| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | GBIO | Common Stock | Sale | $1,488,654 | -59,978 | -28% | $24.82* | 155,708 | 21 Jun 2021 | See footnote | F1, F2, F3, F4 |
| transaction | GBIO | Common Stock | Sale | $95,356 | -3,796 | -2.4% | $25.12* | 151,912 | 21 Jun 2021 | See footnote | F1, F2, F4, F5 |
| transaction | GBIO | Common Stock | Sale | $2,755 | -111 | -11% | $24.82* | 897 | 21 Jun 2021 | See footnote | F1, F3, F6, F7 |
| transaction | GBIO | Common Stock | Sale | $176 | -7 | -0.78% | $25.12* | 890 | 21 Jun 2021 | See footnote | F1, F5, F6, F7 |
| transaction | GBIO | Common Stock | Sale | $823,542 | -33,261 | -22% | $24.76* | 118,651 | 22 Jun 2021 | See footnote | F1, F2, F4, F8 |
| transaction | GBIO | Common Stock | Sale | $635,242 | -25,208 | -21% | $25.20* | 93,443 | 22 Jun 2021 | See footnote | F1, F2, F4, F9 |
| transaction | GBIO | Common Stock | Sale | $1,510 | -61 | -6.9% | $24.76* | 829 | 22 Jun 2021 | See footnote | F1, F6, F7, F8 |
| transaction | GBIO | Common Stock | Sale | $1,184 | -47 | -5.7% | $25.20* | 782 | 22 Jun 2021 | See footnote | F1, F6, F7, F9 |
| transaction | GBIO | Common Stock | Sale | $856,783 | -34,162 | -37% | $25.08* | 59,281 | 23 Jun 2021 | See footnote | F1, F2, F4, F10 |
| transaction | GBIO | Common Stock | Sale | $727,823 | -28,331 | -48% | $25.69* | 30,950 | 23 Jun 2021 | See footnote | F1, F2, F4, F11 |
| transaction | GBIO | Common Stock | Sale | $1,580 | -63 | -8.1% | $25.08* | 719 | 23 Jun 2021 | See footnote | F1, F6, F7, F10 |
| transaction | GBIO | Common Stock | Sale | $1,362 | -53 | -7.4% | $25.69* | 666 | 23 Jun 2021 | See footnote | F1, F6, F7, F11 |
| holding | GBIO | Common Stock | 8,111,939 | 21 Jun 2021 | See footnote | F12 | |||||
| holding | GBIO | Common Stock | 1,266,937 | 21 Jun 2021 | See footnote | F13 |
| Id | Content |
|---|---|
| F1 | Shares were sold pursuant to a Rule 10b5-1 trading plan dated April 20 ,2021. |
| F2 | The shares reported herein give effect to the pro rata distribution of shares by Atlas Venture Fund X, L.P. ("Atlas Venture Fund X") for no additional consideration to its limited partners and its and general partner, Atlas Venture Associates X, L.P. ("AVA X LP"), subsequent to the Reporting Persons' last Section 16 filing reporting ownership of the Issuer's Common Stock. As the distribution of such shares constituted only a change in the form of the Reporting Persons' ownership in such shares, the Reporting Persons were not required to report the distribution pursuant to Section 16. |
| F3 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $24.08 to $25.07 inclusive. The Reporting Persons undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (3), (5), (8), (9), (10) and (11). |
| F4 | The shares are held directly by AVA X LP. Atlas Venture Associates X, LLC ("AVA X LLC") is the general partner of AVA X LP. The Reporting Person is a member of AVA X LLC and disclaims Section 16 beneficial ownership of such securities held by AVA X LP, except to the extent of his pecuniary interest therein, if any. |
| F5 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $25.08 to $25.20 inclusive. |
| F6 | The shares reported herein give effect to the pro rata distribution of shares by Atlas Venture Opportunity Fund I, L.P. ("AVOF I") for no additional consideration to its limited partners and its and general partner, Atlas Venture Associates Opportunity I, LP ("AVAO LP"), subsequent to the Reporting Persons' last Section 16 filing reporting ownership of the Issuer's Common Stock. As the distribution of such shares constituted only a change in the form of the Reporting Persons' ownership in such shares, the Reporting Persons were not required to report the distribution pursuant to Section 16. |
| F7 | The shares are held directly by AVAO LP. Atlas Venture Associates Opportunity I, LLC ("AVAO LLC") is the general partner of AVAO LP. The Reporting Person is a member of AVAO LLC and disclaims Section 16 beneficial ownership of such securities held by AVOF I, except to the extent of his pecuniary interest therein, if any. |
| F8 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $24.08 to $25.07 inclusive. |
| F9 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $25.10 to $25.285 inclusive. |
| F10 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $24.63 to $25.62 inclusive. |
| F11 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $25.63 to $25.95 inclusive. |
| F12 | These shares are held directly by Atlas Venture Fund X. The general partner of Atlas Venture Fund X is AVA X LP. AVA X LLC is the general partner of AVA X LP. The Reporting Person is a member of AVA X LLC and disclaims Section 16 beneficial ownership of the securities held by Atlas Venture Fund X, except to the extend if its pecuniary interest therein, if any. |
| F13 | The shares are owned directly by AVOF I. AVAO LP is the general partner of AVOF I. AVAO LLC is the general partner of AVAO LP. The Reporting Person is a member of AVAO LLC and disclaims Section 16 beneficial ownership of such securities held by AVOF I, except to the extent of his pecuniary interest therein, if any. |