Mirum Pharmaceuticals Inc. (MIRM) - 13D/13G Filings

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>>
Time period
Goto 0, 1, 2, Next
Reported
DateTime
Transaction
Date
TypeCompany
Symbol
Filed By
Symbol
Shares Owned
% Owned
Shares Vs. Prev ReportView
2026-04-27
4:12 pm
Purchase
2026-03-3113GMIRUM PHARMACEUTICALS INC
MIRM
BlackRock Inc.
BLK
3,465,559
5.700%
59,487increase
(+1.75%)
Filing
History
2026-03-27
10:52 am
Sale
2026-03-1313GMIRUM PHARMACEUTICALS INC
MIRM
VANGUARD GROUP INC0
0.000%
-2,476,244decrease
(Position Closed)
Filing
History
2026-02-17
4:33 pm
Purchase
2025-12-3113GMIRUM PHARMACEUTICALS INC
MIRM
JANUS HENDERSON GROUP PLC
JHG
6,065,308
11.800%
620,269increase
(+11.39%)
Filing
History
2026-02-13
1:09 pm
Sale
2025-12-3113GMIRUM PHARMACEUTICALS INC
MIRM
Eventide Asset Management, LLC2,093,582
4.100%
-513,356decrease
(-19.69%)
Filing
History
2026-01-27
4:12 pm
Purchase
2026-01-2313DMIRUM PHARMACEUTICALS INC
MIRM
Frazier Life Sciences IX, L.P.4,108,404
6.800%
373,184increase
(+9.99%)
Filing
History
2025-12-05
12:46 pm
Purchase
2025-11-2813GMIRUM PHARMACEUTICALS INC
MIRM
JANUS HENDERSON GROUP PLC
JHG
5,445,039
10.600%
447,453increase
(+8.95%)
Filing
History
2025-11-14
4:14 pm
Sale
2025-09-3013GMIRUM PHARMACEUTICALS INC
MIRM
BIOTECHNOLOGY VALUE FUND L P1,495,290
3.000%
-1,580,617decrease
(-51.39%)
Filing
History
2025-11-14
12:03 pm
Sale
2025-09-3013GMIRUM PHARMACEUTICALS INC
MIRM
JANUS HENDERSON GROUP PLC
JHG
4,997,586
10.000%
-238,691decrease
(-4.56%)
Filing
History
2025-11-04
5:26 pm
Unchanged
2025-11-0113DMIRUM PHARMACEUTICALS INC
MIRM
Frazier Life Sciences IX, L.P.3,735,220
7.600%
0
(Unchanged)
Filing
History
2025-08-20
5:17 pm
Sale
2025-08-1813DMIRUM PHARMACEUTICALS INC
MIRM
Frazier Life Sciences IX, L.P.3,735,220
7.600%
-2,491,172decrease
(-40.01%)
Filing
History
2025-08-14
11:15 am
Purchase
2025-06-3013GMIRUM PHARMACEUTICALS INC
MIRM
JANUS HENDERSON GROUP PLC
JHG
5,236,277
10.600%
154,320increase
(+3.04%)
Filing
History
2025-06-06
11:59 am
Purchase
2025-05-3013GMIRUM PHARMACEUTICALS INC
MIRM
JANUS HENDERSON GROUP PLC
JHG
5,081,957
10.300%
306,582increase
(+6.42%)
Filing
History
2025-05-15
3:32 pm
Sale
2025-03-3113GMIRUM PHARMACEUTICALS INC
MIRM
JANUS HENDERSON GROUP PLC
JHG
4,775,375
9.700%
-17,959,746decrease
(-79.00%)
Filing
History
2025-05-14
11:59 am
Purchase
2025-03-3113GMEREO BIOPHARMA GROUP PLC ADR
MREO
JANUS HENDERSON GROUP PLC
JHG
22,735,121
14.300%
17,736,344increase
(+354.81%)
Filing
History
2025-05-07
10:57 am
Purchase
2025-04-3013GMIRUM PHARMACEUTICALS INC
MIRM
JANUS HENDERSON GROUP PLC
JHG
4,998,777
10.100%
417,135increase
(+9.10%)
Filing
History
2025-02-14
12:11 pm
Sale
2024-12-3113GMIRUM PHARMACEUTICALS INC
MIRM
JANUS HENDERSON GROUP PLC
JHG
4,581,642
9.500%
-12,540,921decrease
(-73.24%)
Filing
History
2025-02-14
12:09 pm
Purchase
2024-12-3113GMEREO BIOPHARMA GROUP PLC ADR
MREO
JANUS HENDERSON GROUP PLC
JHG
17,122,563
11.000%
1,205,304increase
(+7.57%)
Filing
History
2025-02-14
12:06 pm
Purchase
2024-12-3113GMIRUM PHARMACEUTICALS INC
MIRM
Eventide Asset Management, LLC2,606,938
5.430%
386,938increase
(+17.43%)
Filing
History
2025-02-14
12:01 pm
Sale
2024-12-3113GINOZYME PHARMA INC
INZY
Eventide Asset Management, LLC2,220,000
3.460%
-1,225,363decrease
(-35.57%)
Filing
History
2024-11-14
4:37 pm
Sale
2024-09-3013GMIRUM PHARMACEUTICALS INC
MIRM
BIOTECHNOLOGY VALUE FUND L P3,075,907
6.400%
-1,294,117decrease
(-29.61%)
Filing
History
Goto 0, 1, 2, Next