Company: HCWB
Filing Date: 2025-04-16
Form Type: 424B3
Source: 0001193125-25-082835
Chunk: 107

Company: HCW Biologics Inc.
Filing Date: 2025-04-16
Form: 424B3
Chunk 107
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 agreement. A non-U.S. Holder may be subject to backup withholding (currently at a rate of 24%) in connection with actual or constructive dividends with
respect to our securities and the proceeds from the sales, exchange or other disposition of our securities unless the non-U.S. Holder provides to the applicable withholding agent a properly executed IRS Form W-8BEN or W-8BEN-E (or other applicable form) certifying under penalties of perjury that the
non-U.S. Holder is not a United States person, or otherwise qualifies for an exemption.

Backup
withholding is not an additional tax. Any amounts withheld under the backup withholding rules will be allowed as a refund or credit against U.S. federal income tax liability, provided that the required information is timely furnished to the IRS.
Holders are urged to consult their own tax advisor regarding the information reporting and backup withholding rules.

Foreign Account Tax Compliance Act

Sections 1471 through 1474 of the U.S. Tax Code and the Treasury Regulations and administrative guidance promulgated
thereunder (commonly referred as the “Foreign Account Tax Compliance Act” or “FATCA”) generally impose withholding at a rate of 30% in certain circumstances on actual or constructive dividends in respect of our
securities which are held by or through certain foreign financial institutions (including investment funds), unless any such institution (1) enters into, and complies with, an agreement with the IRS to report, on an annual basis, information
with respect to interests in, and accounts maintained by, the institution that are owned by certain U.S. persons and by certain non-U.S. entities that are wholly or partially owned by U.S. persons and to
withhold on certain payments, or (2) if required under an intergovernmental agreement between the United States and an applicable foreign country, reports such information to its local tax authority, which will exchange such information with
the U.S. Department of Treasury. An intergovernmental agreement between the United States and an applicable foreign country may modify these requirements. Accordingly, the entity through which our securities are held will affect the determination of
whether such withholding is required. Similarly, dividends in respect of our securities held by an investor that is a non-financial non-U.S. entity that does not qualify
under certain exceptions will generally be subject to withholding at a rate of 30%, unless such entity either (1) certifies to us or the applicable withholding agent that such entity does not have any “substantial United