Atlas Venture Fund X, L.P.
Insider CIK 1628098 · AVRO 10% owner · MGTA 10% owner · GBIO 10% owner · REPL 10% owner · KYMR 10% owner · IRON 10% owner · IKNA 10% owner
Trades across companies
| Ticker | Code | Trade | Filed | Shares | Price | Value | Owned after | |
|---|---|---|---|---|---|---|---|---|
| GBIO Generation Bio Co. | U Tender | 2026-02-09 | 2026-02-09 | 116,693 | — | $0 | 0 | SEC↗ |
| GBIO Generation Bio Co. | U Tender | 2026-02-09 | 2026-02-09 | 60 | — | $0 | 0 | SEC↗ |
| GBIO Generation Bio Co. | U Tender | 2026-02-09 | 2026-02-09 | 711,193 | — | $0 | 0 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2024-03-13 | 2024-03-13 | 1,386 | $42.84 | $59.4K | 828,830 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2024-03-13 | 2024-03-13 | 22,779 | $42.19 | $961.0K | 830,216 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2024-03-13 | 2024-03-13 | 6,686 | $42.84 | $286.4K | 4,676,075 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2024-03-13 | 2024-03-13 | 108,404 | $42.19 | $4.57M | 4,682,761 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2024-03-12 | 2024-03-13 | 126,066 | $41.94 | $5.29M | 4,799,746 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2024-03-12 | 2024-03-13 | 8,581 | $42.52 | $364.9K | 4,791,165 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2024-03-12 | 2024-03-13 | 26,452 | $41.94 | $1.11M | 854,814 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2024-03-12 | 2024-03-13 | 1,819 | $42.52 | $77.3K | 852,995 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2024-03-11 | 2024-03-13 | 5,122 | $43.42 | $222.4K | 4,925,812 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2024-03-11 | 2024-03-13 | 37,180 | $42.77 | $1.59M | 4,930,934 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2024-03-11 | 2024-03-13 | 7,837 | $42.77 | $335.2K | 882,311 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2024-03-11 | 2024-03-13 | 1,045 | $43.42 | $45.4K | 881,266 | SEC↗ |
| IRON Disc Medicine, Inc. | S Sale | 2024-01-23 | 2024-01-25 | 20,000 | $67.65 | $1.35M | 198,326 | SEC↗ |
| IRON Disc Medicine, Inc. | S Sale | 2024-01-23 | 2024-01-25 | 47,500 | $67.65 | $3.21M | 1,402,186 | SEC↗ |
| IRON Disc Medicine, Inc. | S Sale | 2024-01-23 | 2024-01-25 | 82,500 | $67.65 | $5.58M | 703,660 | SEC↗ |
| IRON Disc Medicine, Inc. | S Sale | 2024-01-10 | 2024-01-12 | 20,000 | $64.00 | $1.28M | 786,160 | SEC↗ |
| IRON Disc Medicine, Inc. | S Sale | 2024-01-10 | 2024-01-12 | 30,000 | $64.00 | $1.92M | 1,449,686 | SEC↗ |
| IRON Disc Medicine, Inc. | S Sale | 2023-12-14 | 2023-12-14 | 120 | $59.74 | $7.2K | 806,160 | SEC↗ |
| IRON Disc Medicine, Inc. | S Sale | 2023-12-14 | 2023-12-14 | 180 | $59.74 | $10.8K | 1,479,686 | SEC↗ |
| IRON Disc Medicine, Inc. | S Sale | 2023-12-14 | 2023-12-14 | 20,429 | $58.27 | $1.19M | 806,280 | SEC↗ |
