan.

As a result of the issuance of the warrants with the initial closing of the August 2024 Term Loan, which met the criteria for equity classification under applicable U.S. GAAP, the Company recorded the fair value of the warrants on the issuance date in the amount of $0.5 million as a debt discount and additional paid-in capital on the consolidated balance sheets. As a result of the additional draw made in December 2024, the Company recorded the fair value of the additional warrant in the amount of $0.3 million as a debt discount and additional paid-in capital. Subsequently, this debt discount is being recorded to interest expense, related party over the term of the August 2024 Term Loan.

The fair value of the warrants issued in connection with the 2024 Term Loans is estimated using the Black-Scholes option model using the following key inputs during the year ended December 31, 2024:

	Year Ended December 31, 2024
Risk-free interest rate	3.8% - 4.9%
Expected term (years)	1.77 - 2.00
Volatility	42.0% - 49.0%
Stock price	$1.24 - $3.05

During the year ended December 31, 2024, respectively, the Company recognized $0.7 million of interest expense in relation to the 2024 Term Loans, at an effective interest rate of 9.68% and 10.67% for the February 2024 Term Loan and August 2024 Term Loan, respectively. Additionally, during the year ended December 31, 2024, the Company recognized $0.1 million of amortization of the debt discount. As of December 31, 2024, accrued interest of $0.7 million is recorded in accrued expenses and unamortized debt discount of $1.3 million is recorded within term loans payable (related party) on the Company’s consolidated balance sheets.