BLLN · ISSUER CIK 2070849
BillionToOne, Inc.
Between Aug 1, 2026 and Oct 29, 2026, 6 BillionToOne, Inc. insiders reported $0.00 of open-market purchases and $29.7M of sales on SEC Form 4.
↗6 insiders filed
Original Form 4 filings from Aug 1, 2026 to Oct 29, 2026. 20 of 20 sales were reported under a 10b5-1 plan.
$0.00Insider buying
$29.7MInsider selling
−$29.7MNet open-market
Oct 19, 2026Latest filing
| Ticker | Insider | Type | Owned | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 19, 202619:35 | Oct 13, 2026 | BLLN | See Remarks | M · ExerciseLate 6d | $8.65 | +2,000 | 10,700 | +23% | $17K | ||
| Oct 16, 202619:00 | Oct 15, 2026from Oct 14, 2026 | BLLN | Chairman and CEO, Director | S · Sell10b5-1 | $99.14 | −11,000 | 0 | -100% | −$1.1M | ||
| Oct 16, 202619:00 | Oct 15, 2026from Oct 14, 2026 | BLLN | Chairman and CEO, Director | M · Exercise10b5-1 | $2.80 | +8,333 | 5,150 | — | $23K | ||
| Oct 14, 202618:10 | Oct 12, 2026 | BLLN | Chairman and CEO, Director | S · Sell10b5-1 | $94.31 | −19,334 | 0 | -100% | −$1.8M | ||
| Oct 14, 202618:10 | Oct 12, 2026 | BLLN | Chairman and CEO, Director | M · Exercise10b5-1 | $2.80 | +16,667 | 16,667 | New | $47K | ||
| Oct 13, 202618:39 | Oct 8, 2026 | BLLN | See Remarks | M · ExerciseLate 5d | $8.65 | +8,000 | 8,700 | +1143% | $69K | ||
| Oct 7, 202619:56 | Oct 5, 2026 | BLLN | SVP of Laboratory Operations | S · Sell10b5-1 | $105.15 | −2,834 | 19,385 | -13% | −$298K | ||
| Oct 7, 202619:56 | Oct 5, 2026 | BLLN | Chief Technology Officer, Director | S · Sell10b5-1 | $108.15 | −20,000 | 1,000 | -95% | −$2.2M | ||
| Oct 7, 202619:56 | Oct 5, 2026 | BLLN | Chief Technology Officer, Director | M · Exercise10b5-1 | $2.80 | +20,000 | 21,000 | +2000% | $56K | ||
| Sep 30, 202620:33 | Sep 28, 2026 | BLLN | Chairman and CEO, Director | S · Sell10b5-1 | $120.64 | −10,999 | 0 | -100% | −$1.3M | ||
| Sep 30, 202620:33 | Sep 28, 2026 | BLLN | Chairman and CEO, Director | M · Exercise10b5-1 | $2.80 | +8,333 | 8,333 | New | $23K | ||
| Sep 28, 202617:57 | Sep 24, 2026 | BLLN | Chief Technology Officer, Director | S · Sell10b5-1 | $125.00 | −3,333 | 1,000 | -77% | −$417K | ||
| Sep 28, 202617:57 | Sep 24, 2026 | BLLN | Chief Technology Officer, Director | M · Exercise10b5-1 | $2.80 | +3,333 | 4,333 | +333% | $9K | ||
| Sep 28, 202617:56 | Sep 24, 2026 | BLLN | SVP of Laboratory Operations | S · Sell10b5-1 | $120.00 | −1,416 | 22,219 | -6% | −$170K | ||
| Sep 23, 202617:50 | Sep 21, 2026 | BLLN | SVP of Laboratory Operations | S · Sell10b5-1 | $106.61 | −1,416 | 23,635 | -6% | −$151K | ||
| Sep 21, 202619:00 | Sep 17, 2026 | BLLN | See Remarks | S · Sell10b5-1 | $110.33 | −35,112 | 700 | -98% | −$3.9M | ||
| Sep 21, 202619:00 | Sep 17, 2026 | BLLN | See Remarks | M · Exercise10b5-1 | $13.61 | +35,112 | 35,812 | +5016% | $478K | ||
| Sep 16, 202618:43 | Sep 14, 2026 | BLLN | Chairman and CEO, Director | S · Sell10b5-1 | $99.91 | −30,331 | 0 | -100% | −$3.0M | ||
| Sep 16, 202618:43 | Sep 14, 2026 | BLLN | Chairman and CEO, Director | M · Exercise10b5-1 | $2.80 | +24,999 | 24,999 | New | $70K | ||
| Sep 14, 202618:47 | Sep 10, 2026 | BLLN | Chief Product Officer | G · Gift | — | −3,500 | 196,500 | -2% | — | ||
| Sep 11, 202618:01 | Sep 9, 2026 | BLLN | SVP of Laboratory Operations | S · Sell10b5-1 | $97.54 | −1,416 | 25,051 | -5% | −$138K | ||
| Sep 11, 202618:01 | Sep 9, 2026 | BLLN | Chief Technology Officer, Director | S · Sell10b5-1 | $98.77 | −20,000 | 1,000 | -95% | −$2.0M | ||
| Sep 11, 202618:01 | Sep 9, 2026 | BLLN | Chief Technology Officer, Director | M · Exercise10b5-1 | $2.80 | +20,000 | 21,000 | +2000% | $56K | ||
| Sep 10, 202619:44 | Sep 8, 2026 | BLLN | See Remarks | S · Sell10b5-1 | $99.99 | −20,000 | 700 | -97% | −$2.0M | ||
| Sep 10, 202619:44 | Sep 8, 2026 | BLLN | See Remarks | M · Exercise10b5-1 | $13.61 | +20,000 | 20,700 | +2857% | $272K | ||
| Sep 10, 202619:44 | Sep 9, 2026 | BLLN | Chairman and CEO, Director | G · Gift | — | −20,000 | 0 | -100% | — | ||
| Sep 10, 202619:44 | Sep 8, 2026 | BLLN | Chairman and CEO, Director | C · Convert | — | +20,000 | 20,000 | New | — | ||
| Sep 8, 202621:55 | Sep 8, 2026 | BLLN | Chief Technology Officer, Director | G · Gift | — | −20,000 | 1,000 | -95% | — | ||
| Sep 8, 202621:55 | Sep 3, 2026 | BLLN | Chief Technology Officer, Director | C · ConvertLate 5d | — | +20,000 | 21,000 | +2000% | — | ||
| Aug 28, 202616:20 | Aug 26, 2026 | BLLN | Director | J · Other | — | −484,442 | 76,441 | -86% | — | ||
| Aug 28, 202616:20 | Aug 26, 2026 | BLLN | Director | J · Other | — | +78,244 | 57,839 | — | — | ||
| Aug 27, 202620:19 | Aug 25, 2026 | BLLN | Chief Technology Officer, Director | S · Sell10b5-1 | $100.00 | −10,000 | 1,000 | -91% | −$1.0M | ||
| Aug 27, 202620:19 | Aug 25, 2026 | BLLN | Chief Technology Officer, Director | M · Exercise10b5-1 | $2.80 | +10,000 | 11,000 | +1000% | $28K | ||
| Aug 27, 202620:19 | Aug 25, 2026 | BLLN | SVP of Laboratory Operations | S · Sell10b5-1 | $100.00 | −1,417 | 26,467 | -5% | −$142K | ||
| Aug 12, 202618:55 | Aug 10, 2026 | BLLN | SVP of Laboratory Operations | S · Sell10b5-1 | $92.86 | −1,417 | 27,884 | -5% | −$132K | ||
| Aug 12, 202618:51 | Aug 10, 2026 | BLLN | Chief Technology Officer, Director | S · Sell10b5-1 | $92.86 | −10,000 | 1,000 | -91% | −$929K | ||
| Aug 12, 202618:51 | Aug 10, 2026 | BLLN | Chief Technology Officer, Director | M · Exercise10b5-1 | $2.80 | +10,000 | 11,000 | +1000% | $28K | ||
| Aug 7, 202616:02 | Aug 5, 2026 | BLLN | Chairman and CEO, Director | S · Sell10b5-1 | $150.03 | −15,539 | 0 | -100% | −$2.3M | ||
| Aug 7, 202616:02 | Aug 5, 2026 | BLLN | Chairman and CEO, Director | M · Exercise10b5-1 | $2.80 | +15,539 | 15,539 | New | $44K | ||
| Aug 5, 202620:52 | Aug 3, 2026 | BLLN | Chairman and CEO, Director | S · Sell10b5-1 | $137.07 | −45,000 | 0 | -100% | −$6.2M | ||
| Aug 5, 202620:52 | Aug 3, 2026 | BLLN | Chairman and CEO, Director | M · Exercise10b5-1 | $2.80 | +32,500 | 32,500 | New | $91K | ||
| Aug 4, 202616:32 | Jul 31, 2026 | BLLN | Chief Product Officer | S · Sell10b5-1 | $140.21 | −4,000 | 200,000 | -2% | −$561K |