Sibold William John — Insider Trades & Holdings | InsiderBid

Sibold William John

Form 4 filings across 1 company. Net figures count open-market buys and sales only. EDGAR profile ↗

Lifetime net: -$16.8M

Positions by company

Reported holding is the most recent post-transaction share count on a Table I row.

Every company this insider has reported trading in, with the value bought and sold at each and the date they last traded.
Ticker	Company	Bought	Sold	Net	Shares held	Last trade
MDGL	Madrigal Pharmaceuticals, INC.	$0	$16.8M	-$16.8M	197,746	Sep 11

Madrigal Pharmaceuticals, INC.

-$16.8M

Bought

$0

Sold

$16.8M

Held

197,746

Filing record

How quickly this filer reports. Section 16 allows two business days from the transaction.

All 4 filings we hold were filed within the two-business-day deadline.

Counted in business days from the transaction date, or the deemed execution date where the filing reports one, excluding weekends and federal holidays. How this is measured · All late filings

Trade history

The 46 most recent Form 4 transactions.

Insider transactions, newest first: date, security, transaction type, size and a link to the filing each row came from.
Date	Ticker	Company	Type	Shares	Price	Value	Δ Own	Filing
Sep 11	MDGL	Madrigal Pharmaceuticals,…	SSELL◷	120	$546.38	$65.6K	<0.1%	Open the original filing on SEC.gov
Sep 11	MDGL	Madrigal Pharmaceuticals,…	SSELL◷	761	$544.83	$414.6K	-0.4%

MDGLSSELL◷$65.6K

Madrigal Pharmaceuticals,…Sep 11

120 sh @ $546.38 · <0.1% own

MDGLSSELL◷$414.6K

Madrigal Pharmaceuticals,…Sep 11

761 sh @ $544.83 · -0.4% own

MDGLSSELL◷$837.3K

Madrigal Pharmaceuticals,…Sep 11

1,539 sh @ $544.02 · -0.8% own

MDGLSSELL◷$652.2K

Madrigal Pharmaceuticals,…Sep 11

1,202 sh @ $542.60 · -0.6% own

MDGLSSELL◷$199.3K

Madrigal Pharmaceuticals,…Sep 11

368 sh @ $541.64 · -0.2% own

MDGLSSELL◷$371.4K

Madrigal Pharmaceuticals,…Sep 11

687 sh @ $540.59 · -0.3% own

MDGLSSELL◷$86K

Madrigal Pharmaceuticals,…Sep 11

160 sh @ $537.62 · <0.1% own

MDGLSSELL◷$116.8K

Madrigal Pharmaceuticals,…Sep 11

218 sh @ $535.94 · -0.1% own

MDGLSSELL◷$56.6K

Madrigal Pharmaceuticals,…Sep 11

106 sh @ $534.06 · <0.1% own

MDGLSSELL◷$32K

Madrigal Pharmaceuticals,…Sep 11

60 sh @ $533.09 · <0.1% own

MDGLSSELL◷$86.8K

Madrigal Pharmaceuticals,…Sep 9

160 sh @ $542.55 · <0.1% own

MDGLSSELL◷$196.1K

Madrigal Pharmaceuticals,…Sep 9

362 sh @ $541.65 · -0.2% own

MDGLSSELL◷$272.8K

Madrigal Pharmaceuticals,…Sep 9

505 sh @ $540.19 · -0.3% own

MDGLSSELL◷$115.9K

Madrigal Pharmaceuticals,…Sep 9

215 sh @ $539.03 · -0.1% own

MDGLSSELL◷$279.9K

Madrigal Pharmaceuticals,…Sep 9

520 sh @ $538.30 · -0.3% own

MDGLSSELL◷$343.8K

Madrigal Pharmaceuticals,…Sep 9

640 sh @ $537.17 · -0.3% own

MDGLSSELL◷$557.6K

Madrigal Pharmaceuticals,…Sep 9

1,040 sh @ $536.11 · -0.5% own

MDGLSSELL◷$344.7K

Madrigal Pharmaceuticals,…Sep 9

644 sh @ $535.27 · -0.3% own

MDGLSSELL◷$211.5K

Madrigal Pharmaceuticals,…Sep 9

396 sh @ $534.20 · -0.2% own

MDGLSSELL◷$272.9K

Madrigal Pharmaceuticals,…Sep 9

512 sh @ $533.09 · -0.3% own

MDGLSSELL◷$195.8K

Madrigal Pharmaceuticals,…Sep 9

368 sh @ $531.99 · -0.2% own

MDGLSSELL◷$276.8K

Madrigal Pharmaceuticals,…Sep 9

522 sh @ $530.23 · -0.3% own

MDGLSSELL◷$183.7K

Madrigal Pharmaceuticals,…Sep 9

347 sh @ $529.27 · -0.2% own

MDGLSSELL◷$69.2K

Madrigal Pharmaceuticals,…Sep 9

131 sh @ $527.88 · <0.1% own

MDGLSSELL$155.4K

Madrigal Pharmaceuticals,…Jul 20

280 sh @ $555.05 · -0.1% own

MDGLSSELL$551

Madrigal Pharmaceuticals,…Jul 20

1 sh @ $550.72 · 0.0% own

MDGLSSELL$84.2K

Madrigal Pharmaceuticals,…Jul 20

153 sh @ $550.01 · <0.1% own

MDGLSSELL$25.8K

Madrigal Pharmaceuticals,…Jul 20

47 sh @ $548.87 · <0.1% own

MDGLSSELL$372.4K

Madrigal Pharmaceuticals,…Jul 20

680 sh @ $547.70 · -0.3% own

MDGLSSELL$147.2K

Madrigal Pharmaceuticals,…Jul 20

269 sh @ $547.08 · -0.1% own

MDGLSSELL$150.1K

Madrigal Pharmaceuticals,…Jul 20

275 sh @ $545.71 · -0.1% own

MDGLSSELL$296.9K

Madrigal Pharmaceuticals,…Jul 20

545 sh @ $544.71 · -0.3% own

MDGLSSELL$59.8K

Madrigal Pharmaceuticals,…Jul 20

110 sh @ $543.79 · <0.1% own

MDGLSSELL$76K

Madrigal Pharmaceuticals,…Jul 20

140 sh @ $542.75 · <0.1% own

MDGLMEXER◆—

Madrigal Pharmaceuticals,…Jul 17

50,000 sh

MDGLMEXER—

Madrigal Pharmaceuticals,…Jul 17

50,000 sh · +30.9% own

MDGLSSELL$718.3K

Madrigal Pharmaceuticals,…Mar 6

1,663 sh @ $431.94 · -1.0% own

MDGLAGRANT◆—

Madrigal Pharmaceuticals,…Mar 4

18,743 sh

MDGLAGRANT—

Madrigal Pharmaceuticals,…Mar 4

14,995 sh · +10.1% own

MDGLSSELL$776.5K

Madrigal Pharmaceuticals,…Jan 26

1,577 sh @ $492.42 · -1.1% own

MDGLSSELL$1.4M

Madrigal Pharmaceuticals,…Dec 4, 2025

2,400 sh @ $575.34 · -1.6% own

MDGLMEXER◆—

Madrigal Pharmaceuticals,…Dec 3, 2025

50,000 sh

MDGLMEXER—

Madrigal Pharmaceuticals,…Dec 3, 2025

50,000 sh · +48.8% own

MDGLSSELL$3.2M

Madrigal Pharmaceuticals,…Sep 9, 2025

7,279 sh @ $445.63 · -6.6% own

MDGLSSELL◷$453.5K

Madrigal Pharmaceuticals,…Aug 21, 2025

1,131 sh @ $401.00 · -1.0% own

MDGLSSELL◷$2.6M

Madrigal Pharmaceuticals,…Aug 21, 2025

6,485 sh @ $400.03 · -5.5% own