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Mirum Pharmaceuticals, Inc. insider trading

In twelve months insiders at Mirum Pharmaceuticals bought $9.0M and sold $42.2M on the open market; 38 of the 59 sales were under plans set months before.

Bought on the open market$9.0M1 purchase
Sold on the open market$42.2M59 sales
Sales set in advance38 of 59under Rule 10b5-1 plans
Pay taken in stockNone
New to this? How to read this page
  1. Insiders are the people who run the company: officers, directors and owners of 10% or more. They must report a trade on Form 4 within two business days.
  2. A purchase on the open market is the strongest sign: the insider spent their own money.
  3. A sale under a trading plan (Rule 10b5-1) says little: its dates were fixed months before. Sales outside a plan say more, but insiders sell for many reasons, such as taxes or a house.
  4. Grants, option exercises and shares held back for tax are left out.
  5. What is a Form 4? · Form 4 codes

What kind of trades

1 purchase worth $9.0M against 59 sales worth $42.2M; 38 of the sales were under plans set months before.

Purchasebought with their own money
Pay in stock, own choiceowed cash, chose shares
Sale outside a planthe insider picked the day
Sale under a plandates fixed months before
Says littlecompany plans, board pay, cash units
Bought
1 open market
Sold
21 outside a plan38 under a plan

Every Form 4 line of the last twelve months, counted by kind. The grades come from the filing itself: whether the insider paid cash, whether a plan set the date, whether pay was taken in stock by choice.

Insider trades on the share price

last twelve months

43 marks over twelve months, each in its grade: solid for the stronger signs, hollow or grey for the ones that say little.

PurchasePay in stock, own choiceSale outside a planSale under a planSays little

The blue line is the daily close over twelve months. Each mark is one insider's trades on one day, on that day's price, sized by dollar value. Solid marks are the stronger signs; hollow and grey marks say little. Hover or tap a mark for who, how much and why.

Trades worth a closer look

A purchase stands out when two or more of these hold: a senior insider, several insiders buying within 90 days, a fall of 10% or more in the three months before, or over $1 million. A sale outside a plan is judged the same way. These are the Feed's rules.

Who traded

dollars, twelve months

8 insiders traded. The most: Peetz Christopher, sale outside a plan $6.0M; sale under a plan $10.3M.

One row per insider, sold to the left and bought to the right, split by grade: the paler part of a bar is the part that says little.

How it compares

every company on the site

Open-market sales, twelve months

Open-market purchases, twelve months

    The bar ranks every company on the site from the lowest on the left to the highest on the right, in three equal thirds; the small figures under it are the values where each third starts, and the black tick is the middle company. The orange dot is this company; the grey ticks are the other companies in its industry (hover or tap for names). A hatched block is companies tied at none.

