v3.26.1
Outstanding Debt
3 Months Ended
Mar. 31, 2026
Outstanding Debt  
Outstanding Debt

8. Outstanding Debt

The following two tables summarize outstanding debt as of March 31, 2026 and December 31, 2025, respectively (amount in thousands, except per share amounts):

  ​ ​ ​

  ​ ​ ​

Stated

  ​ ​ ​

  ​ ​ ​

  ​ ​ ​

  ​ ​ ​

Fair

  ​ ​ ​

Interest

Conversion

Remaining

Value

Carrying

Maturity Date

Rate

Price

Face Value

Debt Discount

Adjustment

Value

Short term convertible notes payable

 

  ​

 

  ​

 

  ​

 

  ​

 

  ​

 

  ​

 

  ​

6% unsecured

 

Due

 

6

%  

$

3.09

$

135

$

$

$

135

8% unsecured

May 20, 2026

8

%  

$

0.20

505

100

605

640

100

740

Short term convertible notes at fair value

0% unsecured

November 14, 2026

0

%  

Variable

4,000

637

4,637

11% unsecured

Various

11

%  

$0.21 - $0.30

28,865

(6,239)

22,626

12% unsecured

Various

12

%  

$0.18

4,695

(1,130)

3,565

37,560

(6,732)

30,828

Short term notes payable

 

  ​

 

  ​

 

  ​

 

 

  ​

 

 

  ​

0% unsecured

On Demand

0

%  

N/A

2,140

2,140

8% unsecured

 

Various

 

8

%  

 

N/A

 

9,202

 

(255)

 

 

8,947

12% unsecured

 

On Demand

 

12

%  

 

N/A

 

563

 

 

 

563

 

11,905

 

(255)

 

 

11,650

Long term convertible notes payable

11% unsecured

Various

11

%  

$0.21 - $0.23

1,494

1,494

1,494

1,494

Long term convertible notes at fair value

9% unsecured

March 4, 2028

9

%  

Variable

5,000

157

5,157

11% unsecured

Various

11

%  

$0.19 - $0.23

2,600

(244)

2,356

7,600

(87)

7,513

Long term notes payable

8% unsecured

 

Various

 

8

%  

 

N/A

 

7,715

 

(511)

 

 

7,204

Ending balance as of March 31, 2026

$

66,914

$

(666)

$

(6,819)

$

59,429

  ​ ​ ​

  ​ ​ ​

Stated

  ​ ​ ​

  ​ ​ ​

  ​ ​ ​

  ​ ​ ​

Fair

  ​ ​ ​

Interest

Conversion

Remaining

Value

Carrying

Maturity Date

Rate

Price

Face Value

Debt Discount

Adjustment

Value

Short term convertible notes payable

 

  ​

 

  ​

 

  ​

 

  ​

 

  ​

 

  ​

 

  ​

6% unsecured

 

Due

 

6

%  

$

3.09

$

135

$

$

$

135

8% unsecured

 

Various

8

%  

$

0.20

505

 

 

505

640

640

Short term convertible notes at fair value

0% unsecured

Various

0

%  

Variable

5,250

1,175

6,425

11% unsecured

Various

11

%  

$0.21 - $0.30

26,815

(5,047)

21,768

12% unsecured

Various

12

%  

$0.19 - $0.21

5,620

(1,757)

3,863

37,685

(5,629)

32,056

Short term notes payable

 

  ​

 

  ​

 

  ​

 

  ​

 

  ​

 

  ​

 

  ​

0% unsecured

On Demand

0

%  

N/A

2,140

2,140

8% unsecured

 

Various

 

8

%  

 

N/A

 

6,921

 

(156)

 

 

6,765

12% unsecured

 

On Demand

 

12

%  

 

N/A

 

563

 

 

 

563

 

9,624

 

(156)

 

 

9,468

Long term convertible notes payable

11% unsecured

Various

11

%  

$0.21-$0.22

325

325

325

325

Long term convertible notes at fair value

 

  ​

 

  ​

 

  ​

 

  ​

 

  ​

 

  ​

 

  ​

11% unsecured

 

Various

 

11

%  

$0.19-$0.25

 

5,150

 

 

70

 

5,220

 

5,150

70

5,220

Long term notes payable

8% unsecured

Various

8

%  

N/A

13,220

(887)

