Mirum Pharmaceuticals, Inc.
DE ˙ DB ˙ US6047491013
76,16 € ↓ -0,96 (-1,24%)
2026-06-04
DEL PRIS
SecurityDE:08D / Mirum Pharmaceuticals, Inc.
InstitutionBlackRock, Inc.
Latest Disclosed Ownership3,465,559 shares
Ownership 5.70%
BlackRock, Inc. ownership in 08D / Mirum Pharmaceuticals, Inc.

2026-04-27 - BlackRock, Inc. has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 3,465,559 shares of Mirum Pharmaceuticals, Inc. (DE:08D). This represents 5.7 percent ownership of the company. In their previous filing dated 2024-11-12 , BlackRock, Inc. had reported owning 3,368,157 shares, indicating an increase of 2.89 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File
Date
Effective
Date
Form Prev
Shares
Latest
Shares
ΔShares
(Percent)
Ownership
(Percent)
ΔOwnership
(Percent)
2026-04-27 2026-04-27 13G/A 3,368,157 3,465,559 2.89 5.70 -19.72
2024-11-12 2024-11-12 13G/A 3,368,157 3,368,157 0.00 7.10 0.00
2024-10-22 2024-10-22 13G/A 3,368,157 7.10
2024-01-31 2024-01-31 13G 1,677,907 2,532,642 50.94 5.40 17.39
2023-03-08 2023-03-08 13G/A 2,136,677 1,677,907 -21.47 4.60 -20.69
2023-02-03 2023-02-03 13G 2,136,677 5.80

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-13 2026-03-31 13F MIRUM PHARMACEUTICALS COM 604749101 3,846,530 201,244 5.52 355,342 23.41 0.0062
2026-02-12 2025-12-31 13F MIRUM PHARMACEUTICALS COM 604749101 3,645,286 42,852 1.19 287,941 9.03 0.0049
2025-11-12 2025-09-30 13F MIRUM PHARMACEUTICALS COM 604749101 3,602,434 25,343 0.71 264,094 45.08 0.0046
2025-08-12 2025-06-30 13F MIRUM PHARMACEUTICALS COM 604749101 3,577,091 237,534 7.11 182,038 21.00 0.0035
2025-05-02 2025-03-31 13F MIRUM PHARMACEUTICALS COM 604749101 3,339,557 -95,071 -2.77 150,447 5.93 0.0032
2025-02-07 2024-12-31 13F MIRUM PHARMACEUTICALS COM 604749101 3,434,628 66,471 1.97 142,022 8.12 0.0029
2024-11-13 2024-09-30 13F MIRUM PHARMACEUTICALS COM 604749101 3,368,157 130,108 4.02 131,358 18.65 0.0028
2024-08-13 2024-06-30 13F MIRUM PHARMACEUTICALS COM 604749101 3,238,049 785,776 32.04 110,709 79.72 0.0025
2024-05-10 2024-03-31 13F MIRUM PHARMACEUTICALS COM 604749101 2,452,273 -9,477 -0.38 61,601 -15.23 0.0014
2024-02-13 2023-12-31 13F MIRUM PHARMACEUTICALS COM 604749101 2,461,750 348,341 16.48 72,671 8.82 0.0019
2023-11-13 2023-09-30 13F MIRUM PHARMACEUTICALS COM 604749101 2,113,409 83,034 4.09 66,784 27.15 0.0019
2023-08-11 2023-06-30 13F MIRUM PHARMACEUTICALS COM 604749101 2,030,375 320,549 18.75 52,526 27.89 0.0014
2023-05-12 2023-03-31 13F MIRUM PHARMACEUTICALS COM 604749101 1,709,826 -426,851 -19.98 41,070 -1.43 0.0012
2023-02-13 2022-12-31 13F MIRUM PHARMACEUTICALS COM 604749101 2,136,677 387,328 22.14 41,665 13.36 0.0013
2022-11-14 2022-09-30 13F MIRUM PHARMACEUTICALS COM 604749101 1,749,349 353,337 25.31 36,754 35.29 0.0013
2022-08-12 2022-06-30 13F MIRUM PHARMACEUTICALS COM 604749101 1,396,012 613,182 78.33 27,166 57.59 0.0009
2022-05-12 2022-03-31 13F MIRUM PHARMACEUTICALS COM 604749101 782,830 10,732 1.39 17,238 39.96 0.0005
2022-02-10 2021-12-31 13F MIRUM PHARMACEUTICALS COM 604749101 772,098 161,533 26.46 12,316 1.27 0.0003
2021-11-09 2021-09-30 13F MIRUM PHARMACEUTICALS COM 604749101 610,565 2,831 0.47 12,162 15.74 0.0003
2021-08-11 2021-06-30 13F MIRUM PHARMACEUTICALS COM 604749101 607,734 -153,105 -20.12 10,508 -30.31 0.0003
2021-05-07 2021-03-31 13F MIRUM PHARMACEUTICALS COM 604749101 760,839 205,950 37.12 15,078 55.62 0.0004
2021-02-05 2020-12-31 13F MIRUM PHARMACEUTICALS COM 604749101 554,889 132,920 31.50 9,689 19.16 0.0003
2020-11-06 2020-09-30 13F MIRUM PHARMACEUTICALS COM 604749101 421,969 -3,569 -0.84 8,131 -1.81 0.0003
2020-08-14 2020-06-30 13F MIRUM PHARMACEUTICALS COM 604749101 425,538 168,803 65.75 8,281 130.48 0.0003
2020-05-01 2020-03-31 13F MIRUM PHARMACEUTICALS COM 604749101 256,735 75,566 41.71 3,593 -19.11 0.0002
2020-02-13 2019-12-31 13F MIRUM PHARMACEUTICALS COM 604749101 181,169 146,114 416.81 4,442 1,161.93 0.0002
2019-11-08 2019-09-30 13F MIRUM PHARMACEUTICALS COM 604749101 35,055 35,055 352 0.0000
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.