BillionToOne, Inc. (BLLN) Insider Trading -- Recent Executive & Director Transactions

26 insiders reported 658 Form 4 transactions for BillionToOne, Inc. (BLLN) over the past 18 months (most recent 2026-09-23). Recent activity: ten Bosch John Roderick (SVP of Laboratory Operations) Sell 1,416 shares, Lynch Thomas P. (General Counsel, Chief Compliance Officer and Secretary) Buy 19,384 shares, Lynch Thomas P. (General Counsel, Chief Compliance Officer and Secretary) Buy 6,968 shares, Lynch Thomas P. (General Counsel, Chief Compliance Officer and Secretary) Buy 2,920 shares, Lynch Thomas P. (General Counsel, Chief Compliance Officer and Secretary) Buy 5,840 shares. Source: SEC Form 4.

DateInsiderTitleTypeSharesValue
2026-09-23ten Bosch John RoderickSVP of Laboratory OperationsSell1,416$150,960
2026-09-21Lynch Thomas P.General Counsel, Chief Compliance Officer and SecretaryBuy19,384$167,672
2026-09-21Lynch Thomas P.General Counsel, Chief Compliance Officer and SecretaryBuy6,968$80,480
2026-09-21Lynch Thomas P.General Counsel, Chief Compliance Officer and SecretaryBuy2,920$49,990
2026-09-21Lynch Thomas P.General Counsel, Chief Compliance Officer and SecretaryBuy5,840$179,755
2026-09-21Lynch Thomas P.General Counsel, Chief Compliance Officer and SecretarySell19,384$2.1M
2026-09-21Lynch Thomas P.General Counsel, Chief Compliance Officer and SecretarySell6,968$768,561
2026-09-21Lynch Thomas P.General Counsel, Chief Compliance Officer and SecretarySell2,920$322,100
2026-09-21Lynch Thomas P.General Counsel, Chief Compliance Officer and SecretarySell5,840$644,112
2026-09-16Atay OguzhanChairman and CEOBuy16,666$46,665
2026-09-16Atay OguzhanChairman and CEOBuy8,333$23,332
2026-09-16Atay OguzhanChairman and CEOSell4,465$440,389
2026-09-16Atay OguzhanChairman and CEOSell2,456$244,547
2026-09-16Atay OguzhanChairman and CEOSell2,531$254,570
2026-09-16Atay OguzhanChairman and CEOSell7,214$731,793
2026-09-16Atay OguzhanChairman and CEOSell1,680$165,708
2026-09-16Atay OguzhanChairman and CEOSell1,500$149,352
2026-09-16Atay OguzhanChairman and CEOSell2,010$202,559
2026-09-16Atay OguzhanChairman and CEOSell3,143$318,989
2026-09-16Atay OguzhanChairman and CEOSell2,666$261,268
2026-09-16Atay OguzhanChairman and CEOSell2,666$261,268
2026-09-14Sakakibara Shan RikuChief Product OfficerSell3,500$0
2026-09-11ten Bosch John RoderickSVP of Laboratory OperationsSell1,416$138,117
2026-09-11Tsao DavidChief Technology OfficerBuy10,000$28,000
2026-09-11Tsao DavidChief Technology OfficerBuy10,000$28,000

Source: SEC Form 4 filings · as of 2026-09-23