Reporting owner · CIK 0001586788
Quisel John D
SEC Form 4 history across 2 companies, 9 transactions and 4 filings.
DIRGossamer Bio, Inc.
Open-market transaction mix0% buys0 buys · 3 sales
Available history · Jun 04, 2026 – Sep 23, 2026
Latest insider transactions
Form 4 filings from available history.| Company | Insider | Activity | Disclosed value | Filed (ET) |
|---|---|---|---|---|
GOSSGossamer Bio, Inc. | Quisel John DDIR | A · grantDerivative securitySEC filing ↗ | $0View disclosure → | |
IRONDisc Medicine, Inc. | Quisel John DCEO | M · exerciseDerivative securitySEC filing ↗ | $0View disclosure → | |
IRONDisc Medicine, Inc. | Quisel John DCEO | M · exerciseSEC filing ↗ | $36.3kView disclosure → | |
IRONDisc Medicine, Inc. | Quisel John DCEO | M · exercise10b5-1 detectedDerivative securitySEC filing ↗ | $0View disclosure → | |
IRONDisc Medicine, Inc. | Quisel John DCEO | S · sale10b5-1 detectedSEC filing ↗ | -$949kView disclosure → | |
IRONDisc Medicine, Inc. | Quisel John DCEO | S · sale10b5-1 detectedSEC filing ↗ | -$1.00MView disclosure → | |
IRONDisc Medicine, Inc. | Quisel John DCEO | S · sale10b5-1 detectedSEC filing ↗ | -$656kView disclosure → | |
IRONDisc Medicine, Inc. | Quisel John DCEO | M · exercise10b5-1 detectedSEC filing ↗ | $445kView disclosure → | |
GOSSGossamer Bio, Inc. | Quisel John DDIR | A · grantDerivative securitySEC filing ↗ | $0View disclosure → |
Latest Form 4 facts
Quick context from source filings
Latest open-market transaction
sale at Disc Medicine, Inc. on Aug 17, 2026 valued at $949,162.
Review SEC filingLatest buy
No open-market insider purchase is available.
Monthly open-market activity
Last 3 reported months · purchases and sales
View exact monthly values
| Month | Purchases | Sales | Buy value | Sale value | Net value |
|---|---|---|---|---|---|
| Jun 2026 | 0 | 0 | $0.00 | $0.00 | $0.00 |
| Aug 2026 | 0 | 3 | $0.00 | $2,611,982.32 | -$2,611,982.32 |
| Sep 2026 | 0 | 0 | $0.00 | $0.00 | $0.00 |
Net value is disclosed purchases minus sales, not profit. A dash means the value is unavailable.
Ownership and transaction size
Ownership and ticket size
Average P/S size$870.7K
Median P/S size$949.2K
Direct9
Indirect0
Sep 23, 2026grant
Filing-only signals
Deterministic matches in this insider's history
Associated companies
Companies in the disclosed reporting history
Open-market buy performance
90-day forward return on this insider's open-market purchases
No open-market purchases in available history
A 90-day purchase return requires an open-market buy. No eligible purchases are recorded in this history.
Disclosed ownership
How reported shareholdings evolved
Non-derivative shares held after reported transactions—not stock prices or a complete portfolio.
5 observations · Aug 17, 2026 – Sep 15, 2026. Window ends at the latest available report, not today.
Selected observation · Sep 15, 2026262,064 shares reported
Inspect transaction View exact observations and source transactions
| Transaction date | Shares held after | Filed | Source |
|---|---|---|---|
| Aug 17, 2026 | 259,064 | Aug 18, 2026 | View transaction |
| Aug 17, 2026 | 250,664 | Aug 18, 2026 | View transaction |
| Aug 17, 2026 | 237,952 | Aug 18, 2026 | View transaction |
| Aug 17, 2026 | 226,064 | Aug 18, 2026 | View transaction |
| Sep 15, 2026 | 262,064 | Sep 16, 2026 | View transaction |
Securities and direct/indirect ownership contexts are kept separate and never summed. Joint filings may associate the same disclosed row with multiple owners. Unknown values are omitted, not treated as zero. Lines connect observations for readability; they do not establish holdings between filings, cost basis, or current ownership. Amendments and stock splits require reviewing the source.
Quisel John D Insider Activity FAQ
SEC Form 4 context
Who is Quisel John D?
Quisel John D is a reporting owner in SEC Form 4 filings with reporting owner CIK 0001586788.
Which companies has Quisel John D reported transactions for?
Gossamer Bio, Inc., Disc Medicine, Inc.
When was Quisel John D's latest insider buy?
No open-market insider purchase is available for this period.
When was Quisel John D's latest insider sale?
sale at Disc Medicine, Inc. on Aug 17, 2026 valued at $949,162.
Where can I see the original SEC filings?
Each transaction row links directly to the source SEC filing so the reported Form 4 details can be reviewed.
Are performance metrics included?
The profile shows average and median 90-day stock returns after open-market purchases when price coverage is available. These are unadjusted stock returns, not realized trading gains. Win rates, benchmark-adjusted returns and conviction scores are not calculated.