Gossamer Bio, Inc.
DE ˙ DB ˙ US38341P1021
0,17 € ↑0,02 (10,16%)
2026-06-05
DEL PRIS
SecurityDE:4GB / Gossamer Bio, Inc.
InstitutionGeode Capital Management, Llc
Latest Disclosed Ownership4,939,691 shares
Latest Disclosed Value $ 1,623,125
Geode Capital Management, Llc reports 1.37% increase in ownership of 4GB / Gossamer Bio, Inc.

On May 15, 2026 - Geode Capital Management, Llc filed a 13F-HR form disclosing ownership of 4,939,691 shares of Gossamer Bio, Inc. (DE:4GB) valued at $1,357,427 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 4,872,714 shares of Gossamer Bio, Inc.. This represents a change in shares of 1.37% during the quarter. The current value of the position is $829,868 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F GOSSAMER BIO COM 38341P102 4,939,691 66,977 1.37 1,623 -89.26 0.0001
2026-02-09 2025-12-31 13F GOSSAMER BIO COM 38341P102 4,872,714 183,183 3.91 15,109 22.49 0.0009
2025-11-12 2025-09-30 13F GOSSAMER BIO COM 38341P102 4,689,531 134,451 2.95 12,336 120.15 0.0008
2025-08-08 2025-06-30 13F GOSSAMER BIO COM 38341P102 4,555,080 2,282,632 100.45 5,604 124.12 0.0004
2025-05-13 2025-03-31 13F GOSSAMER BIO COM 38341P102 2,272,448 21,987 0.98 2,501 22.79 0.0002
2025-02-12 2024-12-31 13F GOSSAMER BIO COM 38341P102 2,250,461 38,084 1.72 2,037 -6.73 0.0002
2024-11-12 2024-09-30 13F GOSSAMER BIO COM 38341P102 2,212,377 -71,241 -3.12 2,183 6.13 0.0002
2024-08-09 2024-06-30 13F GOSSAMER BIO COM 38341P102 2,283,618 0 0.00 2,058 -23.67 0.0002
2024-05-13 2024-03-31 13F GOSSAMER BIO COM 38341P102 2,283,618 10,693 0.47 2,695 29.94 0.0002
2024-02-13 2023-12-31 13F GOSSAMER BIO COM 38341P102 2,272,925 107,346 4.96 2,074 15.03 0.0002
2023-11-13 2023-09-30 13F GOSSAMER BIO COM 38341P102 2,165,579 1,396,420 181.55 1,804 95.55 0.0002
2023-08-11 2023-06-30 13F GOSSAMER BIO COM 38341P102 769,159 -577,100 -42.87 923 -45.64 0.0001
2023-05-15 2023-03-31 13F GOSSAMER BIO COM 38341P102 1,346,259 51,145 3.95 1,696 84,700.00 0.0002
2023-02-13 2022-12-31 13F GOSSAMER BIO COM 38341P102 1,295,114 36,345 2.89 3 -99.99 0.0004
2022-11-14 2022-09-30 13F GOSSAMER BIO COM 38341P102 1,258,769 232,714 22.68 15,080 75.59 0.0023
2022-08-12 2022-06-30 13F GOSSAMER BIO COM 38341P102 1,026,055 -3,772 -0.37 8,588 -3.92 0.0013
2022-05-13 2022-03-31 13F GOSSAMER BIO COM 38341P102 1,029,827 16,744 1.65 8,938 -21.99 0.0011
2022-02-11 2021-12-31 13F GOSSAMER BIO COM 38341P102 1,013,083 17,322 1.74 11,457 -8.46 0.0014
2021-11-12 2021-09-30 13F GOSSAMER BIO COM 38341P102 995,761 73,467 7.97 12,516 67.13 0.0017
2021-08-13 2021-06-30 13F GOSSAMER BIO COM 38341P102 922,294 76,700 9.07 7,489 -4.24 0.0010
2021-05-12 2021-03-31 13F GOSSAMER BIO COM 38341P102 845,594 68,597 8.83 7,821 4.10 0.0012
2021-02-12 2020-12-31 13F GOSSAMER BIO COM 38341P102 776,997 -11,710 -1.48 7,513 -23.23 0.0013
2020-11-13 2020-09-30 13F GOSSAMER BIO COM 38341P102 788,707 37,129 4.94 9,787 0.17 0.0019
2020-08-13 2020-06-30 13F GOSSAMER BIO COM 38341P102 751,578 159,982 27.04 9,770 62.72 0.0021
2020-05-14 2020-03-31 13F GOSSAMER BIO COM 38341P102 591,596 64,191 12.17 6,004 -27.16 0.0016
2020-02-20 2019-12-31 13F/A-1 GOSSAMER BIO COM 38341P102 527,405 27,310 5.46 8,243 -1.82 0.0017
2020-02-13 2019-12-31 13F GOSSAMER BIO COM 38341P102 527,405 27,310 8,243 1,050.4981
2019-11-12 2019-09-30 13F GOSSAMER BIO COM 38341P102 500,095 257,106 105.81 8,396 55.80 0.0020
2019-08-14 2019-06-30 13F GOSSAMER BIO COM 38341P102 242,989 34,992 16.82 5,389 19.57 0.0013
2019-05-14 2019-03-31 13F GOSSAMER BIO COM 38341P102 207,997 207,997 4,507 0.0012
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.