$GBIO

📈 Chart

158 transactions across 7 dates · last 365 days

2026-02-09
98 other
⚡ 13 insiders
Insider Title Type Shares Price $ Value 10b5-1 Filed
Atlas Venture Fund X, L.P. U 711,193 Feb 9
Atlas Venture Fund X, L.P. U 116,693 Feb 9
Atlas Venture Fund X, L.P. U 60 Feb 9
Appelhans Dannielle U 1,263 Feb 9
Appelhans Dannielle U 736 Feb 9
Appelhans Dannielle D 3,000 Feb 9
Appelhans Dannielle D 3,840 Feb 9
Appelhans Dannielle D 2,500 Feb 9
Appelhans Dannielle D 6,000 Feb 9
Christensen Gustav U 13,142 Feb 9
Christensen Gustav D 3,000 Feb 9
Christensen Gustav D 5,200 Feb 9
Christensen Gustav D 1,500 Feb 9
Christensen Gustav D 1,920 Feb 9
Christensen Gustav D 2,500 Feb 9
Christensen Gustav D 6,000 Feb 9
Conway Kevin John CHIEF FINANCIAL OFFICER U 2,072 Feb 9
Conway Kevin John CHIEF FINANCIAL OFFICER D 1,192 Feb 9
Conway Kevin John CHIEF FINANCIAL OFFICER D 283 Feb 9
Conway Kevin John CHIEF FINANCIAL OFFICER D 1,061 Feb 9
Conway Kevin John CHIEF FINANCIAL OFFICER D 621 Feb 9
Conway Kevin John CHIEF FINANCIAL OFFICER D 1,399 Feb 9
Conway Kevin John CHIEF FINANCIAL OFFICER D 2,585 Feb 9
Conway Kevin John CHIEF FINANCIAL OFFICER D 2,800 Feb 9
Conway Kevin John CHIEF FINANCIAL OFFICER D 5,940 Feb 9
Conway Kevin John CHIEF FINANCIAL OFFICER D 200 Feb 9
Conway Kevin John CHIEF FINANCIAL OFFICER D 249 Feb 9
Conway Kevin John CHIEF FINANCIAL OFFICER D 35,525 Feb 9
Conway Kevin John CHIEF FINANCIAL OFFICER D 1,877 Feb 9
Conway Kevin John CHIEF FINANCIAL OFFICER D 550 Feb 9
Conway Kevin John CHIEF FINANCIAL OFFICER D 1,763 Feb 9
Cooper Ronald Harold Wilfred U 950 Feb 9
Cooper Ronald Harold Wilfred D 3,000 Feb 9
Cooper Ronald Harold Wilfred D 3,000 Feb 9
Cooper Ronald Harold Wilfred D 1,920 Feb 9
Cooper Ronald Harold Wilfred D 2,500 Feb 9
Cooper Ronald Harold Wilfred D 6,000 Feb 9
Howze Yalonda INTERIM CEO AND PRESIDENT U 3,759 Feb 9
Howze Yalonda INTERIM CEO AND PRESIDENT D 10,710 Feb 9
Howze Yalonda INTERIM CEO AND PRESIDENT D 11,883 Feb 9
Howze Yalonda INTERIM CEO AND PRESIDENT D 25,102 Feb 9
Howze Yalonda INTERIM CEO AND PRESIDENT D 7,630 Feb 9
JONAS JEFFREY M D 3,000 Feb 9
JONAS JEFFREY M D 4,246 Feb 9
JONAS JEFFREY M D 5,200 Feb 9
JONAS JEFFREY M D 1,500 Feb 9
JONAS JEFFREY M D 1,920 Feb 9
JONAS JEFFREY M D 2,500 Feb 9
JONAS JEFFREY M D 6,000 Feb 9
MCDONOUGH GEOFF U 138,492 Feb 9
MCDONOUGH GEOFF U 22,646 Feb 9
MCDONOUGH GEOFF U 27,500 Feb 9
MCDONOUGH GEOFF D 19,903 Feb 9
MCDONOUGH GEOFF D 25,099 Feb 9
MCDONOUGH GEOFF D 37,499 Feb 9
MCDONOUGH GEOFF D 50,624 Feb 9
MCDONOUGH GEOFF D 90,168 Feb 9
MCDONOUGH GEOFF D 16,874 Feb 9
MCDONOUGH GEOFF D 24,046 Feb 9
Nicholson Donald William U 21,357 Feb 9
Nicholson Donald William D 3,000 Feb 9
Nicholson Donald William D 5,200 Feb 9
Nicholson Donald William D 1,500 Feb 9
Nicholson Donald William D 1,920 Feb 9
Nicholson Donald William D 2,500 Feb 9
Nicholson Donald William D 6,000 Feb 9
Quinn Anthony G. U 29,928 Feb 9
Quinn Anthony G. U 7,283 Feb 9
Quinn Anthony G. D 3,000 Feb 9
Quinn Anthony G. D 5,200 Feb 9
Quinn Anthony G. D 1,500 Feb 9
Quinn Anthony G. D 1,920 Feb 9
Quinn Anthony G. D 2,500 Feb 9
Quinn Anthony G. D 6,000 Feb 9
Rhodes Jason P U 711,193 Feb 9
Rhodes Jason P U 116,693 Feb 9
Rhodes Jason P U 60 Feb 9
Rhodes Jason P D 3,000 Feb 9
Rhodes Jason P D 5,200 Feb 9
Rhodes Jason P D 1,500 Feb 9
Rhodes Jason P D 1,920 Feb 9
Rhodes Jason P D 2,500 Feb 9
Rhodes Jason P D 6,000 Feb 9
Rowland Charles A Jr U 53,475 Feb 9
Rowland Charles A Jr D 3,000 Feb 9
Rowland Charles A Jr D 4,246 Feb 9
Rowland Charles A Jr D 5,200 Feb 9
Rowland Charles A Jr D 1,500 Feb 9
Rowland Charles A Jr D 1,920 Feb 9
Rowland Charles A Jr D 2,500 Feb 9
Rowland Charles A Jr D 6,000 Feb 9
Stehman-Breen Catherine U 4,752 Feb 9
Stehman-Breen Catherine D 3,000 Feb 9
Stehman-Breen Catherine D 5,200 Feb 9
Stehman-Breen Catherine D 1,500 Feb 9
Stehman-Breen Catherine D 1,920 Feb 9
Stehman-Breen Catherine D 2,500 Feb 9
Stehman-Breen Catherine D 6,000 Feb 9
2026-02-02
9 other
⚡ 3 insiders
Insider Title Type Shares Price $ Value 10b5-1 Filed
Conway Kevin John Chief Financial Officer M 235 Feb 4
Conway Kevin John Chief Financial Officer F 72 $6 $406 Feb 4
Conway Kevin John Chief Financial Officer M 235 $0 $0 Feb 4
MCDONOUGH GEOFF M 1,582 Feb 4
MCDONOUGH GEOFF F 550 $6 $3K Feb 4
MCDONOUGH GEOFF M 1,582 $0 $0 Feb 4
Howze Yalonda INTERIM CEO & PRESIDENT M 1,673 Feb 4
Howze Yalonda INTERIM CEO & PRESIDENT F 495 $6 $3K Feb 4
Howze Yalonda INTERIM CEO & PRESIDENT M 1,673 $0 $0 Feb 4
2026-01-15
9 other
⚡ 3 insiders
Insider Title Type Shares Price $ Value 10b5-1 Filed
Conway Kevin John Chief Financial Officer M 59 Jan 16
Conway Kevin John Chief Financial Officer F 17 $6 $96 Jan 16
Conway Kevin John Chief Financial Officer M 59 $0 $0 Jan 16
MCDONOUGH GEOFF M 395 Jan 16
MCDONOUGH GEOFF F 137 $6 $773 Jan 16
MCDONOUGH GEOFF M 395 $0 $0 Jan 16
Howze Yalonda CHIEF LEGAL OFFICER M 335 Jan 16
Howze Yalonda CHIEF LEGAL OFFICER F 99 $6 $558 Jan 16
Howze Yalonda CHIEF LEGAL OFFICER M 335 $0 $0 Jan 16
2025-10-31
