Company · Ownership research

Gossamer Bio, Inc. GOSS

CIK 0001728117 · CUSIP 38341P102

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 38341P102 (GOSS), not CUSIP 38341P902 (GOSS), CUSIP 38341P952 (GOSS), and does not merge CUSIPs.

This page lists the top 20 of 101 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	NEA Management Company, LLC CIK 1512848 · View history	$17.91M 18,093,034 shares	0.98%	0(0.00%)Unchanged	SEC filing ↗ Nov 14, 2024	▾
02	Siren, L.L.C. CIK 2005245 · View history	$13.10M 13,281,610 shares	0.66%	—	SEC filing ↗ Nov 13, 2024	▾
03	VANGUARD GROUP INC CIK 102909 · View history	$11.59M 11,754,397 shares	0.00%	-5.85K(0.00%)Reduced	SEC filing ↗ Nov 13, 2024	▾
04	Octagon Capital Advisors LP CIK 1839435 · View history	$9.06M 9,187,883 shares	1.45%	0(0.00%)Unchanged	SEC filing ↗ Nov 14, 2024	▾
05	ARCH Venture Management, LLC CIK 1274403 · View history	$7.95M 8,055,916 shares	3.05%	0(0.00%)Unchanged	SEC filing ↗ Nov 14, 2024	▾
06	FMR LLC CIK 315066 · View history	$7.83M 7,935,735 shares	0.00%	+5.23K(+0.10%)Added	SEC filing ↗ Nov 13, 2024	▾
07	PRICE T ROWE ASSOCIATES INC /MD/ CIK 80255 · View history	$6.35M 6,434,046 shares	0.00%	+939.25K(+17.10%)Added	SEC filing ↗ Nov 14, 2024	▾
08	Palo Alto Investors LP CIK 1306923 · View history	$6.19M 6,277,093 shares	0.80%	0(0.00%)Unchanged	SEC filing ↗ Nov 14, 2024	▾
09	Samsara BioCapital, LLC CIK 1744967 · View history	$6.05M 6,130,268 shares	1.16%	0(0.00%)Unchanged	SEC filing ↗ Nov 14, 2024	▾
10	683 Capital Management, LLC CIK 1404574 · View history	$5.72M 5,800,000 shares	0.58%	+50.00K(+0.90%)Added	SEC filing ↗ Nov 14, 2024	▾
11	Alyeska Investment Group, L.P. CIK 1453072 · View history	$5.69M 5,767,456 shares	0.03%	+279.94K(+5.10%)Added	SEC filing ↗ Nov 14, 2024	▾
12	SILVERARC CAPITAL MANAGEMENT, LLC CIK 1816307 · View history	$5.57M 5,645,352 shares	1.25%	+145.35K(+2.60%)Added	SEC filing ↗ Nov 14, 2024	▾
13	Eversept Partners, LP CIK 1697013 · View history	$4.91M 4,978,458 shares	0.38%	-505.69K(-9.20%)Reduced	SEC filing ↗ Nov 14, 2024	▾
14	HHLR ADVISORS, LTD. CIK 1762304 · View history	$4.91M 4,974,041 shares	0.11%	0(0.00%)Unchanged	SEC filing ↗ Nov 14, 2024	▾
15	ACADIAN ASSET MANAGEMENT LLC CIK 916542 · View history	$3.89M 3,948,249 shares	0.01%	+355.48K(+9.90%)Added	SEC filing ↗ Nov 12, 2024	▾
16	Monaco Asset Management SAM CIK 1803593 · View history	$3.80M 3,850,920 shares	1.59%	+1.12M(+41.30%)Added	SEC filing ↗ Nov 7, 2024	▾
17	Opaleye Management Inc. CIK 1595855 · View history	$3.71M 3,665,010 shares	0.62%	-244.99K(-6.30%)Reduced	SEC filing ↗ Nov 14, 2024	▾
18	PLATINUM INVESTMENT MANAGEMENT LTD CIK 1256071 · View history	$3.48M 3,524,908 shares	0.16%	0(0.00%)Unchanged	SEC filing ↗ Nov 8, 2024	▾
19	MARSHALL WACE, LLP CIK 1318757 · View history	$3.45M 3,484,932 shares	0.00%	+149.42K(+4.50%)Added	SEC filing ↗ Nov 14, 2024	▾
20	Corient Private Wealth LLC CIK 1948780 · View history	$3.35M 3,391,483 shares	0.01%	0(0.00%)Unchanged	SEC filing ↗ Nov 12, 2024	▾

Showing 20 / 101 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

101

Cancelled or null records excluded

Disclosed shares

174,875,066

Not deduplicated across managers

Disclosed value

$172.64M

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

Gossamer Bio, Inc. · Q3 2024

Explore all 101 reporting institutions.

This page includes 20 of 101 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.

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Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.