Insiders · BLLN

BLLN insider transactions

BillionToOne Inc. (BLLN) Form 4 insider transactions - real-time wire coverage of every officer, director, and 10% owner trade.

BLLN insiders

Everyone who has filed a Form 3, 4, 5 or 144 at BillionToOne Inc., latest first. Follow anyone to get their next filing.

• David TsaoChief Technology Officer, Director-$11M
• Oguzhan AtayChairman and CEO, Director-$23M
• ten Bosch John RoderickSVP of Laboratory Operations-$1.72M
• Thomas P. LynchOfficer-$5.87M
• Shan Riku SakakibaraChief Product Officer-$3.23M
• Krishna Kittu KolluriDirector
• Nancy JoAnn JohnsonOfficer-$3.32M
• Thomas S BremnerDirector
• Firat IleriDirector, 10% owner
• Anthony PaganoDirector, since January 2026
• Akshay RaiDirector
• NeoTribe Ventures I, L.P.10% owner
• Humming Bird Ventures Management NV10% owner, since November 2025

Recent Form 3, 4, and 5 filings for BLLN

• 4d
  SEC Form 4 filed by BillionToOne Inc.

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 4d
  SEC Form 4 filed by BillionToOne Inc.

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 4d
  Chief Technology Officer Tsao David exercised 20,000 shares at a strike of $2.80 and sold $2,184,854 worth of shares (20,000 units at $109.24) as part of a pre-agreed trading plan (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 9d
  Chairman and CEO Atay Oguzhan sold $1,298,000 worth of shares (11,000 units at $118.00) as part of a pre-agreed trading plan (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 9d
  SEC Form 3 filed by BillionToOne Inc.

  3 - BillionToOne, Inc. (0002070849) (Issuer)
• 20d
  SEC Form 4 filed by BillionToOne Inc.

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 23d
  Chairman and CEO Atay Oguzhan sold $1,090,575 worth of shares (11,000 units at $99.14) as part of a pre-agreed trading plan (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 25d
  Chairman and CEO Atay Oguzhan sold $1,823,450 worth of shares (19,334 units at $94.31) as part of a pre-agreed trading plan (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 26d
  SEC Form 4 filed by BillionToOne Inc.

