Gossamer Bio, Inc.
DE ˙ DB ˙ US38341P1021
0,17 € ↑0,02 (10,16%)
2026-06-05
DEL PRIS
SecurityDE:4GB / Gossamer Bio, Inc.
InstitutionGoldman Sachs Group Inc
Latest Disclosed Ownership1,180,544 shares
Latest Disclosed Value $ 387,809
Goldman Sachs Group Inc reports 34.13% decrease in ownership of 4GB / Gossamer Bio, Inc.

On May 15, 2026 - Goldman Sachs Group Inc filed a 13F-HR form disclosing ownership of 1,180,544 shares of Gossamer Bio, Inc. (DE:4GB) valued at $324,413 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 1,792,114 shares of Gossamer Bio, Inc.. This represents a change in shares of -34.13% during the quarter. The current value of the position is $198,331 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 CMN 38341P102 1,180,544 -611,570 -34.13 388 -93.03 0.0000
2026-02-10 2025-12-31 13F GOSSAMER BIO CMN 38341P102 1,792,114 1,492,532 498.20 5,556 605.84 0.0007
2025-11-14 2025-09-30 13F GOSSAMER BIO CMN 38341P102 299,582 138,887 86.43 788 299.49 0.0001
2025-08-14 2025-06-30 13F GOSSAMER BIO CMN 38341P102 160,695 -778,908 -82.90 198 -80.93 0.0000
2025-06-27 2025-03-31 13F/A-2 GOSSAMER BIO CMN 38341P102 939,603 825,047 720.21 1,034 902.91 0.0002
2025-05-16 2025-03-31 13F/A-1 GOSSAMER BIO CMN 38341P102 939,603 825,047 1,034 0.0002
2025-05-09 2025-03-31 13F GOSSAMER BIO CMN 38341P102 939,603 825,047 1,034 0.0002
2025-02-11 2024-12-31 13F GOSSAMER BIO CMN 38341P102 114,556 -616,198 -84.32 104 -85.69 0.0000
2024-11-14 2024-09-30 13F GOSSAMER BIO CMN 38341P102 730,754 -1,386,960 -65.49 721 -62.24 0.0001
2024-08-13 2024-06-30 13F GOSSAMER BIO CMN 38341P102 2,117,714 -576,251 -21.39 1,908 -39.99 0.0003
2024-05-15 2024-03-31 13F GOSSAMER BIO CMN 38341P102 2,693,965 -32,286 -1.18 3,179 27.78 0.0006
2024-05-14 2023-12-31 13F/A-2 GOSSAMER BIO CMN 38341P102 2,726,251 1,061,749 63.79 2,488 79.44 0.0005
2024-03-01 2023-12-31 13F/A-1 GOSSAMER BIO CMN 38341P102 2,726,251 1,061,749 2,488 0.0004
2024-02-13 2023-12-31 13F GOSSAMER BIO CMN 38341P102 2,726,251 1,061,749 2,488 0.0001
2024-05-15 2023-09-30 13F/A-1 GOSSAMER BIO CMN 38341P102 1,664,502 1,260,635 312.14 1,386 186.36 0.0003
2023-11-14 2023-09-30 13F GOSSAMER BIO CMN 38341P102 1,664,502 1,260,635 1,386 0.0003
2024-05-14 2023-06-30 13F/A-1 GOSSAMER BIO CMN 38341P102 403,867 -927,955 -69.68 485 -71.16 0.0001
2023-08-15 2023-06-30 13F GOSSAMER BIO CMN 38341P102 403,867 -927,955 485 0.0001
2024-05-14 2023-03-31 13F/A-1 GOSSAMER BIO CMN 38341P102 1,331,822 -436,995 -24.71 1,678 -56.28 0.0004
2023-05-11 2023-03-31 13F GOSSAMER BIO CMN 38341P102 1,331,822 -436,995 1,678 0.0004
2024-05-14 2022-12-31 13F/A-1 GOSSAMER BIO CMN 38341P102 1,768,817 717,305 68.22 3,838 31,883.33 0.0009
2023-02-13 2022-12-31 13F GOSSAMER BIO CMN 38341P102 1,768,817 717,305 3,838 0.0009
2024-05-14 2022-09-30 13F/A-1 GOSSAMER BIO CMN 38341P102 1,051,512 410,923 64.15 13 140.00 0.0032
2022-11-14 2022-09-30 13F GOSSAMER BIO CMN 38341P102 1,051,512 410,923 12,597 0.0029
2024-05-14 2022-06-30 13F/A-2 GOSSAMER BIO CMN 38341P102 640,589 184,697 40.51 5 -99.87 0.0013
2022-08-18 2022-06-30 13F/A-1 GOSSAMER BIO CMN 38341P102 640,589 184,697 5,361 0.0012
2022-08-15 2022-06-30 13F GOSSAMER BIO CMN 38341P102 640,589 184,697 5,361 0.0012
2022-05-16 2022-03-31 13F GOSSAMER BIO CMN 38341P102 455,892 211,804 86.77 3,958 43.35 0.0008
2022-02-17 2021-12-31 13F/A-1 GOSSAMER BIO CMN 38341P102 244,088 -327,829 -57.32 2,761 -61.59 0.0005
2022-02-14 2021-12-31 13F GOSSAMER BIO CMN 38341P102 244,088 -327,829 2,761 0.0002
2022-01-20 2021-09-30 13F/A-1 GOSSAMER BIO CMN 38341P102 571,917 60,342 11.80 7,189 73.06 0.0015
2021-11-10 2021-09-30 13F GOSSAMER BIO CMN 38341P102 571,917 60,342 7,189 0.0004
2021-08-13 2021-06-30 13F GOSSAMER BIO CMN 38341P102 511,575 -465,522 -47.64 4,154 -54.04 0.0009
2021-05-17 2021-03-31 13F GOSSAMER BIO CMN 38341P102 977,097 124,743 14.64 9,038 9.64 0.0023
2021-02-12 2020-12-31 13F GOSSAMER BIO CMN 38341P102 852,354 41,190 5.08 8,243 -18.11 0.0021
2020-11-13 2020-09-30 13F GOSSAMER BIO CMN 38341P102 811,164 637,832 367.98 10,066 346.78 0.0029
2020-08-12 2020-06-30 13F GOSSAMER BIO CMN 38341P102 173,332 99,005 133.20 2,253 198.81 0.0007
2020-05-15 2020-03-31 13F GOSSAMER BIO CMN 38341P102 74,327 -24,234 -24.59 754 -51.04 0.0003
2020-02-14 2019-12-31 13F GOSSAMER BIO CMN 38341P102 98,561 98,561 1,540 0.0004
2019-08-14 2019-06-30 13F GOSSAMER BIO CMN 38341P102 0 -99,531 -100.00 0 -100.00
2019-05-15 2019-03-31 13F GOSSAMER BIO CMN 38341P102 99,531 99,531 2,157 0.0007
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.