Insider · CIK 0001518611
William John Sibold
ceopresidentofficerdirector
Files at MDGL (MADRIGAL PHARMACEUTICALS, INC.). First filing Sep 11, 2026, latest Sep 11, 2026.
Track record
Not enough history
Fewer than three past buys with six months of prices.
Median 6-month excess
-
after past buys, n = 0
Hit rate
-
past buys that beat the index over 6 months
Open-market trades
0 / 1
$0 bought, $6.2M sold
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
MDGL: MADRIGAL PHARMACEUTICALS, INC.
MDGLOct 9, 2026 · close 471.75
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 30Weak | MADRIGAL PHARMACEUTICALS, INC. | $6.2M 11,583 shares | -6% | - |
Transactions
Every row this insider has filed, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Sep 9, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | SOpen-market sale Common Stock10b5-1 | -131 | $527.88 | $69k | 209,198 | 31 d ago |
| Sep 9, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | SOpen-market sale Common Stock10b5-1 | -347 | $529.27 | $184k | 208,851 | 31 d ago |
| Sep 9, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | SOpen-market sale Common Stock10b5-1 | -522 | $530.23 | $277k | 208,329 | 31 d ago |
| Sep 9, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | SOpen-market sale Common Stock10b5-1 | -368 | $531.99 | $196k | 207,961 | 31 d ago |
| Sep 9, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | SOpen-market sale Common Stock10b5-1 | -512 | $533.09 | $273k | 207,449 | 31 d ago |
| Sep 9, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | SOpen-market sale Common Stock10b5-1 | -396 | $534.20 | $212k | 207,053 | 31 d ago |
| Sep 9, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | SOpen-market sale Common Stock10b5-1 | -644 | $535.27 | $345k | 206,409 | 31 d ago |
| Sep 9, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | SOpen-market sale Common Stock10b5-1 | -1,040 | $536.11 | $558k | 205,369 | 31 d ago |
| Sep 9, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | SOpen-market sale Common Stock10b5-1 | -640 | $537.17 | $344k | 204,729 | 31 d ago |
| Sep 9, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | SOpen-market sale Common Stock10b5-1 | -520 | $538.30 | $280k | 204,209 | 31 d ago |
| Sep 9, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | SOpen-market sale Common Stock10b5-1 | -215 | $539.03 | $116k | 203,994 | 31 d ago |
| Sep 9, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | SOpen-market sale Common Stock10b5-1 | -505 | $540.19 | $273k | 203,489 | 31 d ago |
| Sep 9, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | SOpen-market sale Common Stock10b5-1 | -362 | $541.65 | $196k | 203,127 | 31 d ago |
| Sep 9, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | SOpen-market sale Common Stock10b5-1 | -160 | $542.55 | $87k | 202,967 | 31 d ago |
| Sep 11, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | SOpen-market sale Common Stock10b5-1 | -60 | $533.09 | $32k | 202,907 | 31 d ago |
| Sep 11, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | SOpen-market sale Common Stock10b5-1 | -106 | $534.06 | $57k | 202,801 | 31 d ago |
| Sep 11, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | SOpen-market sale Common Stock10b5-1 | -218 | $535.94 | $117k | 202,583 | 31 d ago |
| Sep 11, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | SOpen-market sale Common Stock10b5-1 | -160 | $537.62 | $86k | 202,423 | 31 d ago |
| Sep 11, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | SOpen-market sale Common Stock10b5-1 | -687 | $540.59 | $371k | 201,736 | 31 d ago |
| Sep 11, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | SOpen-market sale Common Stock10b5-1 | -368 | $541.64 | $199k | 201,368 | 31 d ago |
| Sep 11, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | SOpen-market sale Common Stock10b5-1 | -1,202 | $542.60 | $652k | 200,166 | 31 d ago |
| Sep 11, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | SOpen-market sale Common Stock10b5-1 | -1,539 | $544.02 | $837k | 198,627 | 31 d ago |
| Sep 11, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | SOpen-market sale Common Stock10b5-1 | -761 | $544.83 | $415k | 197,866 | 31 d ago |
| Sep 11, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | SOpen-market sale Common Stock10b5-1 | -120 | $546.38 | $66k | 197,746 | 31 d ago |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.