hD

Cash Flow Summary

Zenas BioPharma (ZBIO) quarterly cash flow statement covering the six quarters from March 2025 to June 2026, as reported to the SEC.

  • Zenas BioPharma used $57.24M of cash in operations in the quarter ended June 30, 2026, a bigger loss than the $41.74M a year earlier.
  • After spending $0 on purchases of property and equipment, free cash flow was -$57.24M.
  • Investing activities used $287.7M and financing activities provided $42.06M. Overall, cash went down $303.65M.

A cash flow statement shows the cash that actually came in and went out, split between running the business, investing and financing.

Figures in USD thousands
Jun'26Mar'26Dec'25Sep'25Jun'25Mar'25
Cash flows from operating activities:
Net loss

-111,400

-81,000

-240,400

-51,500

-52,200

-33,600

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Net loss

-111,400

-81,000

-240,400

-51,500

-52,200

-33,600

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation expense

4

6

10

11

12

23

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Depreciation expense

4

6

10

11

12

23

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Loss on disposal of property and equipment

-

-

-

-

-

-107

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Loss on disposal of property and equipment

-

-

-

-

-

-107

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Net amortization of premiums and accretion of discounts on investments

-1,287

-110

-421

-193

-935

-382

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Net amortization of premiums and accretion of discounts on investments

-1,287

-110

-421

-193

-935

-382

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Non-cash interest expense on royalty obligation

6,837

6,263

-

-

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Non-cash interest expense on royalty obligation

6,837

6,263

-

-

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Non-cash interest expense on senior secured term loan

2,054

34

-

-

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Non-cash interest expense on senior secured term loan

2,054

34

-

-

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Stock-based compensation expense

8,619

9,195

7,580

7,336

6,045

5,386

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Stock-based compensation expense

8,619

9,195

7,580

7,336

6,045

5,386

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Change in fair value of convertible notes

-

-

-

-

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Change in fair value of convertible notes

-

-

-

-

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Non-cash lease expense

269

264

224

205

200

246

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Non-cash lease expense

269

264

224

205

200

246

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Prepaid expenses and other assets

-1,109

6,482

2,357

1,601

-1,155

353

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Prepaid expenses and other assets

-1,109

6,482

2,357

1,601

-1,155

353

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Accounts payable

-1,334

1,795

1,116

-1,954

-12,087

2,882

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Accounts payable

-1,334

1,795

1,116

-1,954

-12,087

2,882

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Accrued expenses

7,938

-4,963

9,801

102

16,314

-11,165

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Accrued expenses

7,938

-4,963

9,801

102

16,314

-11,165

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Operating lease liabilities

-270

-211

-245

-211

-224

-222

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Operating lease liabilities

-270

-211

-245

-211

-224

-222

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Other current liabilities

-

-

-

-

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Other current liabilities

-

-

-

-

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Net cash used in operating activities

-57,237

-75,196

-52,414

-41,125

-41,743

-37,051

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Net cash used in operating activities

-57,237

-75,196

-52,414

-41,125

-41,743

-37,051

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Cash flows from investing activities:
Purchases of property and equipment

-

2

-

-

-

18

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Purchases of property and equipment

-

2

-

-

-

18

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Purchases of investments

331,810

76,520

132,893

59,195

126,553

99,114

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Purchases of investments

331,810

76,520

132,893

59,195

126,553

99,114

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Proceeds from sales and maturities of investments

74,106

108,133

69,529

104,238

14,262

12,858

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Proceeds from sales and maturities of investments

74,106

108,133

69,529

104,238

14,262

12,858

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Net cash used in investing activities

-287,704

31,611

-93,364

40,043

-112,291

-86,274

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Net cash used in investing activities

-287,704

31,611

-93,364

40,043

-112,291

-86,274

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Cash flows from financing activities:
Payments of other offering costs for the ATM offering and equity offering

-

-

-

-

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Payments of other offering costs for the ATM offering and equity offering

-

-

-

-

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Payments of debt issuance costs for the senior secured term loan and convertible senior notes

1,460

474

-

-

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Payments of debt issuance costs for the senior secured term loan and convertible senior notes

1,460

474

-

-

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Proceeds from exercise of stock options

806

367

1,611

664

1,722

99

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Proceeds from exercise of stock options

806

367

1,611

664

1,722

99

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Proceeds from issuance of common stock under employee stock purchase plan

-

592

-

-

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Proceeds from issuance of common stock under employee stock purchase plan

-

592

-

-

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Proceeds from senior secured term loan, net of discount

-

73,500

-

-

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Proceeds from senior secured term loan, net of discount

-

73,500

-

-

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Proceeds from the issuance of convertible senior notes, inclusive of underwriters' exercise of the overallotment option in full, net of commissions

29,100

194,000

-

-

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Proceeds from the issuance of convertible senior notes, inclusive of underwriters' exercise of the overallotment option in full, net of commissions

29,100

194,000

-

-

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Net cash provided by financing activities

42,057

433,479

140,843

72,616

1,722

99

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Net cash provided by financing activities

42,057

433,479

140,843

72,616

1,722

99

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Effect of exchange rate changes on cash and cash equivalents

-763

-311

11

25

-236

-52

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Effect of exchange rate changes on cash and cash equivalents

-763

-311

11

25

-236

-52

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Net increase (decrease) in cash and cash equivalents

-303,647

389,583

-4,924

71,559

-152,548

-123,278

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Net increase (decrease) in cash and cash equivalents

-303,647

389,583

-4,924

71,559

-152,548

-123,278

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Supplemental disclosure of non-cash investing and financing activities:
Right-of-use assets obtained under operating lease arrangements

-

-

1,055

-

-

445

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Right-of-use assets obtained under operating lease arrangements

-

-

1,055

-

-

445

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Deferred offering costs and debt issuance costs in accounts payable and accrued expenses

-1,733

1,758

-

-

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Deferred offering costs and debt issuance costs in accounts payable and accrued expenses

-1,733

1,758

-

-

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Deferred offering costs in accounts payable and accrued expenses

-

-

-

-

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Deferred offering costs in accounts payable and accrued expenses

-

-

-

-

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

ATM Program
Payments of other offering costs for the ATM offering

-

38

-

-

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Payments of other offering costs for the ATM offering

-

38

-

-

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Proceeds from issuance of common stock, net of commissions

-

71,532

-

-

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Proceeds from issuance of common stock, net of commissions

-

71,532

-

-

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Equity Offering
Proceeds from issuance of common stock, net of commissions

14,100

94,000

-

-

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Proceeds from issuance of common stock, net of commissions

14,100

94,000

-

-

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx