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MDGL · MADRIGAL PHARMACEUTICALS, INC.

Everything on this page is public record — SEC Form 4 filings and congressional disclosures — alongside any INSIDER SCANNER research case for this company.

Open-market buys0
Open-market sells25
Research cases0
Last filing2026-09-11

Insider flow: Selling only — a count of disclosed transactions, not a rating or a recommendation.

Insider transaction timeline

Every reported transaction, positioned by trade date. Purchases sit above the axis, sales below; circle area is proportional to dollar value. No share-price line is drawn — this feed carries transaction prices only, and a price history inferred from them would imply market data the filings do not contain.

Open-market purchase Open-market sale
2026-08-17 — Kelley Shannon T · sold 664 @ $514.97 2026-09-09 — Sibold William John · sold 1,040 @ $536.11 2026-09-09 — Sibold William John · sold 131 @ $527.88 2026-09-09 — Sibold William John · sold 160 @ $542.55 2026-09-09 — Sibold William John · sold 215 @ $539.03 2026-09-09 — Sibold William John · sold 347 @ $529.27 2026-09-09 — Sibold William John · sold 362 @ $541.65 2026-09-09 — Sibold William John · sold 368 @ $531.99 2026-09-09 — Sibold William John · sold 396 @ $534.20 2026-09-09 — Sibold William John · sold 505 @ $540.19 2026-09-09 — Sibold William John · sold 512 @ $533.09 2026-09-09 — Sibold William John · sold 520 @ $538.30 2026-09-09 — Sibold William John · sold 522 @ $530.23 2026-09-09 — Sibold William John · sold 640 @ $537.17 2026-09-09 — Sibold William John · sold 644 @ $535.27 2026-09-11 — Sibold William John · sold 106 @ $534.06 2026-09-11 — Sibold William John · sold 120 @ $546.38 2026-09-11 — Sibold William John · sold 1,202 @ $542.60 2026-09-11 — Sibold William John · sold 1,539 @ $544.02 2026-09-11 — Sibold William John · sold 160 @ $537.62 2026-09-11 — Sibold William John · sold 218 @ $535.94 2026-09-11 — Sibold William John · sold 368 @ $541.64 2026-09-11 — Sibold William John · sold 60 @ $533.09 2026-09-11 — Sibold William John · sold 687 @ $540.59 2026-09-11 — Sibold William John · sold 761 @ $544.83
2026-08-172026-09-11

Insider participation

One row per insider, one cell per reported transaction, shaded by value. Repeat buying and activity clustered in time are visible at a glance.

Sibold William John President and CEO, Director
Kelley Shannon T General Counsel
Included with a free account

The analysis built on top of these filings

The filings above are public record and stay public here. What an account adds for $MDGL is the reading of them — and for this company, that is what the list below says it is, no more.

  • Transaction timelineThe [{'transaction_date': '2026-09-11', 'insider_name': 'Sibold William John', 'insider_title': 'President and CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 106.0, 'price': 534.06, 'value': 56610.36, 'is_buy': False}, {'transaction_date': '2026-09-11', 'insider_name': 'Sibold William John', 'insider_title': 'President and CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 120.0, 'price': 546.38, 'value': 65565.6, 'is_buy': False}, {'transaction_date': '2026-09-11', 'insider_name': 'Sibold William John', 'insider_title': 'President and CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 1202.0, 'price': 542.6, 'value': 652205.2, 'is_buy': False}, {'transaction_date': '2026-09-11', 'insider_name': 'Sibold William John', 'insider_title': 'President and CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 1539.0, 'price': 544.02, 'value': 837246.78, 'is_buy': False}, {'transaction_date': '2026-09-11', 'insider_name': 'Sibold William John', 'insider_title': 'President and CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 160.0, 'price': 537.62, 'value': 86019.2, 'is_buy': False}, {'transaction_date': '2026-09-11', 'insider_name': 'Sibold William John', 'insider_title': 'President and CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 218.0, 'price': 535.94, 'value': 116834.92, 'is_buy': False}, {'transaction_date': '2026-09-11', 'insider_name': 'Sibold William John', 'insider_title': 'President and CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 368.0, 'price': 541.64, 'value': 199323.52, 'is_buy': False}, {'transaction_date': '2026-09-11', 'insider_name': 'Sibold William John', 'insider_title': 'President and CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 60.0, 'price': 533.09, 'value': 31985.4, 'is_buy': False}, {'transaction_date': '2026-09-11', 'insider_name': 'Sibold William John', 'insider_title': 'President and CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 687.0, 'price': 540.59, 'value': 371385.33, 'is_buy': False}, {'transaction_date': '2026-09-11', 'insider_name': 'Sibold William John', 'insider_title': 'President and CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 761.0, 'price': 544.83, 'value': 414615.63, 'is_buy': False}, {'transaction_date': '2026-09-09', 'insider_name': 'Sibold William John', 'insider_title': 'President and CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 1040.0, 'price': 536.11, 'value': 557554.4, 'is_buy': False}, {'transaction_date': '2026-09-09', 'insider_name': 'Sibold William John', 'insider_title': 'President and CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 131.0, 'price': 527.88, 'value': 69152.28, 'is_buy': False}, {'transaction_date': '2026-09-09', 'insider_name': 'Sibold William John', 'insider_title': 'President and CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 160.0, 'price': 542.55, 'value': 86808.0, 'is_buy': False}, {'transaction_date': '2026-09-09', 'insider_name': 'Sibold William John', 'insider_title': 'President and CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 215.0, 'price': 539.03, 'value': 115891.45, 'is_buy': False}, {'transaction_date': '2026-09-09', 'insider_name': 'Sibold William John', 'insider_title': 'President and CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 347.0, 'price': 529.27, 'value': 183656.69, 'is_buy': False}, {'transaction_date': '2026-09-09', 'insider_name': 'Sibold William John', 'insider_title': 'President and CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 362.0, 'price': 541.65, 'value': 196077.3, 'is_buy': False}, {'transaction_date': '2026-09-09', 'insider_name': 'Sibold William John', 'insider_title': 'President and CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 368.0, 'price': 531.99, 'value': 195772.32, 'is_buy': False}, {'transaction_date': '2026-09-09', 'insider_name': 'Sibold William John', 'insider_title': 'President and CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 396.0, 'price': 534.2, 'value': 211543.2, 'is_buy': False}, {'transaction_date': '2026-09-09', 'insider_name': 'Sibold William John', 'insider_title': 'President and CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 505.0, 'price': 540.19, 'value': 272795.95, 'is_buy': False}, {'transaction_date': '2026-09-09', 'insider_name': 'Sibold William John', 'insider_title': 'President and CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 512.0, 'price': 533.09, 'value': 272942.08, 'is_buy': False}, {'transaction_date': '2026-09-09', 'insider_name': 'Sibold William John', 'insider_title': 'President and CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 520.0, 'price': 538.3, 'value': 279916.0, 'is_buy': False}, {'transaction_date': '2026-09-09', 'insider_name': 'Sibold William John', 'insider_title': 'President and CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 522.0, 'price': 530.23, 'value': 276780.06, 'is_buy': False}, {'transaction_date': '2026-09-09', 'insider_name': 'Sibold William John', 'insider_title': 'President and CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 640.0, 'price': 537.17, 'value': 343788.8, 'is_buy': False}, {'transaction_date': '2026-09-09', 'insider_name': 'Sibold William John', 'insider_title': 'President and CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 644.0, 'price': 535.27, 'value': 344713.88, 'is_buy': False}, {'transaction_date': '2026-08-17', 'insider_name': 'Kelley Shannon T', 'insider_title': 'General Counsel', 'transaction_type': 'Open-market sell', 'shares': 664.0, 'price': 514.97, 'value': 341940.08, 'is_buy': False}] reported transactions plotted over the window rather than listed, so concentration is visible.

Not available for MDGL today: no reported open-market purchases in this window, so there is no insider cost basis to compute; no research case — nothing here has cleared the scoring threshold. Both appear on this page on their own if that changes.

A free account opens all of it.

Not financial advice. This page reports public filings and past research output. It is not a recommendation to buy or sell, and no price target here is a prediction. Trade at your own risk.