Oguzhan Atay

Companies

• BillionToOne (United States)Chief executive officer Jul 8, 2026 to now¹
• BillionToOne (United States)Chair Jul 8, 2026 to now¹
• BillionToOne (United States)Board member Nov 5, 2025 to now²
• BillionToOne (United States)Officer Nov 5, 2025 to now²

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• BillionToOne (United States) BLLN154,502 shares³$15.7M at $101.59Sep 28, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• Sep 28, 2026Sold 2,666 shares at $120.64 of BillionToOne (United States)³
• Sep 28, 2026Sold 8,333 shares at $120.64 of BillionToOne (United States)³
• Sep 28, 2026Exercised options 8,333 shares at $2.80 of BillionToOne (United States)³
• Sep 14, 2026Sold 2,666 shares at $98.00 of BillionToOne (United States)⁴
• Sep 14, 2026Sold 2,666 shares at $98.00 of BillionToOne (United States)⁴
• Sep 14, 2026Sold 3,143 shares at $101.49 of BillionToOne (United States)⁴
• Sep 14, 2026Sold 2,010 shares at $100.78 of BillionToOne (United States)⁴
• Sep 14, 2026Sold 1,500 shares at $99.57 of BillionToOne (United States)⁴
• Sep 14, 2026Sold 1,680 shares at $98.64 of BillionToOne (United States)⁴
• Sep 14, 2026Sold 7,214 shares at $101.44 of BillionToOne (United States)⁴
• Sep 14, 2026Sold 2,531 shares at $100.58 of BillionToOne (United States)⁴
• Sep 14, 2026Sold 2,456 shares at $99.57 of BillionToOne (United States)⁴
• Sep 14, 2026Sold 4,465 shares at $98.63 of BillionToOne (United States)⁴
• Sep 14, 2026Exercised options 8,333 shares at $2.80 of BillionToOne (United States)⁴
• Sep 14, 2026Exercised options 16,666 shares at $2.80 of BillionToOne (United States)⁴
• Sep 9, 2026Gift 20,000 shares of BillionToOne (United States)⁵
• Sep 8, 2026Converted 20,000 shares of BillionToOne (United States)⁵
• Aug 5, 2026Sold 15,539 shares at $150.03 of BillionToOne (United States)⁶
• Aug 5, 2026Exercised options 15,539 shares at $2.80 of BillionToOne (United States)⁶
• Aug 3, 2026Sold 6,250 shares at $137.37 of BillionToOne (United States)⁷
• Aug 3, 2026Sold 6,250 shares at $137.37 of BillionToOne (United States)⁷
• Aug 3, 2026Sold 82 shares at $139.20 of BillionToOne (United States)⁷
• Aug 3, 2026Sold 760 shares at $138.09 of BillionToOne (United States)⁷
• Aug 3, 2026Sold 3,125 shares at $137.25 of BillionToOne (United States)⁷
• Aug 3, 2026Sold 1,983 shares at $136.42 of BillionToOne (United States)⁷