The sale is pre-planned (options exercise) and moderate in size relative to market cap. Watch for actual Form 4 filings post-execution to confirm completion. No immediate catalyst; likelihood of a block trade affecting price is low given the small relative size.
Price Chart
Executive Summary
Director John Quisel filed a Form 144 notice of intent to sell 34,000 shares of Disc Medicine (IRON), valued at approximately $2.39M based on the filing date. The shares are from the exercise of stock options, and the sale is planned as a cash transaction through Morgan Stanley. While a $2.39M sale by a director is notable, it is not an executive-chair-level event and may be part of routine portfolio diversification.
Key Facts
- Director John D. Quisel filed a Form 144 on June 18, 2026, signaling intent to sell 34,000 shares.
- The estimated aggregate value of the proposed sale is $2,387,140 (based on shares × price on filing date).
- Shares are from the exercise of stock options, not direct open-market accumulation.
- The sale would represent a small fraction of Quisel's total holdings (the filing references total securities outstanding of 38,199,089 shares, but Quisel's personal holdings are not disclosed in this filing).
- Recent insider activity on IRON: one other sell totaling $801K in the prior 30 days, with no buys.
Financial Impact
$2.39M proposed sale by a director, representing approximately 0.09% of the company's $2.7B market cap.
Risk Factors
- Insider selling ahead of potential clinical data readouts or regulatory decisions could signal lack of conviction; however, there is no evidence of such timing here.
- If the sale is completed and followed by additional director sales, it may indicate increasing insider distribution.
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 3 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| 144 Filing (Primary) | 0001950047-26-006325 |
| Document: 0001950047-26-006325-index.html | 0001950047-26-006325 |
| Document: 0001950047-26-006325.txt | 0001950047-26-006325 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Sep 10, 2026 22d ago | 8-K | $74.14 $69.18 | ▼ −6.69% | ▼ −6.19% | $64.48 (−13.03%) |
Sep 9, 2026 22d ago | Press Release | $74.14 $69.18 | ▼ −6.69% | ▼ −6.19% | $64.48 (−13.03%) |
Sep 3, 2026 28d ago | Insider Cluster | $79.23 $68.92 | ▲ +13.01% | ▲ +11.80% | $64.48 (+18.62%) |
Sep 2, 2026 29d ago | 144 | $79.37 $70.06 | ▼ −11.73% | ▼ −10.58% | $64.48 (−18.76%) |
Aug 27, 2026 5w ago | Insider Cluster | $82.55 $79.37 | ▼ −3.85% | ▼ −4.12% | $64.48 (−21.89%) |
Aug 18, 2026 6w ago | Insider Cluster | $80.32 $82.67 | ▲ +2.93% | ▲ +3.31% | $64.48 (−19.72%) |
Aug 14, 2026 6w ago | Insider Cluster | $80.05 $80.94 | ▲ +1.11% | ▲ +2.30% | $64.48 (−19.45%) |
Jul 30, 2026 9w ago | 8-K | $79.21 $77.44 | ▼ −2.23% | ▼ −5.86% | $64.48 (−18.60%) |
Jul 30, 2026 9w ago | Press Release | $79.21 $77.44 | ▼ −2.23% | ▼ −5.86% | $64.48 (−18.60%) |
Jul 14, 2026 11w ago | Insider Cluster | $76.02 $74.32 | ▼ −2.24% | ▼ −1.26% | $64.48 (−15.18%) |
US Market Status
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