| IRON Disc Medicine, Inc. | S Sale | 2023-12-14 | 2023-12-14 | 30,645 | $58.27 | $1.79M | 1,479,866 | SEC↗ |
| IRON Disc Medicine, Inc. | S Sale | 2023-12-13 | 2023-12-14 | 3,508 | $59.99 | $210.4K | 826,749 | SEC↗ |
| IRON Disc Medicine, Inc. | S Sale | 2023-12-13 | 2023-12-14 | 40 | $60.50 | $2.4K | 826,709 | SEC↗ |
| IRON Disc Medicine, Inc. | S Sale | 2023-12-13 | 2023-12-14 | 60 | $60.50 | $3.6K | 1,510,511 | SEC↗ |
| IRON Disc Medicine, Inc. | S Sale | 2023-12-13 | 2023-12-14 | 5,263 | $59.99 | $315.7K | 1,510,571 | SEC↗ |
| IRON Disc Medicine, Inc. | S Sale | 2023-12-12 | 2023-12-14 | 9,901 | $65.77 | $651.2K | 1,515,834 | SEC↗ |
| IRON Disc Medicine, Inc. | S Sale | 2023-12-12 | 2023-12-14 | 18,615 | $65.10 | $1.21M | 836,856 | SEC↗ |
| IRON Disc Medicine, Inc. | S Sale | 2023-12-12 | 2023-12-14 | 27,924 | $65.10 | $1.82M | 1,525,735 | SEC↗ |
| IRON Disc Medicine, Inc. | S Sale | 2023-12-12 | 2023-12-14 | 688 | $63.78 | $43.9K | 855,471 | SEC↗ |
| IRON Disc Medicine, Inc. | S Sale | 2023-12-12 | 2023-12-14 | 1,031 | $63.78 | $65.8K | 1,553,659 | SEC↗ |
| IRON Disc Medicine, Inc. | S Sale | 2023-12-12 | 2023-12-14 | 665 | $62.90 | $41.8K | 856,159 | SEC↗ |
| IRON Disc Medicine, Inc. | S Sale | 2023-12-12 | 2023-12-14 | 994 | $62.90 | $62.5K | 1,554,690 | SEC↗ |
| IRON Disc Medicine, Inc. | S Sale | 2023-12-12 | 2023-12-14 | 4,155 | $62.42 | $259.4K | 856,824 | SEC↗ |
| IRON Disc Medicine, Inc. | S Sale | 2023-12-12 | 2023-12-14 | 6,234 | $62.42 | $389.1K | 1,555,684 | SEC↗ |
| IRON Disc Medicine, Inc. | S Sale | 2023-12-12 | 2023-12-14 | 422 | $60.99 | $25.7K | 860,979 | SEC↗ |
| IRON Disc Medicine, Inc. | S Sale | 2023-12-12 | 2023-12-14 | 632 | $60.99 | $38.5K | 1,561,918 | SEC↗ |
| IRON Disc Medicine, Inc. | S Sale | 2023-12-12 | 2023-12-14 | 20,823 | $59.87 | $1.25M | 861,401 | SEC↗ |
| IRON Disc Medicine, Inc. | S Sale | 2023-12-12 | 2023-12-14 | 31,235 | $59.87 | $1.87M | 1,562,550 | SEC↗ |
| IRON Disc Medicine, Inc. | S Sale | 2023-12-12 | 2023-12-14 | 6,599 | $65.77 | $434.0K | 830,257 | SEC↗ |
| IRON Disc Medicine, Inc. | S Sale | 2023-09-16 | 2023-09-18 | 2,115 | $53.22 | $112.6K | 1,593,785 | SEC↗ |
| IRON Disc Medicine, Inc. | S Sale | 2023-09-15 | 2023-09-18 | 260,894 | $53.16 | $13.87M | 1,595,900 | SEC↗ |
| IRON Disc Medicine, Inc. | S Sale | 2023-09-14 | 2023-09-18 | 94,440 | $53.05 | $5.01M | 1,856,794 | SEC↗ |
| IRON Disc Medicine, Inc. | S Sale | 2023-08-15 | 2023-08-16 | 111,069 | $52.40 | $5.82M | 1,951,234 | SEC↗ |
| IRON Disc Medicine, Inc. | S Sale | 2023-08-15 | 2023-08-16 | 72,931 | $52.40 | $3.82M | 882,224 | SEC↗ |
| IRON Disc Medicine, Inc. | S Sale | 2023-08-14 | 2023-08-16 | 2,000 | $54.80 | $109.6K | 2,062,303 | SEC↗ |
| IRON Disc Medicine, Inc. | S Sale | 2023-08-14 | 2023-08-16 | 98,000 | $53.00 | $5.19M | 2,064,303 | SEC↗ |
| IRON Disc Medicine, Inc. | S Sale | 2023-08-14 | 2023-08-16 | 75,000 | $52.00 | $3.90M | 2,162,303 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2023-01-12 | 2023-01-13 | 21,592 | $30.29 | $654.0K | 890,148 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2023-01-12 | 2023-01-13 | 77,128 | $30.29 | $2.34M | 4,968,114 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2023-01-11 | 2023-01-13 | 21,683 | $29.96 | $649.6K | 5,045,242 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2023-01-11 | 2023-01-13 | 6,071 | $29.96 | $181.9K | 911,740 | SEC↗ |
| IRON Disc Medicine, Inc. | J Other | 2022-12-29 | 2023-01-03 | 1,835,799 | — | $0 | 2,237,303 | SEC↗ |
| IRON Disc Medicine, Inc. | J Other | 2022-12-29 | 2023-01-03 | 882,224 | — | $0 | 955,156 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2022-12-15 | 2022-12-16 | 717 | $30.00 | $21.5K | 917,811 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2022-12-15 | 2022-12-16 | 2,561 | $30.00 | $76.8K | 5,066,925 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2022-12-14 | 2022-12-16 | 112,819 | $30.28 | $3.42M | 5,252,744 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2022-12-14 | 2022-12-16 | 101,189 | $31.44 | $3.18M | 5,151,555 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2022-12-14 | 2022-12-16 | 54,737 | $32.33 | $1.77M | 5,096,818 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2022-12-14 | 2022-12-16 | 13,997 | $33.34 | $466.7K | 5,082,821 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2022-12-14 | 2022-12-16 | 3,733 | $34.02 | $127.0K | 918,528 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2022-12-14 | 2022-12-16 | 3,919 | $33.34 | $130.7K | 922,261 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2022-12-14 | 2022-12-16 | 15,324 | $32.33 | $495.4K | 926,180 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2022-12-14 | 2022-12-16 | 28,329 | $31.44 | $890.7K | 941,504 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2022-12-14 | 2022-12-16 | 31,584 | $30.28 | $956.4K | 969,833 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2022-12-14 | 2022-12-16 | 13,335 | $34.02 | $453.7K | 5,069,486 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2022-11-03 | 2022-11-04 | 21,085 | $30.00 | $632.5K | 1,001,417 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2022-11-03 | 2022-11-04 | 75,312 | $30.00 | $2.26M | 5,365,563 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2022-11-02 | 2022-11-04 | 96,581 | $30.02 | $2.90M | 5,440,875 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2022-11-02 | 2022-11-04 | 27,038 | $30.02 | $811.7K | 1,022,502 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2022-11-01 | 2022-11-01 | 3,727 | $31.08 | $115.8K | 5,537,456 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2022-11-01 | 2022-11-01 | 1,044 | $31.08 | $32.4K | 1,049,540 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2022-11-01 | 2022-11-01 | 56,455 | $30.57 | $1.73M | 5,541,183 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2022-11-01 | 2022-11-01 | 15,804 | $30.57 | $483.1K | 1,050,584 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2022-10-31 | 2022-11-01 | 94,239 | $30.23 | $2.85M | 5,597,638 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2022-10-31 | 2022-11-01 | 26,383 | $30.23 | $797.6K | 1,066,388 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2022-10-28 | 2022-11-01 | 71,135 | $30.00 | $2.13M | 5,691,877 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | S Sale | 2022-10-28 | 2022-11-01 | 19,915 | $30.00 | $597.5K | 1,092,771 | SEC↗ |
| GBIO Generation Bio Co. | J Other | 2021-09-17 | 2021-09-21 | 100,000 | — | $0 | 1,166,937 | SEC↗ |
| GBIO Generation Bio Co. | J Other | 2021-09-17 | 2021-09-21 | 1,000,000 | — | $0 | 7,111,939 | SEC↗ |
| GBIO Generation Bio Co. | J Other | 2021-06-16 | 2021-06-21 | 1,000,000 | — | $0 | 8,111,939 | SEC↗ |
| GBIO Generation Bio Co. | J Other | 2021-06-16 | 2021-06-21 | 100,000 | — | $0 | 1,266,937 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | J Other | 2021-05-18 | 2021-05-18 | 1,122,619 | — | $0 | 5,763,012 | SEC↗ |
| IKNA Ikena Oncology, Inc. | C Conversion deriv | 2021-03-30 | 2021-04-01 | 5,362,888 | — | $0 | 0 | SEC↗ |
| IKNA Ikena Oncology, Inc. | C Conversion deriv | 2021-03-30 | 2021-04-01 | 9,499,999 | — | $0 | 0 | SEC↗ |
| IKNA Ikena Oncology, Inc. | C Conversion deriv | 2021-03-30 | 2021-04-01 | 11,258,117 | — | $0 | 0 | SEC↗ |
| IKNA Ikena Oncology, Inc. | C Conversion deriv | 2021-03-30 | 2021-04-01 | 7,863,094 | — | $0 | 0 | SEC↗ |
| IKNA Ikena Oncology, Inc. | C Conversion | 2021-03-30 | 2021-04-01 | 2,901,609 | — | $0 | 2,901,609 | SEC↗ |
| IKNA Ikena Oncology, Inc. | C Conversion | 2021-03-30 | 2021-04-01 | 749,634 | — | $0 | 749,634 | SEC↗ |
| IKNA Ikena Oncology, Inc. | C Conversion | 2021-03-30 | 2021-04-01 | 1,099,118 | — | $0 | 1,268,213 | SEC↗ |
| GBIO Generation Bio Co. | J Other | 2021-03-16 | 2021-03-18 | 1,000,000 | — | $0 | 9,111,939 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | J Other | 2021-02-18 | 2021-02-22 | 1,063,351 | — | $0 | 6,885,631 | SEC↗ |
| MGTA Magenta Therapeutics, Inc. | J Other | 2021-02-11 | 2021-02-16 | 968,726 | — | $0 | 3,148,399 | SEC↗ |
| GBIO Generation Bio Co. | J Other | 2020-12-15 | 2020-12-17 | 1,151,882 | — | $0 | 11,478,876 | SEC↗ |
| REPL Replimune Group, Inc. | J Other | 2020-09-15 | 2020-09-17 | 445,339 | — | $0 | 2,486,296 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | C Conversion deriv | 2020-08-25 | 2020-08-25 | 1,774,624 | — | $0 | 0 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | C Conversion deriv | 2020-08-25 | 2020-08-25 | 3,000,000 | — | $0 | 0 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | C Conversion deriv | 2020-08-25 | 2020-08-25 | 7,000,000 | — | $0 | 0 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | C Conversion deriv | 2020-08-25 | 2020-08-25 | 1,477,832 | — | $0 | 0 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | C Conversion | 2020-08-25 | 2020-08-25 | 1,112,686 | — | $0 | 1,112,686 | SEC↗ |
