GOSS — 5 insiders, all buying

Form 4 lag: insiders have 2 business days to file after a trade (weekends and holidays extend this), and this site re-ingests once daily — a transaction can appear here roughly three business days after it happened.
13F lag: quarterly 13F-HR holdings cover the prior quarter-end and are due 45 days after it — every institutional position shown here is at least 45 days old by construction, often more.
CUSIP→ticker gaps: 13F positions are reported by CUSIP; some holdings cannot be matched to a current ticker (delistings, corporate actions, thin metadata) and appear without one or are omitted from ticker-level views.
EDGAR timing variability: institutions file at different hours and days within their windows; amended filings (4/A, 13F-HR/A) can restate earlier periods, so historical aggregates may change between batches.

Gossamer Bio, Inc. · Materials · ISO week 2026-W35 (2026-08-24 → 2026-08-24)

ELEVATED + all buys routine-only window · clu-27b48b0ce6e7 · detected 2026-08-28

5Distinct insiders

7Transactions

+$191kTotal reported value

5Source filings

Members

Insider	Role	Txns	Reported value
Hasnain Faheem	President & CEO	2	$166k
Giraudo Bryan	COO/CFO	2	$25k
Christian Waage	EVP, Tech Ops and Admin	1	$0
Peterson Caryn	Chief Development Officer	1	$0
Smith Robert Paul JR	Chief Commercial Officer	1	$0

+ Hasnain Faheem President & CEO A routine 166 sh @ $1000.00 = $166k (derivative) 0001352620-26-000006
+ Hasnain Faheem President & CEO A routine 5,800,051 sh (derivative) 0001352620-26-000006
+ Giraudo Bryan COO/CFO A routine 25 sh @ $1000.00 = $25k (derivative) 0001740847-26-000006
+ Giraudo Bryan COO/CFO A routine 5,800,051 sh (derivative) 0001740847-26-000006
+ Christian Waage EVP, Tech Ops and Admin A routine 2,900,026 sh (derivative) 0001553179-26-000005
+ Peterson Caryn Chief Development Officer A routine 5,800,051 sh (derivative) 0001857256-26-000006
+ Smith Robert Paul JR Chief Commercial Officer A routine 5,800,051 sh (derivative) 0002003059-26-000008