GREY MICHAEL G (Executive Chairman) sold 50K shares of MIRUM PHARMACEUTICALS, INC. on the open market
Open‑market sale worth $3.90M. Review remaining holdings and any 10b5‑1 plan disclosures.
S · 1 sale
Filed: 12/23/2025ACC: 0001240122-25-000011
DirectorOfficer· Executive Chairman
Since Jul 2019
-50K
Net shares
Net seller
$3.90M
Total sold
1
Open market trades
0B · 1S
3
Total transactions
50K acquired · 100K disposed
Non-Derivative Transactions2
Common Stock
Direct
Shares
+50K
Price / share
$2.94
Trade value
$146.80K
% of position
New position
12/19/2025
0.00→50K
Common Stock
Direct
Shares
−50K
Price / share
$78.00
Trade value
$3.90M
% of position
New position
12/19/2025
50K→0.00
Total
Net shares
+0.00
Net value
-$3.75M
| Security | Date | Type | Shares | Price / Share | Trade Value | % of Position | Held Before | Held After |
|---|---|---|---|---|---|---|---|---|
| Common Stock Direct | 12/19/2025 | M · Option Exercise | +50K | $2.94 | $146.80K | New position | 0.00 | 50K |
| Common Stock Direct | 12/19/2025 | S · Sale | −50K | $78.00 | $3.90M | New position | 50K | 0.00 |
| Total | +0.00 | -$3.75M | ||||||
Derivative Transactions1
Stock Option (right to buy)
Direct
Converts to
Common Stock
50K shares
Shares
−50K
Strike price
2.936
Held after
181.18K
Exercisable
—
12/19/2025
| Security | Converts To | Date | Type | Shares | Strike Price | Exercisable | Held After |
|---|---|---|---|---|---|---|---|
| Stock Option (right to buy) Direct | Common Stock50K shares | 12/19/2025 | M · Option Exercise | −50K | 2.936 | — | 181.18K |
Non-Derivative Holdings (Post-Transaction)2
Common Stock
IndirectShares owned186.41K
Common Stock
IndirectShares owned93.75K
Total
280.16K indirect280.16K
| Security Title | Shares Owned | Ownership Type |
|---|---|---|
| Common Stock | 186.41K | Indirect |
| Common Stock | 93.75K | Indirect |
| Total | 280.16K | 280.16K indirect |
Derivative Holdings (Post-Transaction)0
No derivative holdings reported