ten Bosch John Roderick 4

What Happened

• John R. ten Bosch, Senior Vice President of Laboratory Operations at BillionToOne (BLLN), reported three sales on 2026-07-13, disposing of a total of 4,251 shares (3 x 1,417 shares) at $125.46 per share. Each block generated $177,777, for aggregate proceeds of approximately $533,331. The transactions are reported as open-market or private sales (code S).

Key Details

• Transaction date: July 13, 2026
• Price per share: $125.46
• Shares sold: 3 transactions of 1,417 shares each; total 4,251 shares
• Total proceeds: ~$533,331 (3 × $177,777)
• Shares owned after transaction: Not specified in the provided Form 4
• Filing: Form 4 filed July 15, 2026 (two business days after the trades)
• Footnote: Transactions were made under a Rule 10b5-1 trading plan adopted March 6, 2026

Context

• These are sales (not purchases) and were executed under a pre-established 10b5-1 plan, which typically indicates pre-planned, systematic disposition rather than an opportunistic trade. The filing appears timely (filed within the usual two-business-day window for Form 4).