Mirum Pharmaceuticals (MIRM) SVP exercises 40k options, sells shares
Rhea-AI Filing Summary
Mirum Pharmaceuticals, Inc. (MIRM) reported insider equity transactions by Jolanda Howe, its SVP, Global Controller. On 2026-08-18, Howe exercised 40,000 employee stock options at an exercise price of $6.27 per share, acquiring an equal number of common shares. On the same date, she sold 40,000 common shares at $100.00 per share in a transaction described as a sale in an open market or private transaction. The option grant was fully vested at the time of exercise, and the option position reported in this filing was reduced to zero.
Positive
- None.
Negative
- None.
Insider Trade Summary
Exercise and Sale: 40,000 shares ($3.75M approx. pre-tax spread)
Exercise and Sale
3 txns
Insider
Howe Jolanda
Role
SVP, GLOBAL CONTROLLER
Sold
40,000 shs ($4.00M)
Approx. gross sale proceeds
$4.00M
Approx. exercise cost
$251K
Approx. pre-tax spread
$3.75M
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Exercise | Employee Stock Option (right to buy) F1 | 40,000 | $0.00 | $0.00 |
| Exercise | Common Stock | 40,000 | $6.27 | $251K |
| Sale | Common Stock | 40,000 | $100.00 | $4.00M |
Holdings After Transaction:
Employee Stock Option (right to buy) — 0 shares (Direct);
Common Stock — 1,274 shares (Direct)
Footnotes (1)
- F1. The stock option is fully vested.
Key Figures
Options Exercised: 40,000 shares
Exercise Price: $6.27 per share
Shares Sold: 40,000 shares
+2 more
5 metrics
Options Exercised
40,000 shares
Employee stock options exercised by Jolanda Howe on 2026-08-18
Exercise Price
$6.27 per share
Exercise price of employee stock options exercised on 2026-08-18
Shares Sold
40,000 shares
Mirum common stock sold by Jolanda Howe on 2026-08-18
Sale Price
$100.00 per share
Per-share price for sale of common stock on 2026-08-18
Options Remaining from Grant
0 shares
Total shares underlying the reported stock option following exercise
Key Terms
Employee Stock Option, derivative security, open market or private transaction
3 terms
Employee Stock Option financial
"security_title: "Employee Stock Option (right to buy)""
An employee stock option is a promise that lets a worker buy company shares later at a predetermined price, often after they stay for a certain period or meet performance goals — think of it like a coupon that locks in today's price for a future purchase. It matters to investors because options align employees’ incentives with company performance, can increase the number of shares outstanding (dilution) when exercised, and represent a compensation cost that affects reported profits and shareholder value.
derivative security financial
"transaction_action: "derivative exercise/conversion""
A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.
open market or private transaction financial
"transaction_code_description: "Sale in open market or private transaction""
FAQ
What insider transaction did Mirum Pharmaceuticals (MIRM) report for Jolanda Howe?
Mirum Pharmaceuticals reported that Jolanda Howe exercised 40,000 stock options and sold 40,000 common shares on 2026-08-18. The transactions involved exercising options at $6.27 per share and selling the resulting shares at $100.00 per share.
How many Mirum Pharmaceuticals (MIRM) options did Jolanda Howe exercise?
Jolanda Howe exercised 40,000 employee stock options in Mirum Pharmaceuticals. These options had an exercise price of $6.27 per share and were fully vested, resulting in the acquisition of 40,000 Mirum common shares before the same-day sale.
At what prices were Jolanda Howe’s Mirum (MIRM) transactions executed?
Jolanda Howe exercised options at an exercise price of $6.27 per share and sold the resulting Mirum common shares at $100.00 per share. Both transactions occurred on 2026-08-18, according to the Form 4 data.
What happened to Jolanda Howe’s Mirum (MIRM) stock option position after the transactions?
Following the reported transactions, the stock option position associated with the 40,000 options was reduced to 0 shares. The Form 4 shows no remaining holdings for that specific option grant after the 2026-08-18 exercise.
Were Jolanda Howe’s Mirum (MIRM) trades under a Rule 10b5-1 plan?
The filing indicates the Rule 10b5-1 checkbox was not affirmed for these transactions. There is no footnote stating that the 2026-08-18 exercise and sale were made pursuant to a pre-arranged Rule 10b5-1 trading plan.
AI-generated analysis. How Rhea-AI works. Not financial advice.
