hD

Cash Flow Summary

Zenas BioPharma (ZBIO) annual cash flow statement covering fiscal 2023 through 2025, as reported to the SEC.

  • Zenas BioPharma used $172.33M of cash in operations in fiscal 2025, a bigger loss than the $119.67M in fiscal 2024.
  • After spending $18K on purchases of property and equipment, free cash flow was -$172.35M.
  • Investing activities used $251.89M and financing activities provided $215.28M. Overall, cash went down $209.19M.

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
Dec'25Dec'24Dec'23
Cash flows from operating activities:
Net loss

-377,700

-157,000

-37,124

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Net loss

-377,700

-157,000

-37,124

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Adjustments to reconcile net loss to net cash used in operating activities:
Acquired in-process research and development

171,672

-

10,000

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Acquired in-process research and development

171,672

-

10,000

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Depreciation expense

56

137

113

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Depreciation expense

56

137

113

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

-1,931

-602

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Net amortization of premiums and accretion of discounts on investments

-1,931

-602

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Non-cash interest expense on royalty obligation

7,327

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Non-cash interest expense on royalty obligation

7,327

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Stock-based compensation expense

26,347

10,821

3,495

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Stock-based compensation expense

26,347

10,821

3,495

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Change in fair value of convertible notes

-

846

300

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Change in fair value of convertible notes

-

846

300

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Non-cash lease expense

875

681

726

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Non-cash lease expense

875

681

726

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Prepaid expenses and other assets

3,156

7,701

3,349

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Prepaid expenses and other assets

3,156

7,701

3,349

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Accounts payable

-10,043

11,740

-418

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Accounts payable

-10,043

11,740

-418

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Accrued expenses

15,052

22,065

-3,558

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Accrued expenses

15,052

22,065

-3,558

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Operating lease liabilities

-902

-673

-714

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Operating lease liabilities

-902

-673

-714

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Net cash used in operating activities

-172,333

-119,674

-30,529

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Net cash used in operating activities

-172,333

-119,674

-30,529

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Cash flows from investing activities:
Purchases of property and equipment

18

131

17

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Purchases of property and equipment

18

131

17

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Purchases of investments

417,755

36,421

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Purchases of investments

417,755

36,421

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Proceeds from sales and maturities of investments

200,887

6,000

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Proceeds from sales and maturities of investments

200,887

6,000

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Product candidate license acquisitions

35,000

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Product candidate license acquisitions

35,000

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Net cash used in investing activities

-251,886

-30,552

-17

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Net cash used in investing activities

-251,886

-30,552

-17

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Cash flows from financing activities:
Proceeds from issuance of Series C convertible preferred stock, net of issuance costs

-

178,381

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Proceeds from issuance of Series C convertible preferred stock, net of issuance costs

-

178,381

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Proceeds from exercise of stock options

4,096

275

116

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Proceeds from exercise of stock options

4,096

275

116

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Proceeds from issuance of common stock under employee stock purchase plan

276

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Proceeds from issuance of common stock under employee stock purchase plan

276

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Proceeds from royalty obligation

75,000

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Proceeds from royalty obligation

75,000

-

-

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

-

-

20,000

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

-

-

20,000

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Net cash provided by financing activities

215,280

412,958

20,116

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Net cash provided by financing activities

215,280

412,958

20,116

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Effect of exchange rate changes on cash and cash equivalents

-252

157

78

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Effect of exchange rate changes on cash and cash equivalents

-252

157

78

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Net increase (decrease) in cash and cash equivalents

-209,191

262,889

-10,352

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Net increase (decrease) in cash and cash equivalents

-209,191

262,889

-10,352

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

1,500

1,100

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Right-of-use assets obtained under operating lease arrangements

1,500

1,100

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Equity consideration for InnoCare license, at fair value

136,672

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Equity consideration for InnoCare license, at fair value

136,672

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Conversion of convertible preferred stock to common stock upon closing of initial public offering

-

449,612

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Conversion of convertible preferred stock to common stock upon closing of initial public offering

-

449,612

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Conversion of BMS Note into Series C convertible preferred stock

-

21,146

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Conversion of BMS Note into Series C convertible preferred stock

-

21,146

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Deferred offering costs in accounts payable and accrued expenses

18

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Deferred offering costs in accounts payable and accrued expenses

18

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Deferred offering costs in accrued expenses

-

-

1,388

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Deferred offering costs in accrued expenses

-

-

1,388

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

IPO
Payment of agent fees and offering costs

-

6,334

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Payment of agent fees and offering costs

-

6,334

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Proceeds from issuance of common stock

-

240,636

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Proceeds from issuance of common stock

-

240,636

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

PIPE and ATM
Payment of agent fees and offering costs

12,665

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Payment of agent fees and offering costs

12,665

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Private Investment in Public Equity
Proceeds from issuance of common stock

120,000

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Proceeds from issuance of common stock

120,000

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

ATM Program
Proceeds from issuance of common stock, net of commissions

28,573

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

Proceeds from issuance of common stock, net of commissions

28,573

-

-

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx