Real time Form 13D and 13G transaction reports:
- Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
- Due to inconsistent filing format, it is highly recommended that you read the orignal filing form.
- Shares have beem adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
| Reported DateTime | Transaction Date | Type | Company Symbol | Filed By Symbol | Shares Owned % Owned | Shares Vs. Prev Report | View |
| 2026-05-28 4:28 pm Unchanged | 2026-05-26 | 13D | Q32 BIO INC QTTB | Atlas Venture Fund X, L.P. | 864,261 3.600% | 0 (Unchanged) | Filing History |
| 2026-05-14 4:24 pm Sale | 2026-03-31 | 13G | GENERATION BIO CO GBIO | Atlas Venture Fund X, L.P. | 0 0.000% | -711,194 (Position Closed) | Filing History |
| 2025-12-17 8:07 pm Sale | 2025-12-12 | 13D | DISC MEDICINE INC IRON | Atlas Venture Fund X, L.P. | 813,167 2.200% | -271,360 (-25.02%) | Filing History |
| 2025-08-15 7:16 pm Sale | 2025-08-13 | 13D | DISC MEDICINE INC IRON | Atlas Venture Fund X, L.P. | 1,084,527 3.100% | -317,659 (-22.65%) | Filing History |
| 2025-07-29 4:53 pm Sale | 2025-07-25 | 13D | IMAGENEBIO, INC. IMA | Atlas Venture Fund X, L.P. | 241,800 2.100% | -1 (-0.00%) | Filing History |
| 2024-11-14 4:31 pm Sale | 2024-09-30 | 13G | KYMERA THERAPEUTICS INC KYMR | Atlas Venture Fund X, L.P. | 4,173,216 6.400% | -794,898 (-16.00%) | Filing History |
| 2024-10-28 6:08 pm Sale | 2024-10-28 | 13D | TECTONIC THERAPEUTIC INC TECX | Atlas Venture Fund X, L.P. | 67,567 0.500% | -328,806 (-82.95%) | Filing History |
| 2024-04-01 9:52 pm Purchase | 2024-03-25 | 13D | Q32 BIO INC QTTB | Atlas Venture Fund X, L.P. | 864,261 7.200% | 864,261 (New Position) | Filing History |
| 2024-02-09 4:05 pm Unchanged | 2023-12-31 | 13G | GENERATION BIO CO GBIO | Atlas Venture Fund X, L.P. | 711,194 10.800% | 0 (Unchanged) | Filing History |
| 2024-02-09 4:03 pm Sale | 2023-12-31 | 13G | KYMERA THERAPEUTICS INC KYMR | Atlas Venture Fund X, L.P. | 4,968,114 8.400% | -98,811 (-1.95%) | Filing History |
| 2024-01-25 4:38 pm Sale | 2024-01-23 | 13D | DISC MEDICINE INC IRON | Atlas Venture Fund X, L.P. | 1,402,186 5.800% | -191,599 (-12.02%) | Filing History |
| 2023-09-21 4:44 pm Sale | 2023-08-15 | 13D | DISC MEDICINE INC IRON | Atlas Venture Fund X, L.P. | 1,593,785 7.000% | -643,518 (-28.76%) | Filing History |
| 2023-09-15 4:56 pm Sale | 2023-09-11 | 13D | DIANTHUS THERAPEUTICS INC DNTH | Atlas Venture Fund X, L.P. | 186,089 1.300% | -2,791,359 (-93.75%) | Filing History |
| 2023-02-14 4:28 pm Sale | 2022-12-31 | 13G | KYMERA THERAPEUTICS INC KYMR | Atlas Venture Fund X, L.P. | 5,066,925 9.200% | -696,087 (-12.08%) | Filing History |
| 2023-02-14 4:14 pm Purchase | 2022-12-29 | 13D | DISC MEDICINE INC IRON | Atlas Venture Fund X, L.P. | 2,237,303 12.900% | 1,835,798 (+457.23%) | Filing History |
| 2022-12-06 5:00 pm Sale | 2022-11-23 | 13D | REPLIMUNE GROUP INC REPL | Atlas Venture Fund X, L.P. | 1,498,635 3.000% | -665,402 (-30.75%) | Filing History |
| 2022-09-14 5:06 pm Sale | 2022-09-12 | 13D | REPLIMUNE GROUP INC REPL | Atlas Venture Fund X, L.P. | 2,164,037 4.400% | -360,829 (-14.29%) | Filing History |
| 2022-05-05 4:01 pm Sale | 2021-04-13 | 13D | MAGENTA THERAPEUTICS INC MGTA | Atlas Venture Fund X, L.P. | 2,977,448 5.100% | -379,892 (-11.32%) | Filing History |
| 2022-02-11 5:12 pm Purchase | 2021-03-30 | 13D | IKENA ONCOLOGY INC IKNA | Atlas Venture Fund X, L.P. | 241,801 8.100% | 241,801 (New Position) | Filing History |
| 2022-02-11 5:09 pm Sale | 2021-12-31 | 13G | KYMERA THERAPEUTICS INC KYMR | Atlas Venture Fund X, L.P. | 5,763,012 11.200% | -2,185,970 (-27.50%) | Filing History |