13D/13G Filings - Atlas Venture Fund X L.P.

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
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Reported
DateTime
Transaction
Date
Type Company
Symbol
Filed By
Symbol
Shares Owned
% Owned
Shares Vs. Prev Report View
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%
-794,898decrease
(-16.00%)
Filing
History
2024-10-28
6:08 pm
Purchase
2024-10-28 13D Tectonic Therapeutic, Inc.
TECX
Atlas Venture Fund X L.P. 67,567
0.500%
67,567increase
(New Position)
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%
864,261increase
(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. 7,111,939
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%
-98,811decrease
(-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%
-191,599decrease
(-12.02%)
Filing
History
2023-09-21
4:44 pm
Purchase
2023-08-15 13D Disc Medicine, Inc.
IRON
Atlas Venture Fund X L.P. 1,593,785
7.000%
1,593,785increase
(New Position)
Filing
History
2023-09-15
4:56 pm
Purchase
2023-09-11 13D Dianthus Therapeutics, Inc.
DNTH
Atlas Venture Fund X L.P. 186,089
1.300%
186,089increase
(New Position)
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%
-696,087decrease
(-12.08%)
Filing
History
2023-02-14
4:14 pm
Purchase
2022-12-29 13D Gemini Therapeutics, Inc.
GMTX
Atlas Venture Fund X L.P. 2,237,303
12.900%
1,835,799increase
(+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%
-665,402decrease
(-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%
-360,829decrease
(-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%
-379,892decrease
(-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. 2,901,609
8.100%
2,901,609increase
(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%
-2,185,970decrease
(-27.50%)
Filing
History
2022-02-11
5:06 pm
Sale
2021-12-31 13G Generation Bio Co.
GBIO
Atlas Venture Fund X L.P. 7,111,939
12.500%
-3,000,000decrease
(-29.67%)
Filing
History
2021-02-17
08:26 am
Sale
2021-02-11 13D Magenta Therapeutics, Inc.
MGTA
Atlas Venture Fund X L.P. 3,357,340
7.000%
-759,785decrease
(-18.45%)
Filing
History
2021-02-16
5:29 pm
Unchanged
2021-02-12 13D Spero Therapeutics, Inc.
SPRO
Atlas Venture Fund X L.P. 1,031,160
3.800%
0
(Unchanged)
Filing
History
2021-02-16
5:28 pm
Purchase
2020-12-31 13G Generation Bio Co.
GBIO
Atlas Venture Fund X L.P. 10,111,939
21.700%
10,111,939increase
(New Position)
Filing
History
2021-02-16
5:27 pm
Purchase
2020-12-31 13G Kymera Therapeutics, Inc.
KYMR
Atlas Venture Fund X L.P. 7,948,982
17.900%
7,948,982increase
(New Position)
Filing
History
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