    Every Form 4 line

    Purchase: bought on the open market with their own moneyTook pay in stock, own choice: owed cash, chose shares instead; a softer signSale: sold on the open market, not under a plan set in advanceSale, trading plan: under a Rule 10b5-1 plan set up months before, so the date was fixed in advanceGrey lines: plan purchases, pay in stock taken by the whole board or under a company plan, and units paid in cash; they say little about the insider's own view
    TradedInsiderRoleTypeSharesPriceValueFiling
    14 September 2026Bjerkholt EricChief Financial OfficerSaleafter a 4% fall over three months · 25% below its one-year high · Form 144 notice 15 September 20269,943$98.37$978,093Form 4
    2 September 2026Howe JolandaSVP, Global ControllerSaletrading plan set in advance · Form 144 notice 2 September 2026658$100.00$65,800Form 4
    1 September 2026Peetz ChristopherChief Executive OfficerSaletrading plan set in advance · Form 144 notice 1 September 20268,312$98.08$815,241Form 4
    1 September 2026Peetz ChristopherChief Executive OfficerSaletrading plan set in advance · Form 144 notice 1 September 202621,688$98.91$2.1 millionForm 4
    18 August 2026Howe JolandaSVP, Global ControllerSaleafter a 5% rise over three months · 22% below its one-year high · Form 144 notice 18 August 202640,000$100.00$4.0 millionForm 4
    11 August 2026Bjerkholt EricChief Financial OfficerSaletrading plan set in advance · Form 144 notice 11 August 20266,001$99.90$599,510Form 4
    10 August 2026Peetz ChristopherChief Executive OfficerSaletrading plan set in advance · Form 144 notice 10 August 202611,683$98.51$1.2 millionForm 4
    10 August 2026Peetz ChristopherChief Executive OfficerSaletrading plan set in advance · Form 144 notice 10 August 20266,017$99.25$597,187Form 4
    10 August 2026Peetz ChristopherChief Executive OfficerSaletrading plan set in advance · Form 144 notice 10 August 20262,300$100.14$230,322Form 4
    3 August 2026Howe JolandaSVP, Global ControllerSaletrading plan set in advance · Form 144 notice 3 August 20261,840$105.29$193,734Form 4
    6 July 2026Peetz ChristopherChief Executive OfficerSaletrading plan set in advance · Form 144 notice 6 July 202612,134$121.65$1.5 millionForm 4
    6 July 2026Peetz ChristopherChief Executive OfficerSaletrading plan set in advance · Form 144 notice 6 July 20264,181$122.34$511,504Form 4
    6 July 2026Peetz ChristopherChief Executive OfficerSaletrading plan set in advance · Form 144 notice 6 July 20261,975$123.74$244,386Form 4
    6 July 2026Peetz ChristopherChief Executive OfficerSaletrading plan set in advance · Form 144 notice 6 July 20261,710$124.79$213,391Form 4
    6 July 2026Bjerkholt EricChief Financial OfficerSaletrading plan set in advance · Form 144 notice 6 July 20263,124$121.67$380,097Form 4
    6 July 2026Bjerkholt EricChief Financial OfficerSaletrading plan set in advance · Form 144 notice 6 July 20261,048$122.43$128,307Form 4
    6 July 2026Bjerkholt EricChief Financial OfficerSaletrading plan set in advance · Form 144 notice 6 July 2026528$123.84$65,388Form 4
    6 July 2026Bjerkholt EricChief Financial OfficerSaletrading plan set in advance · Form 144 notice 6 July 2026300$124.94$37,482Form 4
    1 July 2026Howe JolandaSVP, Global ControllerSaletrading plan set in advance · Form 144 notice 1 July 20262,721$120.00$326,520Form 4
    17 June 2026Howe JolandaSVP, Global ControllerSaletrading plan set in advance · Form 144 notice 17 June 20262,594$101.95$264,458Form 4
    8 June 2026Bjerkholt EricChief Financial OfficerSaletrading plan set in advance · Form 144 notice 8 June 20262,258$92.84$209,633Form 4
    8 June 2026Bjerkholt EricChief Financial OfficerSaletrading plan set in advance · Form 144 notice 8 June 20261,175$93.95$110,391Form 4
    8 June 2026Bjerkholt EricChief Financial OfficerSaletrading plan set in advance · Form 144 notice 8 June 20261,567$95.12$149,053Form 4
    1 June 2026Peetz ChristopherChief Executive OfficerSaletrading plan set in advance · Form 144 notice 1 June 20262,602$94.64$246,253Form 4
    1 June 2026Peetz ChristopherChief Executive OfficerSaletrading plan set in advance · Form 144 notice 1 June 202616,595$95.34$1.6 millionForm 4
    1 June 2026Peetz ChristopherChief Executive OfficerSaletrading plan set in advance · Form 144 notice 1 June 20266,926$96.15$665,935Form 4
    1 June 2026Peetz ChristopherChief Executive OfficerSaletrading plan set in advance · Form 144 notice 1 June 20261,973$97.56$192,486Form 4
    1 June 2026Peetz ChristopherChief Executive OfficerSaletrading plan set in advance · Form 144 notice 1 June 20261,021$98.20$100,262Form 4
    1 June 2026Peetz ChristopherChief Executive OfficerSaletrading plan set in advance · Form 144 notice 1 June 2026883$99.66$88,000Form 4
