Insider · CIK 0001586788
John D Quisel
ceoofficerdirector
Files at GOSS (Gossamer Bio, Inc.), IRON (Disc Medicine, Inc.). First filing Dec 18, 2024, latest Jul 11, 2025.
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 / 6
$0 bought, $5.4M 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.
IRON: Disc Medicine, Inc.
IRONOct 9, 2026 · close 62.06
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 |
|---|---|---|---|---|---|
| 35Weak | Disc Medicine, Inc. | $1.9M 34,800 shares | -18% | +63% from low-17% from high | |
| 12Weak | Disc Medicine, Inc. | $286k 5,200 shares | -3% | +60% from low-19% from high | |
| 54Moderate | Disc Medicine, Inc. | $304k 5,574 shares | -3% | - | |
| 25Weak | Disc Medicine, Inc. | $806k 13,012 shares | -15% | - | |
| 28Weak | Disc Medicine, Inc. | $1.3M 19,820 shares | -22% | - | |
| 26Weak | Disc Medicine, Inc. | $844k 12,791 shares | -15% | - |
Transactions
Every row this insider has filed, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Sep 23, 2026 | GOSS Gossamer Bio, Inc. | AGrant or award Stock Option (Right to Buy)derivative | +10,000 | $0.00 | $0 | 10,000 | 17 d ago |
| Sep 15, 2026 | IRON Disc Medicine, Inc. | MOption exercise Common Stock | +36,000 | $1.01 | $36k | 262,064 | 26 d ago |
| Sep 15, 2026 | IRON Disc Medicine, Inc. | MOption exercise Stock Option (Right to Buy)derivative | -36,000 | $0.00 | $0 | 150,120 | 26 d ago |
| Sep 9, 2025 | IRON Disc Medicine, Inc. | MOption exercise Common Stock | +10,000 | $1.01 | $10k | 171,828 | Sep 11, 2025 |
| Sep 9, 2025 | IRON Disc Medicine, Inc. | MOption exercise Stock Option (Right to Buy)derivative | -10,000 | $0.00 | $0 | 198,420 | Sep 11, 2025 |
| Jul 9, 2025 | IRON Disc Medicine, Inc. | MOption exercise Common Stock10b5-1 | +34,800 | $9.86 | $343k | 196,628 | Jul 11, 2025 |
| Jul 9, 2025 | IRON Disc Medicine, Inc. | SOpen-market sale Common Stock10b5-1 | -31,207 | $55.23 | $1.7M | 165,421 | Jul 11, 2025 |
| Jul 9, 2025 | IRON Disc Medicine, Inc. | SOpen-market sale Common Stock10b5-1 | -3,593 | $56.20 | $202k | 161,828 | Jul 11, 2025 |
| Jul 9, 2025 | IRON Disc Medicine, Inc. | MOption exercise Stock Option (Right to Buy)derivative10b5-1 | -34,800 | $0.00 | $0 | 115,375 | Jul 11, 2025 |
| Jul 3, 2025 | IRON Disc Medicine, Inc. | MOption exercise Common Stock10b5-1 | +5,200 | $9.86 | $51k | 167,028 | Jul 8, 2025 |
| Jul 3, 2025 | IRON Disc Medicine, Inc. | SOpen-market sale Common Stock10b5-1 | -5,200 | $55.09 | $286k | 161,828 | Jul 8, 2025 |
| Jul 3, 2025 | IRON Disc Medicine, Inc. | MOption exercise Stock Option (Right to Buy)derivative10b5-1 | -5,200 | $0.00 | $0 | 150,175 | Jul 8, 2025 |
| Jun 25, 2025 | GOSS Gossamer Bio, Inc. | AGrant or award Stock Option (Right to Buy)derivative | +115,000 | $0.00 | $0 | 115,000 | Jun 26, 2025 |
| Apr 7, 2025 | IRON Disc Medicine, Inc. | MOption exercise Common Stock | +7,000 | $1.01 | $7,070 | 161,828 | Apr 8, 2025 |
