Gossamer Bio, Inc. (GOSS)
Data as of , from SEC Form 4 filings.
See up to 3 months of GOSS. The 7-day demo opens the 1M and 3M ranges and puts GOSS on your watchlist.
Start 7-day demoLatest GOSS insider trades
About Gossamer Bio, Inc. (GOSS)
Gossamer Bio Inc is a clinical-stage biopharmaceutical company. It focuses on discovering, acquiring, developing, and commercializing therapeutics in the disease areas of immunology, inflammation, and oncology. The company pipeline products include Seralutinib, which address the cellular overgrowth, fibrosis, and vascular remodeling which underlie PAH (pulmonary arterial hypertension).
- SAN DIEGO, CA
- 162
- 2019
- XNAS
GOSS Form 4 activity by transaction type, last 90 days
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Grant or award | 14 | 26,190,421 |
Dollar totals cover purchases and sales only (codes P and S). Grants, option exercises, gifts and tax withholding are counted in shares, because none of them is a trade at a market price.
GOSS insider transactions (Form 4)
131 Form 4 filings on record, the earliest from Aug 20, 2025, newest first. Filing history page 2 of 2.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sandra Milligan - Director | Open-market purchase | Common Stock | 26,050 | $153.60 | $50K |
GOSS insider trading FAQ
What is the latest insider trade for GOSS?
Gossamer Bio, Inc. (GOSS) had 12 insider filings in the last 90 days, with the most recent on 2026-09-25. The full record for GOSS runs to 31 Form 4 filings, the earliest from 2025-08-20. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.
How many insiders are buying GOSS stock?
No insider purchases of GOSS were filed in the last 90 days. 1 purchase is on record for this company.
How many insiders are selling GOSS stock?
No insider sales of GOSS were filed in the last 90 days.
Where can I see GOSS SEC filings (Form 4, 10-K, 10-Q, 8-K)?
This page collects GOSS Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
More Health Care companies with insider activity
Recent insider filings
10The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.
- - Sandra Milligan view on EDGAR
- - Thomas O. Daniel view on EDGAR
- - Gregory Austin Ciongoli view on EDGAR
- - Skye Drynan view on EDGAR
- - John D. Quisel view on EDGAR
- - Russell J. Cox view on EDGAR
- - Steven D. Nathan view on EDGAR
- - Waage Christian view on EDGAR
- - Caryn Peterson view on EDGAR
Related companies with recent insider activity
Learn more
- What the Form 4 transaction codes mean
- Grants, option exercises, gifts and tax withholding are not trades on the market. The codes say which is which.
- Insider activity in Health Care
- Where GOSS's peers are being bought and sold.
- Every recent Form 4
- The market-wide feed, updated as filings arrive from SEC EDGAR.
Follow GOSS with a 7-day demo
- GOSS on your watchlist
- Every GOSS Form 4 filing on record
- Up to 3 months of GOSS price history
- The daily trading plan of ranked insider buys, on a delay, with the plan archive