    1 June 2026Ramasastry SairaDirectorSaleafter a 7% rise over three months · 14% below its one-year high · Form 144 notice 1 June 20263,977$100.00$397,700Form 4
    15 May 2026Ramasastry SairaDirectorSaletrading plan set in advance · Form 144 notice 15 May 20262,000$109.47$218,940Form 4
    15 April 2026Ramasastry SairaDirectorSaletrading plan set in advance · Form 144 notice 15 April 20262,000$96.90$193,800Form 4
    16 March 2026Bjerkholt EricChief Financial OfficerSaleafter a 45% rise over three months · 15% below its one-year high · Form 144 notice 17 March 20267,287$91.98$670,243Form 4
    16 March 2026Quan JoanneChief Medical OfficerSaleafter a 45% rise over three months · 15% below its one-year high · Form 144 notice 17 March 20267,287$91.98$670,243Form 4
    16 March 2026Ramasastry SairaDirectorSaletrading plan set in advance · Form 144 notice 16 March 20262,000$90.76$181,520Form 4
    16 March 2026Radovich PeterPresident AND COOSaleafter a 45% rise over three months · 15% below its one-year high · Form 144 notice 17 March 202616,515$91.98$1.5 millionForm 4
    16 March 2026Howe JolandaSVP, Global ControllerSaleafter a 45% rise over three months · 15% below its one-year high · Form 144 notice 17 March 20264,732$91.98$435,239Form 4
    16 March 2026Peetz ChristopherChief Executive OfficerSaleafter a 45% rise over three months · 15% below its one-year high · Form 144 notice 17 March 202640,985$91.98$3.8 millionForm 4
    13 February 2026Ramasastry SairaDirectorSaletrading plan set in advance · Form 144 notice 13 February 20262,000$102.09$204,180Form 4
    2 February 2026Radovich PeterPresident AND COOSaleafter a 47% rise over three months · at its one-year high · Form 144 notice 2 February 20262,631$103.30$271,792Form 4
    2 February 2026Peetz ChristopherChief Executive OfficerSaleafter a 47% rise over three months · at its one-year high · Form 144 notice 2 February 20269,108$103.30$940,888Form 4
    2 February 2026Howe JolandaSVP, Global ControllerSaleafter a 47% rise over three months · at its one-year high · Form 144 notice 2 February 2026968$103.30$99,998Form 4
    26 January 2026Bjerkholt EricChief Financial OfficerSaleafter a 35% rise over three months · at its one-year high1,053$96.19$101,290Form 4
    26 January 2026Radovich PeterPresident AND COOSaleafter a 35% rise over three months · at its one-year high3,143$96.19$302,331Form 4
    26 January 2026Howe JolandaSVP, Global ControllerSaleafter a 35% rise over three months · at its one-year high842$96.19$80,994Form 4
    26 January 2026Peetz ChristopherChief Executive OfficerSaleafter a 35% rise over three months · at its one-year high6,831$96.19$657,088Form 4
    23 January 2026Heron Patrick J, by Frazier Life Sciences X, L.P.DirectorPurchaseafter a 35% rise over three months · at its one-year high131,425$68.48$9.0 millionForm 4
    22 January 2026Howe JolandaSVP, Global ControllerSaleafter a 38% rise over three months · at its one-year high926$93.33$86,419Form 4
    22 January 2026Quan JoanneChief Medical OfficerSaleafter a 38% rise over three months · at its one-year high1,822$93.33$170,039Form 4
    22 January 2026Bjerkholt EricChief Financial OfficerSaleafter a 38% rise over three months · at its one-year high1,421$93.33$132,615Form 4
    22 January 2026Radovich PeterPresident AND COOSaleafter a 38% rise over three months · at its one-year high2,382$93.33$222,301Form 4
    22 January 2026Peetz ChristopherChief Executive OfficerSaleafter a 38% rise over three months · at its one-year high7,098$93.33$662,422Form 4
    20 January 2026Quan JoanneChief Medical OfficerSaleafter a 33% rise over three months · at its one-year high6,911$90.27$623,853Form 4
    15 January 2026Ramasastry SairaDirectorSaletrading plan set in advance · Form 144 notice 15 January 20262,000$90.99$181,980Form 4
    22 December 2025Ramasastry SairaDirectorSaletrading plan set in advance · Form 144 notice 22 December 20255,000$80.00$400,000Form 4
    19 December 2025Grey Michael GDirectorSaletrading plan set in advance · Form 144 notice 19 December 202550,000$78.00$3.9 millionForm 4
    18 December 2025Ramasastry SairaDirectorSaletrading plan set in advance · Form 144 notice 18 December 20251,000$69.46$69,460Form 4
    18 December 2025Ramasastry SairaDirectorSaletrading plan set in advance · Form 144 notice 18 December 20251,000$70.00$70,000Form 4
    1 December 2025Grey Michael GDirectorSaletrading plan set in advance · Form 144 notice 1 December 202550,000$74.00$3.7 millionForm 4
    21 November 2025Grey Michael GDirectorSaletrading plan set in advance · Form 144 notice 21 November 202550,000$70.00$3.5 millionForm 4
    A filing with several lines appears once per line.
    Read morePay taken in stock by the insider's own choice has the filing's footnote, word for word, in the note under it; for the others, hold the pointer on the type. An award filed at no price shows n/a.