Pagano Anthony 4

What Happened
Anthony Pagano, a director of BillionToOne, was granted 3,017 restricted stock units (RSUs) on June 10, 2026. The RSUs represent a contingent right to one share of Class A common stock per RSU and were recorded at $0.00 (no cash purchase). This is a compensation award (grant), not an open-market buy or sale.

Key Details

• Transaction date: 2026-06-10; Filing date: 2026-06-12 (Form 4 accession 0002101642-26-000002). Filing appears timely.
• Security/amount: 3,017 RSUs; reported acquisition price: $0.00 (grant).
• Vesting: RSUs vest upon the earlier of (A) the next annual meeting of stockholders or (B) the one-year anniversary of June 10, 2026 (i.e., by 2027-06-10 unless the next annual meeting occurs earlier).
• Shares owned after transaction: Not disclosed in this filing.
• No 10b5-1 plan, tax withholding, cashless exercise, or late-filing flag disclosed.

Context
RSU grants are a standard form of equity compensation for executives and directors. They do not convey immediate tradable shares or require cash outlay; shares will be delivered only if/when the RSUs vest per the service-based schedule described above. This award should be viewed as compensation rather than a direct buy or sell signal.