HERON PATRICK J purchased 40.1% of their position (131.43K shares) of MIRUM PHARMACEUTICALS, INC. on the open market
Open‑market purchase worth $9.00M — a major conviction buy. The strongest form of insider conviction signal.
P · 1 purchase
Filed: 1/27/2026ACC: 0001365617-26-000002
Director10% Owner
Since Jul 2019
+290.70K
Net shares
Net buyer
$9.00M
Total acquired
1
Open market trades
1B · 0S
2
Total transactions
290.70K acquired
Non-Derivative Transactions2
Common Stock
Indirect
Shares
+159.28K
Price / share
—
Trade value
—
% of position
94.6%
1/23/2026
168.31K→327.58K
Common Stock
Indirect
Shares
+131.43K
Price / share
$68.48
Trade value
$9M
% of position
40.1%
1/23/2026
327.58K→459.01K
Total
Net shares
+290.70K
Net value
$9M
| Security | Date | Type | Shares | Price / Share | Trade Value | % of Position | Held Before | Held After |
|---|---|---|---|---|---|---|---|---|
| Common Stock Indirect | 1/23/2026 | J · J | +159.28K | — | — | 94.6% | 168.31K | 327.58K |
| Common Stock Indirect | 1/23/2026 | P · Purchase | +131.43K | $68.48 | $9M | 40.1% | 327.58K | 459.01K |
| Total | +290.70K | $9M | ||||||
Derivative Transactions0
No derivative transactions reported
Non-Derivative Holdings (Post-Transaction)2
Common Stock
DirectShares owned5.70K
Common Stock
IndirectShares owned3.57M
Total
5.70K direct·3.57M indirect3.57M
| Security Title | Shares Owned | Ownership Type |
|---|---|---|
| Common Stock | 5.70K | Direct |
| Common Stock | 3.57M | Indirect |
| Total | 3.57M | 5.70K direct·3.57M indirect |
Derivative Holdings (Post-Transaction)0
No derivative holdings reported