Dudediligence.

BillionToOne, Inc

BLLNNASDAQ · Services-Medical Laboratories
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Last 12 months

Sales planned on beside the trades reported on , and whether each names a .

Planned ·

$48.6M

46 notices · 447,229 sh

Oct 2025 to Oct 2026

Reported ·

$8,312,427

32 sales · 11 buys · $3,177,960 bought

Oct 2025 to Jun 2026

The two figures cover different periods.

All 32 reported sales carry the 10b5-1 box.

PLANNED · FORM 144Oct 2025 to Oct 2026REPORTED · FORM 4Oct 2025 to Jun 2026N2025DJ2026FMAMJJASO2026-10-05: Tsao David, Form 1442026-10-05: ten Bosch John Roderick, Form 1442026-10-05: Tsao David, Form 1442026-09-28: Atay Oguzhan, Form 1442026-09-28: Atay Oguzhan, Form 1442026-09-24: Tsao David, Form 1442026-09-24: ten Bosch John Roderick, Form 1442026-09-21: ten Bosch John Roderick, Form 1442026-09-17: Lynch Thomas P., Form 1442026-09-14: Atay Oguzhan, Form 1442026-09-14: Atay Oguzhan, Form 1442026-09-09: Tsao David, Form 1442026-09-09: Tsao David, Form 1442026-09-09: ten Bosch John Roderick, Form 1442026-09-08: Lynch Thomas P., Form 1442026-08-25: Tsao David, Form 1442026-08-25: ten Bosch John Roderick, Form 1442026-08-10: ten Bosch John Roderick, Form 1442026-08-10: Tsao David, Form 1442026-08-10: Tsao David, Form 1442026-08-05: Atay Oguzhan, Form 1442026-08-03: Atay Oguzhan, Form 1442026-08-03: Atay Oguzhan, Form 1442026-08-03: Atay Oguzhan, Form 1442026-07-31: Sakakibara Shan Riku, Form 1442026-07-16: Johnson Nancy JoAnn, Form 1442026-07-13: Tsao David, Form 1442026-07-13: ten Bosch John Roderick, Form 1442026-07-13: Tsao David, Form 1442026-07-09: Atay Oguzhan, Form 1442026-07-09: Sakakibara Shan Riku, Form 1442026-07-06: Atay Oguzhan, Form 1442026-07-06: Atay Oguzhan, Form 1442026-07-06: Atay Oguzhan, Form 1442026-07-01: Johnson Nancy JoAnn, Form 1442026-06-29: ten Bosch John Roderick, Form 1442026-06-24: Sakakibara Shan Riku, Form 1442026-06-15: Tsao David, Form 1442026-06-15: Tsao David, Form 1442026-06-15: ten Bosch John Roderick, Form 1442026-06-09: Johnson Nancy JoAnn, Form 1442026-06-08: Johnson Nancy JoAnn, Form 1442026-06-08: Atay Oguzhan, Form 1442026-06-08: Sakakibara Shan Riku, Form 1442026-06-08: Atay Oguzhan, Form 1442026-06-08: Atay Oguzhan, Form 1442025-11-07: Bremner Thomas S, bought2025-11-07: Rai Akshay, bought2025-11-07: Johnson Nancy JoAnn, bought2025-11-07: ten Bosch John Roderick, bought2025-11-07: Tsao David, bought2025-11-07: Lynch Thomas P., bought2026-06-08: Johnson Nancy JoAnn, sold2026-06-08: Sakakibara Shan Riku, sold2026-06-08: Atay Oguzhan, sold2026-06-15: ten Bosch John Roderick, sold2026-06-15: Tsao David, sold
under a no plan named▼ sale▲ buysize is dollars

