NASDAQ:BLLN | Insider Transactions | BillionToOne, Inc.

BLLN Insider Transactions

130 retained open-market purchase and sale rows from SEC Forms 3, 4 and 5, newest first. This page shows rows 1–100; provenance stays internal.

BLLN insiders transaction timeline

PurchaseSale
2025-11-07: 11 purchases — Lynch Thomas P., Tsao David, ten Bosch John Roderick and 3 more2026-06-08: 15 sales — Atay Oguzhan, Sakakibara Shan Riku, Johnson Nancy JoAnn2026-06-09: 4 sales — Johnson Nancy JoAnn2026-06-15: 13 sales — Tsao David, ten Bosch John Roderick2026-06-24: 2 sales — Sakakibara Shan Riku2026-06-29: 1 sale — ten Bosch John Roderick2026-07-01: 1 sale — Johnson Nancy JoAnn2026-07-06: 28 sales — Atay Oguzhan2026-07-09: 9 sales — Atay Oguzhan, Sakakibara Shan Riku2026-07-13: 13 sales — Tsao David, ten Bosch John Roderick2026-07-16: 4 sales — Johnson Nancy JoAnn2026-07-31: 1 sale — Sakakibara Shan Riku2026-08-03: 23 sales — Atay Oguzhan2026-08-05: 1 sale — Atay Oguzhan2026-08-10: 2 sales — ten Bosch John Roderick, Tsao David2026-08-25: 2 sales — Tsao David, ten Bosch John Roderick2025-11-072026-08-25
Insider profileRoleDateTransactionSharesPrice
Tsao DavidChief Technology Officer2026-08-25Sale10,000$100
ten Bosch John RoderickSVP of Laboratory Operations2026-08-25Sale1,417$100
ten Bosch John RoderickSVP of Laboratory Operations2026-08-10Sale1,417$92.86
Tsao DavidChief Technology Officer2026-08-10Sale10,000$92.86
Atay OguzhanChairman and CEO2026-08-05Sale15,539$150.0323
Atay OguzhanChairman and CEO2026-08-03Sale2,431$138.0892
Atay OguzhanChairman and CEO2026-08-03Sale9,989$137.2456
Atay OguzhanChairman and CEO2026-08-03Sale6,354$136.4246
Atay OguzhanChairman and CEO2026-08-03Sale135$135.4241
Atay OguzhanChairman and CEO2026-08-03Sale555$133.8083
Atay OguzhanChairman and CEO2026-08-03Sale269$133.0074
Atay OguzhanChairman and CEO2026-08-03Sale6,250$137.37
Atay OguzhanChairman and CEO2026-08-03Sale6,250$137.37
Atay OguzhanChairman and CEO2026-08-03Sale82$139.2042
Atay OguzhanChairman and CEO2026-08-03Sale760$138.0901
Atay OguzhanChairman and CEO2026-08-03Sale3,125$137.2457
Atay OguzhanChairman and CEO2026-08-03Sale1,983$136.424
Atay OguzhanChairman and CEO2026-08-03Sale43$135.4088
Atay OguzhanChairman and CEO2026-08-03Sale173$133.8076
Atay OguzhanChairman and CEO2026-08-03Sale84$133.0096
Atay OguzhanChairman and CEO2026-08-03Sale82$139.209
Atay OguzhanChairman and CEO2026-08-03Sale762$138.0897
Atay OguzhanChairman and CEO2026-08-03Sale3,124$137.2453
Atay OguzhanChairman and CEO2026-08-03Sale1,981$136.4246
Atay OguzhanChairman and CEO2026-08-03Sale44$135.4122
Atay OguzhanChairman and CEO2026-08-03Sale173$133.8076
Atay OguzhanChairman and CEO2026-08-03Sale84$133.0045
Atay OguzhanChairman and CEO2026-08-03Sale267$139.2052
Sakakibara Shan RikuChief Product Officer2026-07-31Sale4,000$140.21
Johnson Nancy JoAnnSee Remarks2026-07-16Sale906$129.7787
Johnson Nancy JoAnnSee Remarks2026-07-16Sale5,601$128.9551
Johnson Nancy JoAnnSee Remarks2026-07-16Sale5,559$127.886
Johnson Nancy JoAnnSee Remarks2026-07-16Sale2,133$126.9821
Tsao DavidChief Technology Officer2026-07-13Sale2,274$123.7088
Tsao DavidChief Technology Officer2026-07-13Sale1,138$122.8428
Tsao DavidChief Technology Officer2026-07-13Sale821$126.888
Tsao DavidChief Technology Officer2026-07-13Sale3,185$125.8458
Tsao DavidChief Technology Officer2026-07-13Sale2,415$124.8996
Tsao DavidChief Technology Officer2026-07-13Sale2,477$123.8435
Tsao DavidChief Technology Officer2026-07-13Sale1,102$122.9045
Tsao DavidChief Technology Officer2026-07-13Sale1,028$126.8952
