William D. Baird Iii.

Companies

• 2seventy bio, Inc.Board member Apr 3, 2024 to now¹
• 2seventy bio, Inc.Chief executive officer Apr 3, 2024 to now¹
• 2seventy bio, Inc.President Apr 3, 2024 to now¹
• 2seventy bio, Inc.Chief operating officer Jan 5, 2024 to Mar 19, 2025²
• 2seventy bio, Inc.Chief financial officer Oct 18, 2021 to Aug 24, 2023³
• Axcella Health (United States)Board member May 8, 2019 to May 23, 2022⁴
• bluebird bioChief financial officer Feb 12, 2019 to Nov 17, 2021⁵
• Amicus TherapeuticsChief financial officer Apr 19, 2012 to Oct 17, 2018⁶

Holdings

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

Shares held

• BBbluebird bio BLUE22,797 shares⁷Nov 11, 2021
• 2B2seventy bio, Inc.0 shares⁸May 13, 2025

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

Recent filings

• May 13, 2025U 118,209 shares of 2seventy bio, Inc.⁸
• May 13, 2025Returned to company 1,002,825 shares of 2seventy bio, Inc.⁸
• Mar 17, 2025Sold 5,092 shares at $4.95 of 2seventy bio, Inc.⁹
• Jan 6, 2025Sold 763 shares at $2.78 of 2seventy bio, Inc.¹⁰
• Jan 6, 2025Granted 264,000 shares of 2seventy bio, Inc.¹¹
• Jan 3, 2025Sold 31,718 shares at $2.94 of 2seventy bio, Inc.¹⁰
• Jul 1, 2024Granted 586,022 shares of 2seventy bio, Inc.¹²
• Apr 1, 2024Granted 56,250 shares of 2seventy bio, Inc.¹³
• Jan 8, 2024Granted 91,000 shares of 2seventy bio, Inc.¹⁴
• Jan 5, 2024Sold 1,380 shares at $3.75 of 2seventy bio, Inc.¹⁴
• Jan 3, 2024Sold 33,651 shares at $3.87 of 2seventy bio, Inc.¹⁵
• Aug 22, 2023Sold 7,031 shares at $5.49 of 2seventy bio, Inc.¹⁶
• Aug 3, 2023Sold 6,906 shares at $6.13 of 2seventy bio, Inc.¹⁷
• Feb 13, 2023Sold 637 shares at $12.86 of 2seventy bio, Inc.¹⁸
• Feb 1, 2023Granted 107,143 shares of 2seventy bio, Inc.¹⁹
• Feb 1, 2023Granted 25,000 shares of 2seventy bio, Inc.¹⁹
• Jan 11, 2023Sold 1,077 shares at $10.63 of 2seventy bio, Inc.²⁰
• Jan 9, 2023Sold 3,222 shares at $10.33 of 2seventy bio, Inc.²¹
• Aug 5, 2022Sold 4,152 shares at $16.23 of 2seventy bio, Inc.²²
• Jul 15, 2022Sold 4,080 shares at $13.81 of 2seventy bio, Inc.²³
• Mar 1, 2022Granted 33,750 shares of 2seventy bio, Inc.²⁴
• Feb 17, 2022Sold 427 shares at $14.78 of 2seventy bio, Inc.²⁵
• Jan 7, 2022Sold 896 shares at $23.91 of 2seventy bio, Inc.²⁶
• Nov 11, 2021Other of bluebird bio⁷
• Nov 11, 2021Granted 21,627 shares of 2seventy bio, Inc.²⁷