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 32d
  SVP of Laboratory Operations Ten Bosch John Roderick sold $297,995 worth of shares (2,834 units at $105.15) as part of a pre-agreed trading plan (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 32d
  Chief Technology Officer Tsao David sold $2,162,950 worth of shares (20,000 units at $108.15) as part of a pre-agreed trading plan (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 39d
  Chairman and CEO Atay Oguzhan exercised 8,333 shares at a strike of $2.80 and sold $1,326,919 worth of shares (10,999 units at $120.64) as part of a pre-agreed trading plan (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 41d
  Chief Technology Officer Tsao David exercised 3,333 shares at a strike of $2.80 and sold $416,625 worth of shares (3,333 units at $125.00) as part of a pre-agreed trading plan (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 41d
  SVP of Laboratory Operations Ten Bosch John Roderick sold $169,920 worth of shares (1,416 units at $120.00) as part of a pre-agreed trading plan, decreasing direct ownership by 6% to 22,219 units (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 46d
  SVP of Laboratory Operations Ten Bosch John Roderick sold $150,960 worth of shares (1,416 units at $106.61) as part of a pre-agreed trading plan, decreasing direct ownership by 6% to 23,635 units (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 48d
  Officer Lynch Thomas P. exercised 35,112 shares at a strike of $13.61 and sold $3,873,966 worth of shares (35,112 units at $110.33) as part of a pre-agreed trading plan (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 53d
  Chairman and CEO Atay Oguzhan exercised 24,999 shares at a strike of $2.80 and sold $3,030,444 worth of shares (30,331 units at $99.91) as part of a pre-agreed trading plan (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 55d
  Chief Product Officer Sakakibara Shan Riku gifted 3,500 shares, decreasing direct ownership by 2% to 196,500 units (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 58d
  SVP of Laboratory Operations Ten Bosch John Roderick sold $138,117 worth of shares (1,416 units at $97.54) as part of a pre-agreed trading plan, decreasing direct ownership by 5% to 25,051 units (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 58d
  Chief Technology Officer Tsao David sold $1,975,400 worth of shares (20,000 units at $98.77) as part of a pre-agreed trading plan and exercised 20,000 shares at a strike of $2.80 (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 59d
  Officer Lynch Thomas P. exercised 20,000 shares at a strike of $13.61 and sold $1,999,880 worth of shares (20,000 units at $99.99) as part of a pre-agreed trading plan (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 59d
  Chairman and CEO Atay Oguzhan converted options into 20,000 shares and gifted 20,000 shares (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 61d
  Chief Technology Officer Tsao David converted options into 20,000 shares and gifted 20,000 shares (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 72d
  Director Kolluri Krishna Kittu disposed of 484,442 shares and acquired 78,244 shares (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 73d
  SVP of Laboratory Operations Ten Bosch John Roderick sold $141,700 worth of shares (1,417 units at $100.00) as part of a pre-agreed trading plan, decreasing direct ownership by 5% to 26,467 units (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 73d
  Chief Technology Officer Tsao David exercised 10,000 shares at a strike of $2.80 and sold $1,000,000 worth of shares (10,000 units at $100.00) as part of a pre-agreed trading plan (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 88d
  SVP of Laboratory Operations Ten Bosch John Roderick sold $131,583 worth of shares (1,417 units at $92.86) as part of a pre-agreed trading plan, decreasing direct ownership by 5% to 27,884 units (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 88d
  Chief Technology Officer Tsao David exercised 10,000 shares at a strike of $2.80 and sold $928,600 worth of shares (10,000 units at $92.86) as part of a pre-agreed trading plan (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 93d
  Chairman and CEO Atay Oguzhan exercised 15,539 shares at a strike of $2.80 and sold $2,331,352 worth of shares (15,539 units at $150.03) as part of a pre-agreed trading plan (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 95d
  Chairman and CEO Atay Oguzhan exercised 32,500 shares at a strike of $2.80 and sold $6,167,960 worth of shares (45,000 units at $137.07) as part of a pre-agreed trading plan (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 96d
  Chief Product Officer Sakakibara Shan Riku sold $560,840 worth of shares (4,000 units at $140.21) as part of a pre-agreed trading plan, decreasing direct ownership by 2% to 200,000 units (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 111d
  Officer Johnson Nancy Joann sold $1,821,628 worth of shares (14,199 units at $128.29) as part of a pre-agreed trading plan, decreasing direct ownership by 67% to 6,900 units (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 116d
  SVP of Laboratory Operations Ten Bosch John Roderick sold $533,330 worth of shares (4,251 units at $125.46) as part of a pre-agreed trading plan, decreasing direct ownership by 13% to 29,301 units (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 116d
  Chief Technology Officer Tsao David exercised 20,000 shares at a strike of $2.80 and sold $2,497,698 worth of shares (20,000 units at $124.88) as part of a pre-agreed trading plan (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 118d
  Chairman and CEO Atay Oguzhan exercised 12,500 shares at a strike of $2.80 and sold $1,576,276 worth of shares (12,500 units at $126.10) as part of a pre-agreed trading plan (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 118d
  Chief Product Officer Sakakibara Shan Riku exercised 4,000 shares at a strike of $29.82 and sold $1,000,000 worth of shares (8,000 units at $125.00) as part of a pre-agreed trading plan, decreasing direct ownership by 2% to 204,000 units (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 123d
  Chairman and CEO Atay Oguzhan exercised 26,250 shares at a strike of $2.80 and sold $4,729,379 worth of shares (38,750 units at $122.05) as part of a pre-agreed trading plan (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 125d
  Officer Johnson Nancy Joann sold $100,056 worth of shares (801 units at $124.91) as part of a pre-agreed trading plan, decreasing direct ownership by 4% to 21,099 units (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 130d
  SVP of Laboratory Operations Ten Bosch John Roderick sold $169,920 worth of shares (1,416 units at $120.00) as part of a pre-agreed trading plan, decreasing direct ownership by 4% to 33,552 units (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 135d
  Chief Product Officer Sakakibara Shan Riku exercised 4,000 shares at a strike of $8.65 and sold $880,000 worth of shares (8,000 units at $110.00) as part of a pre-agreed trading plan, decreasing direct ownership by 2% to 208,000 units (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 144d
  Officer Ten Bosch John Roderick sold $287,363 worth of shares (2,832 units at $101.47) as part of a pre-agreed trading plan, decreasing direct ownership by 7% to 34,968 units (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 144d
  Chief Technology Officer Tsao David exercised 20,000 shares at a strike of $2.80 and sold $2,045,326 worth of shares (20,000 units at $102.27) as part of a pre-agreed trading plan (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 149d
  Director Bremner Thomas S was granted 3,017 shares, increasing direct ownership by 36% to 11,350 units (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 149d
  Director Kolluri Krishna Kittu was granted 3,017 shares, increasing direct ownership by 36% to 11,350 units (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 149d
  Director Ileri Firat was granted 3,017 shares, increasing direct ownership by 8% to 40,331 units (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 149d
  Director Pagano Anthony was granted 3,017 shares, increasing direct ownership by 62% to 7,913 units (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 149d
  Director Rai Akshay was granted 3,017 shares, increasing direct ownership by 27% to 14,026 units (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 150d
  Large owner Neotribe Ventures I, L.P. acquired 14,828 shares and disposed of 450,779 shares (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 150d
  Director Kolluri Krishna Kittu disposed of 450,779 shares and acquired 31,028 shares (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 151d
  Chief Product Officer Sakakibara Shan Riku sold $785,800 worth of shares (8,000 units at $98.22) as part of a pre-agreed trading plan, decreasing direct ownership by 4% to 212,000 units (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 151d
  Officer Johnson Nancy Joann sold $1,402,540 worth of shares (14,000 units at $100.18) as part of a pre-agreed trading plan, decreasing direct ownership by 39% to 21,900 units (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 151d
  Officer Atay Oguzhan exercised 26,250 shares at a strike of $2.80, sold $3,791,445 worth of shares (38,750 units at $97.84) as part of a pre-agreed trading plan, converted options into 10,000 shares and gifted 10,000 shares (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 179d
  Large owner Neotribe Ventures I, L.P. disposed of 450,779 shares and acquired 14,828 shares (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 179d
  Director Kolluri Krishna Kittu disposed of 450,779 shares and acquired 31,028 shares (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 292d
  Large owner Humming Bird Ventures Management Nv disposed of 7,887,187 shares, acquired 7,887,187 shares and converted options into 7,707,188 shares (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 292d
  New insider Humming Bird Ventures Management Nv claimed ownership of 179,999 shares (SEC Form 3)

  3 - BillionToOne, Inc. (0002070849) (Issuer)
• 307d
  Director Pagano Anthony was granted 4,896 shares (SEC Form 4)

  4 - BillionToOne, Inc. (0002070849) (Issuer)
• 307d
  SEC Form 3 filed by new insider Pagano Anthony

  3 - BillionToOne, Inc. (0002070849) (Issuer)