12,333

Ending balance as of December 31, 2025

$

66,644

$

(1,043)

$

(5,559)

$

60,042

Notes Payable

During the three months ended March 31, 2026, the Company issued approximately 20.9 million shares of common stock with a fair value of $5.2 million to certain lenders in lieu of cash payments of $4.0 million of debt, including $0.8 million of accrued interest. In addition, the Company has extinguished certain debt pursuant to exchange agreements executed with various holders pursuant to which the Company issues common stock at a price based on a limited pricing period (the “Share payable”). During the three months ended March 31, 2026, the Company settled $0.2 million of Share payables and accrued $0.3 million of Share payables. The Company recognized an approximately $1.3 million debt extinguishment loss during the three months ended March 31, 2026 from the debt redemption.

Convertible Notes

During the three months ended March 31, 2026, the Company entered into a one-year convertible note and several two-year convertible notes (collectively the “Convertible Notes”) with multiple individual investors (the “Holders”) with an aggregate principal amount of $1.5 million. The Convertible Notes bear interest at 11% per annum and are convertible into common shares between $0.21 and $0.23 per share at the Holders’ option.

During the three months ended March 31, 2026, the Company modified a convertible note that was originally issued in February 2024 by extending the maturity date. The modification was accounted for as a debt extinguishment. As a result, the Company recognized approximately $0.1 million of debt extinguishment loss during the three months ended March 31, 2026 from this debt amendment.

During the three months ended March 31, 2026, the Company converted $0.3 million of convertible notes including $6,000 accrued interest into 1.5 million shares of common stock at a conversion price of $0.21 per share.

Convertible Notes at Fair Value

On January 26, 2026, the Company entered into a one-year convertible note (the “January Convertible Note”) with an individual investor (the “Holder”) for principal amount of $1.0 million. The January Convertible Note bears interest at 11% per annum and is convertible

into common shares at $0.25 per share at the Holder’s sole option. In addition, the Holder has the right to purchase an additional two-year convertible note (the “Additional Note”) within 18 months from the issuance date of the January Convertible Note. The Additional Note shall not exceed $0.8 million and will have a conversion price at $0.50 per share.

On March 4, 2026, the Company entered into several convertible note agreements (the “March Convertible Notes”) with various commercial lenders (the “March Holders”) for an aggregate principal amount of $5 million. The March Convertible Notes bear interest at 9% per annum with a 24-month term. The March Convertible Notes are convertible into the Company’s common stock at a conversion price equal to 86% of the daily VWAP during the 10 consecutive trading days immediately after the conversion notice submission date. The amounts of such conversions are limited to 20% of the principal during any rolling 20 trading day period. The conversion restrictions will be lifted upon the Company obtaining regulatory approval of the Company’s DCVax®-L treatment for glioblastoma. In addition, the Company incurred approximately $0.5 million of issuance costs associated with the March Convertible Notes, which was recognized in interest expense on the condensed consolidated statement of operations due to the Company applying the FVO, as describe below.

The Company elected the FVO to fair value the January Convertible Note and the March Convertible Notes (collectively the “Convertible Notes at Fair Value”) on the issuance date and will subsequently remeasure at end of each reporting period. The estimated fair value of the Convertible Notes at Fair Value on the issuance date was approximate $6.7 million. The Company recognized a loss of $0.7 million upon the issuance of the Convertible Notes at Fair Value which was calculated at the difference between the principal amount and the fair value of the Convertible Notes at Fair Value.

During the three months ended March 31, 2026, the Company modified certain existing convertible notes by (i) extending the maturity dates; (ii) modifying the holder’s right to purchase additional note in the future, (iii) reducing the conversion price, and (iv) modifying the principal amount. The modifications were accounted for as a debt extinguishment as the conversion feature of the amended notes were substantially different from the original terms. As a result, the Company recognized approximately $3.3 million of debt extinguishment loss during the three months ended March 31, 2026 from these debt amendments.

During the three months ended March 31, 2026, the Company converted $3.3 million of certain convertible notes into 16 million shares of common stock at a weighted average conversion price of $0.21 per share.

For the three months ended March 31, 2026 and 2025, interest expense related to outstanding debt totaled approximately $2.2 million and $1.6 million including amortization of debt discounts totaling $0.3 million and $0.3 million, respectively.