BillionToOne (BLLN) SVP John ten Bosch Sells 1,416 Shares

What Happened John R. ten Bosch, Senior Vice President of Laboratory Operations at BillionToOne (BLLN), sold 1,416 shares in an open-market or private sale on September 21, 2026. The shares were disposed at $106.61 each for a reported total of $150,960. This was a sale (not a purchase), and it was effected pursuant to a pre-established trading arrangement.

Key Details

• Transaction date and price: 2026-09-21, 1,416 shares sold at $106.61 each (total $150,960).
• Report filed: Form 4 filed on 2026-09-23 (filed two days after the trade).
• Shares owned after transaction: not specified in the information provided in this summary.
• Footnote: Transaction was effected under a Rule 10b5-1 trading plan adopted June 2, 2026 (prearranged plan).
• Filing timeliness: Filing appears timely (filed within the typical two-business-day window after the transaction).

Context Sales executed under a 10b5-1 plan are prearranged and generally reduce the extent to which the sale signals insider sentiment about the company. Retail investors should note this was a routine insider sale reported by an officer, not an indicated purchase or exercise of options. The filing does not suggest additional insider status changes or 10% owner activity.