| KYMR Kymera Therapeutics, Inc. | C Conversion | 2020-08-25 | 2020-08-25 | 7,196,584 | — | $0 | 7,948,982 | SEC↗ |
| REPL Replimune Group, Inc. | J Other | 2020-07-02 | 2020-07-07 | 445,339 | — | $0 | 2,931,635 | SEC↗ |
| GBIO Generation Bio Co. | C Conversion deriv | 2020-06-16 | 2020-06-18 | 15,051,020 | — | $0 | 0 | SEC↗ |
| GBIO Generation Bio Co. | C Conversion deriv | 2020-06-16 | 2020-06-18 | 268,269 | — | $0 | 0 | SEC↗ |
| REPL Replimune Group, Inc. | J Other | 2020-06-16 | 2020-06-18 | 445,339 | — | $0 | 3,376,974 | SEC↗ |
| GBIO Generation Bio Co. | C Conversion | 2020-06-16 | 2020-06-18 | 10,040,032 | — | $0 | 12,630,758 | SEC↗ |
| AVRO AVROBIO, Inc. | P Buy | 2019-07-19 | 2019-07-23 | 810,811 | $18.50 | $15.00M | 5,567,289 | SEC↗ |
| MGTA Magenta Therapeutics, Inc. | J Other | 2019-03-20 | 2019-03-22 | 726,500 | — | $0 | 4,117,125 | SEC↗ |
| MGTA Magenta Therapeutics, Inc. | S Sale | 2019-03-20 | 2019-03-22 | 14,245 | $17.86 | $254.4K | 0 | SEC↗ |
| MGTA Magenta Therapeutics, Inc. | J Other | 2019-03-20 | 2019-03-22 | 14,245 | — | $0 | 14,245 | SEC↗ |
| REPL Replimune Group, Inc. | J Other | 2019-02-12 | 2019-02-14 | 631,073 | — | $0 | 3,822,313 | SEC↗ |
| REPL Replimune Group, Inc. | C Conversion deriv | 2018-07-24 | 2018-07-26 | 1,013,547 | — | $0 | 0 | SEC↗ |
| REPL Replimune Group, Inc. | C Conversion deriv | 2018-07-24 | 2018-07-26 | 3,439,839 | — | $0 | 0 | SEC↗ |
| REPL Replimune Group, Inc. | C Conversion | 2018-07-24 | 2018-07-26 | 1,013,547 | — | $0 | 4,453,386 | SEC↗ |
| REPL Replimune Group, Inc. | C Conversion | 2018-07-24 | 2018-07-26 | 3,439,839 | — | $0 | 3,439,839 | SEC↗ |
| AVRO AVROBIO, Inc. | C Conversion deriv | 2018-06-25 | 2018-06-25 | 12,580,199 | — | $0 | 0 | SEC↗ |
| AVRO AVROBIO, Inc. | C Conversion deriv | 2018-06-25 | 2018-06-25 | 3,740,239 | — | $0 | 0 | SEC↗ |
| AVRO AVROBIO, Inc. | C Conversion deriv | 2018-06-25 | 2018-06-25 | 3,333,333 | — | $0 | 0 | SEC↗ |
| MGTA Magenta Therapeutics, Inc. | C Conversion deriv | 2018-06-25 | 2018-06-27 | 204,339 | — | $0 | 0 | SEC↗ |
| MGTA Magenta Therapeutics, Inc. | C Conversion deriv | 2018-06-25 | 2018-06-27 | 12,061,496 | — | $0 | 0 | SEC↗ |
| AVRO AVROBIO, Inc. | C Conversion | 2018-06-25 | 2018-06-25 | 905,188 | — | $0 | 4,756,478 | SEC↗ |
| AVRO AVROBIO, Inc. | C Conversion | 2018-06-25 | 2018-06-25 | 3,044,579 | — | $0 | 3,851,290 | SEC↗ |
| AVRO AVROBIO, Inc. | C Conversion | 2018-06-25 | 2018-06-25 | 806,711 | — | $0 | 806,711 | SEC↗ |
| MGTA Magenta Therapeutics, Inc. | C Conversion | 2018-06-25 | 2018-06-27 | 4,746,876 | — | $0 | 4,843,625 | SEC↗ |