Tsao DavidChief Technology Officer2026-07-13Sale3,835$125.7588
Tsao DavidChief Technology Officer2026-07-13Sale1,725$124.6538
ten Bosch John RoderickSVP of Laboratory Operations2026-07-13Sale1,417$125.46
ten Bosch John RoderickSVP of Laboratory Operations2026-07-13Sale1,417$125.46
ten Bosch John RoderickSVP of Laboratory Operations2026-07-13Sale1,417$125.46
Atay OguzhanChairman and CEO2026-07-09Sale352$128.2318
Atay OguzhanChairman and CEO2026-07-09Sale2,657$127.4366
Atay OguzhanChairman and CEO2026-07-09Sale2,002$126.4839
Atay OguzhanChairman and CEO2026-07-09Sale7,489$125.4264
Sakakibara Shan RikuChief Product Officer2026-07-09Sale1,354$125
Sakakibara Shan RikuChief Product Officer2026-07-09Sale1,355$125
Sakakibara Shan RikuChief Product Officer2026-07-09Sale1,117$125
Sakakibara Shan RikuChief Product Officer2026-07-09Sale174$125
Sakakibara Shan RikuChief Product Officer2026-07-09Sale4,000$125
Atay OguzhanChairman and CEO2026-07-06Sale622$124.6144
Atay OguzhanChairman and CEO2026-07-06Sale5,253$123.8094
Atay OguzhanChairman and CEO2026-07-06Sale6,223$123.0714
Atay OguzhanChairman and CEO2026-07-06Sale1,115$121.8364
Atay OguzhanChairman and CEO2026-07-06Sale1,828$120.6601
Atay OguzhanChairman and CEO2026-07-06Sale3,639$119.365
Atay OguzhanChairman and CEO2026-07-06Sale50$124.74
Atay OguzhanChairman and CEO2026-07-06Sale1,320$118.4866
Atay OguzhanChairman and CEO2026-07-06Sale1,221$124.0448
Atay OguzhanChairman and CEO2026-07-06Sale2,324$123.2472
Atay OguzhanChairman and CEO2026-07-06Sale586$122.0845
Atay OguzhanChairman and CEO2026-07-06Sale444$120.688
Atay OguzhanChairman and CEO2026-07-06Sale591$119.6744
Atay OguzhanChairman and CEO2026-07-06Sale1,034$118.8071
Atay OguzhanChairman and CEO2026-07-06Sale50$124.74
Atay OguzhanChairman and CEO2026-07-06Sale1,221$124.0448
Atay OguzhanChairman and CEO2026-07-06Sale2,323$123.2473
Atay OguzhanChairman and CEO2026-07-06Sale587$122.0839
Atay OguzhanChairman and CEO2026-07-06Sale444$120.688
Atay OguzhanChairman and CEO2026-07-06Sale591$119.6744
Atay OguzhanChairman and CEO2026-07-06Sale1,034$118.8074
Atay OguzhanChairman and CEO2026-07-06Sale194$124.6147
Atay OguzhanChairman and CEO2026-07-06Sale1,642$123.8093
Atay OguzhanChairman and CEO2026-07-06Sale1,945$123.0709
Atay OguzhanChairman and CEO2026-07-06Sale349$121.8357
Atay OguzhanChairman and CEO2026-07-06Sale570$120.6596
Atay OguzhanChairman and CEO2026-07-06Sale1,138$119.3648
Atay OguzhanChairman and CEO2026-07-06Sale412$118.487
Johnson Nancy JoAnnSee Remarks2026-07-01Sale801$124.9137
ten Bosch John RoderickSVP of Laboratory Operations2026-06-29Sale1,416$120
Sakakibara Shan RikuChief Product Officer2026-06-24Sale4,000.0$110.0
Sakakibara Shan RikuChief Product Officer2026-06-24Sale4,000.0$110.0
Tsao DavidChief Technology Officer2026-06-15Sale563.0$104.32
Tsao DavidChief Technology Officer2026-06-15Sale2,398.0$103.63
Tsao DavidChief Technology Officer2026-06-15Sale2,978.0$102.6
Tsao DavidChief Technology Officer2026-06-15Sale2,461.0$101.37
Tsao DavidChief Technology Officer2026-06-15Sale1,000.0$100.05
Tsao DavidChief Technology Officer2026-06-15Sale600.0$98.74
Tsao DavidChief Technology Officer2026-06-15Sale230.0$104.47
Tsao DavidChief Technology Officer2026-06-15Sale2,889.0$103.68
Tsao DavidChief Technology Officer2026-06-15Sale2,816.0$102.77
Tsao DavidChief Technology Officer2026-06-15Sale2,361.0$101.55
Tsao DavidChief Technology Officer2026-06-15Sale1,704.0$100.37
ten Bosch John RoderickSee Remarks2026-06-15Sale1,416.0$101.47
ten Bosch John RoderickSee Remarks2026-06-15Sale1,416.0$101.47