3 other
Insider Title Type Shares Price $ Value 10b5-1 Filed
MCDONOUGH GEOFF M 659 Nov 21
MCDONOUGH GEOFF F 293 $6 $2K Nov 21
MCDONOUGH GEOFF M 659 $0 $0 Nov 21
2025-10-15
15 other
⚡ 5 insiders
Insider Title Type Shares Price $ Value 10b5-1 Filed
Conway Kevin John Chief Financial Officer M 58 Oct 17
Conway Kevin John Chief Financial Officer F 18 $7 $121 Oct 17
Conway Kevin John Chief Financial Officer M 58 $0 $0 Oct 17
MCDONOUGH GEOFF PRESIDENT AND CEO M 527 Oct 17
MCDONOUGH GEOFF PRESIDENT AND CEO F 155 $7 $1K Oct 17
MCDONOUGH GEOFF PRESIDENT AND CEO M 527 $0 $0 Oct 17
Howze Yalonda CHIEF LEGAL OFFICER M 334 Oct 17
Howze Yalonda CHIEF LEGAL OFFICER F 99 $7 $664 Oct 17
Howze Yalonda CHIEF LEGAL OFFICER M 334 $0 $0 Oct 17
Paone Antoinette CHIEF OPERATING OFFICER M 159 Oct 17
Paone Antoinette CHIEF OPERATING OFFICER F 47 $7 $315 Oct 17
Paone Antoinette CHIEF OPERATING OFFICER M 159 $0 $0 Oct 17
Samayoa Phillip CHIEF SCIENTIFIC OFFICER M 114 Oct 17
Samayoa Phillip CHIEF SCIENTIFIC OFFICER F 34 $7 $228 Oct 17
Samayoa Phillip CHIEF SCIENTIFIC OFFICER M 114 $0 $0 Oct 17
2025-07-15
15 other
⚡ 5 insiders
Insider Title Type Shares Price $ Value 10b5-1 Filed
Conway Kevin John Chief Financial Officer M 587 Jul 17
Conway Kevin John Chief Financial Officer F 173 $0 $74 Jul 17
Conway Kevin John Chief Financial Officer M 587 $0 $0 Jul 17
MCDONOUGH GEOFF PRESIDENT AND CEO M 5,273 Jul 17
MCDONOUGH GEOFF PRESIDENT AND CEO F 1,548 $0 $659 Jul 17
MCDONOUGH GEOFF PRESIDENT AND CEO M 5,273 $0 $0 Jul 17
Samayoa Phillip CHIEF SCIENTIFIC OFFICER M 1,147 Jul 17
Samayoa Phillip CHIEF SCIENTIFIC OFFICER F 337 $0 $144 Jul 17
Samayoa Phillip CHIEF SCIENTIFIC OFFICER M 1,147 $0 $0 Jul 17
Paone Antoinette CHIEF OPERATING OFFICER M 1,592 Jul 17
Paone Antoinette CHIEF OPERATING OFFICER F 468 $0 $199 Jul 17
Paone Antoinette CHIEF OPERATING OFFICER M 1,592 $0 $0 Jul 17
Howze Yalonda CHIEF LEGAL OFFICER M 3,347 Jul 17
Howze Yalonda CHIEF LEGAL OFFICER F 983 $0 $419 Jul 17
Howze Yalonda CHIEF LEGAL OFFICER M 3,347 $0 $0 Jul 17
2025-06-04
9 other
⚡ 9 insiders
Insider Title Type Shares Price $ Value 10b5-1 Filed
Appelhans Dannielle A 30,000 $0 $0 Jun 6
Christensen Gustav A 30,000 $0 $0 Jun 6
Cooper Ronald Harold Wilfred A 30,000 $0 $0 Jun 6
Rhodes Jason P A 30,000 $0 $0 Jun 6
Stehman-Breen Catherine A 30,000 $0 $0 Jun 6
Quinn Anthony G. A 30,000 $0 $0 Jun 6
Rowland Charles A Jr A 30,000 $0 $0 Jun 6
JONAS JEFFREY M A 30,000 $0 $0 Jun 6
Nicholson Donald William A 30,000 $0 $0 Jun 6