Company: BLLN
Filing Date: 2025-08-11
Form Type: DRS/A
Source: 0000950123-25-007483
Chunk: 291

Company: BillionToOne, Inc.
Filing Date: 2025-08-11
Form: DRS/A
Chunk 291
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 U.S. offices of a foreign broker, the broker will generally be required to report the amount of proceeds paid to the non-U.S. holder to the IRS and impose backup withholding on
that amount unless such non-U.S. holder provides appropriate certification to the broker of its status as a non-U.S. holder (and the payer does not have actual knowledge
or reason to know that such holder is a U.S. person) or otherwise establishes an exemption.

Backup withholding is not an additional tax. Any amounts withheld under
the backup withholding rules from a payment to a non-U.S. holder generally can be credited against the non-U.S. holder’s U.S. federal income tax liability, if any,
or refunded, provided that the required information is furnished to the IRS in a timely manner. Non-U.S. holders should consult their tax advisors regarding the application of the information reporting and
backup withholding rules to them.

Foreign account tax compliance act

Under the Foreign Account Tax Compliance Act (FATCA), a withholding tax of 30% applies to certain payments to foreign financial institutions, including investment funds,
and certain other non-U.S. entities that fail to comply with certain information reporting and certification requirements pertaining to their direct and indirect U.S. securityholders and/or U.S. accountholders
and do not otherwise qualify for an exemption. Under applicable Treasury Regulations and IRS guidance, this withholding currently applies to payments of dividends,

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if any, on, and, subject to the proposed Treasury Regulations discussed below, gross proceeds from the sale or other disposition of our Class A common stock. An intergovernmental agreement
between the United States and a foreign country may modify the requirements described in this paragraph.

While, beginning on January 1, 2019, withholding under
FATCA would have applied also to payments of gross proceeds from the sale or other disposition of our Class A common stock, proposed Treasury Regulations eliminate FATCA withholding on payments of gross proceeds entirely. Taxpayers (including
applicable withholding agents) generally may rely on these proposed Treasury Regulations until final Treasury Regulations are issued.

If withholding under FATCA is
required on any payment related to our Class A common stock, investors not otherwise subject to withholding (or that otherwise would be entitled to a reduced rate of withholding) on such payment may be required to seek a refund or credit from
the IRS.

Prospective investors are encouraged to consult with their own tax advisors regarding the possible implications of FATCA on their investment in our
Class A common stock.