| Apr 7, 2025 | IRON Disc Medicine, Inc. | MOption exercise Stock Option (Right to Buy)derivative | -7,000 | $0.00 | $0 | 208,420 | Apr 8, 2025 |
| Feb 18, 2025 | IRON Disc Medicine, Inc. | SOpen-market sale Common Stock | -5,574 | $54.58 | $304k | 154,828 | Feb 20, 2025 |
| Feb 10, 2025 | IRON Disc Medicine, Inc. | AGrant or award Common Stock | +78,337 | $0.00 | $0 | 160,402 | Feb 12, 2025 |
| Feb 10, 2025 | IRON Disc Medicine, Inc. | AGrant or award Stock Option (Right to Buy)derivative | +117,505 | $0.00 | $0 | 117,505 | Feb 12, 2025 |
| Dec 30, 2024 | IRON Disc Medicine, Inc. | MOption exercise Common Stock10b5-1 | +13,012 | $9.86 | $128k | 85,077 | Jan 2, 2025 |
| Dec 30, 2024 | IRON Disc Medicine, Inc. | SOpen-market sale Common Stock10b5-1 | -11,112 | $61.87 | $687k | 73,965 | Jan 2, 2025 |
| Dec 30, 2024 | IRON Disc Medicine, Inc. | SOpen-market sale Common Stock10b5-1 | -1,900 | $62.41 | $119k | 72,065 | Jan 2, 2025 |
| Dec 31, 2024 | IRON Disc Medicine, Inc. | MOption exercise Common Stock10b5-1 | +10,000 | $1.01 | $10k | 82,065 | Jan 2, 2025 |
| Dec 30, 2024 | IRON Disc Medicine, Inc. | MOption exercise Stock Option (Right to Buy)derivative10b5-1 | -13,012 | $0.00 | $0 | 155,375 | Jan 2, 2025 |
| Dec 31, 2024 | IRON Disc Medicine, Inc. | MOption exercise Stock Option (Right to Buy)derivative10b5-1 | -10,000 | $0.00 | $0 | 215,420 | Jan 2, 2025 |
| Dec 23, 2024 | IRON Disc Medicine, Inc. | MOption exercise Common Stock10b5-1 | +19,820 | $2.65 | $53k | 91,885 | Dec 26, 2024 |
| Dec 23, 2024 | IRON Disc Medicine, Inc. | SOpen-market sale Common Stock10b5-1 | -3,414 | $62.38 | $213k | 88,471 | Dec 26, 2024 |
| Dec 23, 2024 | IRON Disc Medicine, Inc. | SOpen-market sale Common Stock10b5-1 | -12,194 | $63.12 | $770k | 76,277 | Dec 26, 2024 |
| Dec 23, 2024 | IRON Disc Medicine, Inc. | SOpen-market sale Common Stock10b5-1 | -4,212 | $63.80 | $269k | 72,065 | Dec 26, 2024 |
| Dec 23, 2024 | IRON Disc Medicine, Inc. | MOption exercise Stock Option (Right to Buy)derivative10b5-1 | -19,820 | $0.00 | $0 | 41,830 | Dec 26, 2024 |
| Dec 16, 2024 | IRON Disc Medicine, Inc. | MOption exercise Common Stock10b5-1 | +12,791 | $1.01 | $13k | 84,856 | Dec 18, 2024 |
| Dec 16, 2024 | IRON Disc Medicine, Inc. | SOpen-market sale Common Stock10b5-1 | -219 | $64.66 | $14k | 84,637 | Dec 18, 2024 |
| Dec 16, 2024 | IRON Disc Medicine, Inc. | SOpen-market sale Common Stock10b5-1 | -5,767 | $65.58 | $378k | 78,870 | Dec 18, 2024 |
| Dec 16, 2024 | IRON Disc Medicine, Inc. | SOpen-market sale Common Stock10b5-1 | -6,305 | $66.35 | $418k | 72,565 | Dec 18, 2024 |
| Dec 16, 2024 | IRON Disc Medicine, Inc. | SOpen-market sale Common Stock10b5-1 | -500 | $67.20 | $34k | 72,065 | Dec 18, 2024 |
| Dec 16, 2024 | IRON Disc Medicine, Inc. | MOption exercise Stock Option (Right to Buy)derivative10b5-1 | -12,791 | $0.00 | $0 | 225,420 | Dec 18, 2024 |
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.