S-1 S-1 EX-FILING FEES 0001828673 HCW Biologics Inc. N/A N/A 0001828673 2026-08-20 2026-08-20 0001828673 1 2026-08-20 2026-08-20 0001828673 2 2026-08-20 2026-08-20 0001828673 3 2026-08-20 2026-08-20 0001828673 4 2026-08-20 2026-08-20 0001828673 5 2026-08-20 2026-08-20 iso4217:USD xbrli:pure xbrli:shares

Calculation of Filing Fee Tables

S-1

HCW Biologics Inc.

Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable

Security Type

Security Class Title

Fee Calculation or Carry Forward Rule

Amount Registered

Proposed Maximum Offering Price Per Unit

Maximum Aggregate Offering Price

Fee Rate

Amount of Registration Fee

Carry Forward Form Type

Carry Forward File Number

Carry Forward Initial Effective Date

Filing Fee Previously Paid in Connection with Unsold Securities to be Carried Forward

Newly Registered Securities
Fees to be Paid 1 Equity Common Stock, par value $0.0001 per share Other 618,682 $ 2.55 $ 1,577,639.10 0.0001381 $ 217.87
Fees to be Paid 2 Equity Pre-Funded Warrants Other 0.0001381 $ 0.00
Fees to be Paid 3 Equity Common Stock Underlying Pre-Funded Warrants Other 0.0001381 $ 0.00
Fees to be Paid 4 Equity Common Warrants Other 0.0001381 $ 0.00
Fees to be Paid 5 Equity Common Stock underlying Common Warrants Other 618,682 $ 2.585 $ 1,599,292.97 0.0001381 $ 220.86
Fees Previously Paid
Carry Forward Securities
Carry Forward Securities

Total Offering Amounts:

$ 3,176,932.07

$ 438.73

Total Fees Previously Paid:

$ 0.00

Total Fee Offsets:

$ 0.00

Net Fee Due:

$ 438.73

Offering Note

1

Pursuant to Rule 416 under the Securities Act of 1933, as amended (the "Securities Act"), the shares of Common Stock being registered hereby include an indeterminate number of shares of Common Stock that may be issuable as a result of stock splits, stock dividends or similar transactions. The shares of Common Stock being registered for resale consist of (i) 218,682 shares of Common Stock issued in the July 2026 private placement and (ii) 400,000 shares of Common Stock issuable upon exercise of pre-funded warrants issued in the July 2026 private placement. Estimated solely for purposes of calculating the registration fee pursuant to Rule 457(c) under the Securities Act based on the average of the high and low sale prices of the registrant's Common Stock on The Nasdaq Capital Market on August 18, 2026. The registrant will not receive any proceeds from the sale of the shares of Common Stock by the selling stockholders.

2

Represents 400,000 Pre-Funded Warrants issued in the July 2026 Private Placement. Pursuant to Rule 457(g) under the Securities Act, because the shares of Common Stock issuable upon exercise of the Pre-Funded Warrants are being registered hereby, no separate registration fee is payable with respect to the pre-funded warrants.

3

Pursuant to Rule 416 under the Securities Act, the shares of Common Stock being registered hereby include an indeterminate number of shares of Common Stock that may be issuable as a result of stock splits, stock dividends or similar transactions. Represents 400,000 shares of Common Stock issuable upon exercise of pre-funded warrants issued in the July 2026 Private Placement. No additional registration fee is due with respect to such shares because the registration fee attributable thereto is reflected in the fee paid for the Common Stock registered pursuant to footnote (1).

4

Represents up to 618,682 common stock purchase warrants issuable pursuant to the Securities Purchase Agreement entered into in connection with the July 2026 Private Placement, subject to stockholder approval under Nasdaq Listing Rule 5635(d). Pursuant to Rule 457(g) under the Securities Act, because the shares of Common Stock issuable upon exercise of the Common Warrants are being registered hereby, no separate registration fee is payable with respect to the Common Warrants.

5

Pursuant to Rule 416 under the Securities Act, the shares of Common Stock being registered hereby include an indeterminate number of shares of Common Stock that may be issuable as a result of stock splits, stock dividends or similar transactions. Represents 618,682 shares of Common Stock issuable upon exercise of common stock purchase warrants issuable in the July 2026 Private Placement, subject to stockholder approval under Nasdaq Listing Rule 5635(d). Estimated solely for purposes of calculating the registration fee pursuant to Rule 457(g) under the Securities Act based upon the exercise price of $2.585 per share of the Common Warrants.

Table 2: Fee Offset Claims and Sources ☑Not Applicable
Registrant or Filer Name Form or Filing Type File Number Initial Filing Date Filing Date Fee Offset Claimed Security Type Associated with Fee Offset Claimed Security Title Associated with Fee Offset Claimed Unsold Securities Associated with Fee Offset Claimed Unsold Aggregate Offering Amount Associated with Fee Offset Claimed Fee Paid with Fee Offset Source
Rules 457(b) and 0-11(a)(2)
Fee Offset Claims
Fee Offset Sources
Rule 457(p)
Fee Offset Claims
Fee Offset Sources
Table 3: Combined Prospectuses ☑Not Applicable

Security Type

Security Class Title

Amount of Securities Previously Registered

Maximum Aggregate Offering Price of Securities Previously Registered

Form Type

File Number

Initial Effective Date