Form 144 notices, newest first

2026-10-05Tsao David, Chief Technology Officer$2,162,951
20,000 shplan 2026-06-05Form 4s on file end Jun 23144 ↗
2026-10-05ten Bosch John Roderick, See Remarks$297,995
2,834 shplan 2026-06-02Form 4s on file end Jun 23144 ↗
2026-10-05Tsao David, Chief Technology Officer$184,013
1,750 shplan 2026-06-08Form 4s on file end Jun 23144 ↗
2026-09-28Atay Oguzhan, See Remarks$321,626
2,666 shplan 2026-06-07Form 4s on file end Jun 23144 ↗
2026-09-28Atay Oguzhan, See Remarks$1,005,293
8,333 shplan 2026-06-05Form 4s on file end Jun 23144 ↗
2026-09-24Tsao David, Chief Technology Officer$416,625
3,333 shplan 2026-06-05Form 4s on file end Jun 23144 ↗
2026-09-24ten Bosch John Roderick, See Remarks$169,920
1,416 shplan 2026-06-02Form 4s on file end Jun 23144 ↗
2026-09-21ten Bosch John Roderick, See Remarks$150,960
1,416 shplan 2026-06-02Form 4s on file end Jun 23144 ↗
2026-09-17Lynch Thomas P., See Remarks$3,873,966
35,112 shplan 2026-06-08Form 4s on file end Jun 23144 ↗
2026-09-14Atay Oguzhan, See Remarks$2,507,908
24,999 shplan 2026-06-05Form 4s on file end Jun 23144 ↗
2026-09-14Atay Oguzhan, See Remarks$522,536
5,332 shplan 2026-06-07Form 4s on file end Jun 23144 ↗
2026-09-09Tsao David, Chief Technology Officer$170,695
1,750 shplan 2026-06-08Form 4s on file end Jun 23144 ↗
2026-09-09Tsao David, Chief Technology Officer$2,045,326
20,000 shplan 2026-06-05Form 4s on file end Jun 23144 ↗
2026-09-09ten Bosch John Roderick, See Remarks$138,117
1,416 shplan 2026-06-02Form 4s on file end Jun 23144 ↗
2026-09-08Lynch Thomas P., See Remarks$1,984,800
20,000 shplan 2026-06-08Form 4s on file end Jun 23144 ↗
2026-08-25Tsao David, Chief Technology Officer$1,000,000
10,000 shplan 2026-03-06Form 4s on file end Jun 23144 ↗
2026-08-25ten Bosch John Roderick, See Remarks$141,700
1,417 shplan 2026-03-06Form 4s on file end Jun 23144 ↗
2026-08-10ten Bosch John Roderick, See Remarks$131,583
1,417 shplan 2026-03-06Form 4s on file end Jun 23144 ↗
2026-08-10Tsao David, Chief Technology Officer$325,010
3,500 shplan 2026-03-06Form 4s on file end Jun 23144 ↗
2026-08-10Tsao David, Chief Technology Officer$928,600
10,000 shplan 2026-03-06Form 4s on file end Jun 23144 ↗
2026-08-05Atay Oguzhan, See Remarks$2,331,352
15,539 shplan 2026-03-06Form 4s on file end Jun 23144 ↗
2026-08-03Atay Oguzhan, See Remarks$343,425
2,500 shplan 2026-03-06Form 4s on file end Jun 23144 ↗
2026-08-03Atay Oguzhan, See Remarks$1,717,125
12,500 shplan 2026-03-07Form 4s on file end Jun 23144 ↗
2026-08-03Atay Oguzhan, See Remarks$4,488,575
32,500 shplan 2026-03-06Form 4s on file end Jun 23144 ↗
2026-07-31Sakakibara Shan Riku, Chief Product Officer$560,840
4,000 shplan 2026-03-06Form 4s on file end Jun 23144 ↗
2026-07-16Johnson Nancy JoAnn, See Remarks$1,821,628
14,199 shplan 2026-03-06Form 4s on file end Jun 23144 ↗
2026-07-13Tsao David, Chief Technology Officer$250,498
20,000 shplan 2026-03-06Form 4s on file end Jun 23144 ↗
2026-07-13ten Bosch John Roderick, See Remarks$533,330
4,251 shplan 2026-03-06Form 4s on file end Jun 23144 ↗
2026-07-13Tsao David, Chief Technology Officer$439,110
3,500 shplan 2026-03-06Form 4s on file end Jun 23144 ↗
2026-07-09Atay Oguzhan, See Remarks$1,576,276
12,500 shplan 2026-03-06Form 4s on file end Jun 23144 ↗
2026-07-09Sakakibara Shan Riku, Chief Product Officer$1,000,000
8,000 shplan 2026-03-06Form 4s on file end Jun 23144 ↗
2026-07-06Atay Oguzhan, See Remarks$1,525,646
12,500 shplan 2026-03-07Form 4s on file end Jun 23144 ↗
2026-07-06Atay Oguzhan, See Remarks$3,150,000
26,250 shplan 2026-03-06Form 4s on file end Jun 23144 ↗
2026-07-06Atay Oguzhan, See Remarks$300,000
2,500 shplan 2026-03-06Form 4s on file end Jun 23144 ↗
2026-07-01Johnson Nancy JoAnn, See Remarks$100,056
801 shplan 2026-03-06Form 4s on file end Jun 23144 ↗
2026-06-29ten Bosch John Roderick, See Remarks$169,920
1,416 shplan 2026-03-06Form 4s on file end Jun 23144 ↗
2026-06-24Sakakibara Shan Riku, Chief Product Officer$880,000
8,000 shplan 2026-03-06144 ↗
Form 4, 2026-06-26: sold 8,000 at $110.00 Form 4 ↗
2026-06-15Tsao David, Chief Technology Officer$2,045,325
20,000 shplan 2026-03-06144 ↗
Form 4, 2026-06-17: sold 20,000 at $102.26 Form 4 ↗
2026-06-15Tsao David, Chief Technology Officer$355,145
3,500 shplan 2026-03-06Form 4s on file end Jun 23144 ↗
2026-06-15ten Bosch John Roderick, See Remarks$287,363
2,832 shplan 2026-03-06144 ↗
Form 4, 2026-06-17: sold 2,832 at $101.47 Form 4 ↗
2026-06-09Johnson Nancy JoAnn, See Remarks$1,063,193
10,582 shplan 2026-03-06Form 4s on file end Jun 23144 ↗
2026-06-08Johnson Nancy JoAnn, See Remarks$339,347
3,418 shplan 2026-03-06144 ↗
Form 4, 2026-06-10: sold 14,000 at $100.18 Form 4 ↗
2026-06-08Atay Oguzhan, See Remarks$2,563,633
26,250 shplan 2026-03-06144 ↗
Form 4, 2026-06-10: sold 38,750 at $97.84 Form 4 ↗
2026-06-08Sakakibara Shan Riku, Chief Product Officer$785,800
8,000 shplan 2026-03-06144 ↗
Form 4, 2026-06-10: sold 8,000 at $98.22 Form 4 ↗
2026-06-08Atay Oguzhan, See Remarks$245,563
2,500 shplan 2026-03-06Form 4s on file end Jun 23144 ↗
2026-06-08Atay Oguzhan, See Remarks$1,227,813
12,500 shplan 2026-03-07Form 4s on file end Jun 23144 ↗