Form4insider filings, from the source

Company · CIK 0001759425 · SIC 2834 — Pharmaceutical Preparations · Nasdaq

Mirum Pharmaceuticals, Inc. · MIRM

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $0 · 0sales $14.2M · 10net −$14.2M
$10k$10k$100k$100k$1M$1M$10M$10MbuyssalesJun 28Jul 13Jul 28Aug 13Aug 28Sep 13Sep 28

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 14, 2026 SForm 4 →Sep 15, 4:10 pm EDTEric BjerkholtCHIEF FINANCIAL OFFICER9,943$98.37$978,09344,745−18.2%
Sep 11, 2026 MForm 4 →Sep 15, 4:10 pm EDTEric BjerkholtCHIEF FINANCIAL OFFICER18,333——54,688—
Sep 2, 2026 SForm 4 →Sep 3, 6:54 pm EDTJolanda HoweSVP, GLOBAL CONTROLLER658$100.00$65,800616−51.6%10b5-1
Sep 1, 2026 SForm 4 →Sep 3, 6:52 pm EDTChristopher PeetzCHIEF EXECUTIVE OFFICER, Director30,000$98.68$2,960,401194,440−13.4%10b5-1
Sep 1, 2026 MForm 4 →Sep 3, 6:52 pm EDTChristopher PeetzCHIEF EXECUTIVE OFFICER, Director30,000$2.94$88,080224,440—10b5-1
Aug 18, 2026 SForm 4 →Aug 19, 6:19 pm EDTJolanda HoweSVP, GLOBAL CONTROLLER40,000$100.00$4,000,0001,274−96.9%
Aug 18, 2026 MForm 4 →Aug 19, 6:19 pm EDTJolanda HoweSVP, GLOBAL CONTROLLER40,000$6.27$250,80041,274—
Aug 11, 2026 SForm 4 →Aug 12, 5:14 pm EDTEric BjerkholtCHIEF FINANCIAL OFFICER6,001$99.90$599,51036,355−14.2%10b5-1
Aug 10, 2026 SForm 4 →Aug 11, 5:41 pm EDTChristopher PeetzCHIEF EXECUTIVE OFFICER, Director20,000$98.92$1,978,402194,309−9.33%10b5-1
Aug 10, 2026 MForm 4 →Aug 11, 5:41 pm EDTChristopher PeetzCHIEF EXECUTIVE OFFICER, Director20,000$2.94$58,720214,309—10b5-1
Aug 3, 2026 SForm 4 →Aug 5, 4:26 pm EDTJolanda HoweSVP, GLOBAL CONTROLLER1,840$105.29$193,7341,274−59.1%10b5-1
Jul 6, 2026 SForm 4 →Jul 8, 5:12 pm EDTChristopher PeetzCHIEF EXECUTIVE OFFICER, Director20,000$122.27$2,445,382194,309−9.33%10b5-1
Jul 6, 2026 MForm 4 →Jul 8, 5:12 pm EDTChristopher PeetzCHIEF EXECUTIVE OFFICER, Director20,000$2.94$58,720214,309—10b5-1
Jul 6, 2026 SForm 4 →Jul 8, 5:07 pm EDTEric BjerkholtCHIEF FINANCIAL OFFICER5,000$122.25$611,27342,181−10.6%10b5-1
Jul 1, 2026 SForm 4 →Jul 2, 6:01 pm EDTJolanda HoweSVP, GLOBAL CONTROLLER2,721$120.00$326,5203,114−46.6%10b5-1

Reported at this company — derivatives (options, RSUs, warrants)

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 11, 2026 MForm 4 →Sep 15, 4:10 pm EDTEric BjerkholtCHIEF FINANCIAL OFFICER18,333——0—
Sep 1, 2026 MForm 4 →Sep 3, 6:52 pm EDTChristopher PeetzCHIEF EXECUTIVE OFFICER, Director30,000——58,487—10b5-1
Aug 18, 2026 MForm 4 →Aug 19, 6:19 pm EDTJolanda HoweSVP, GLOBAL CONTROLLER40,000——0—
Aug 10, 2026 MForm 4 →Aug 11, 5:41 pm EDTChristopher PeetzCHIEF EXECUTIVE OFFICER, Director20,000——88,487—10b5-1
Jul 6, 2026 MForm 4 →Jul 8, 5:12 pm EDTChristopher PeetzCHIEF EXECUTIVE OFFICER, Director20,000——108,487—10b5-1