Gossamer Bio, Inc.
DE ˙ DB ˙ US38341P1021
0,17 € ↑0,02 (10,16%)
2026-06-05
DEL PRIS
SecurityDE:4GB / Gossamer Bio, Inc.
InstitutionBnp Paribas Arbitrage, Sa
Latest Disclosed Ownership95,606 shares
Latest Disclosed Value $ 31,407
Bnp Paribas Arbitrage, Sa reports 6.84% increase in ownership of 4GB / Gossamer Bio, Inc.

On May 12, 2026 - Bnp Paribas Arbitrage, Sa filed a 13F-HR form disclosing ownership of 95,606 shares of Gossamer Bio, Inc. (DE:4GB) valued at $26,273 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 89,489 shares of Gossamer Bio, Inc.. This represents a change in shares of 6.84% during the quarter. The current value of the position is $16,062 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-12 2026-03-31 13F Gossamer Bio Equity 38341P102 95,606 6,117 6.84 31 -88.81 0.0000
2026-02-10 2025-12-31 13F Gossamer Bio Equity 38341P102 89,489 -6,914 -7.17 277 9.49 0.0001
2025-11-13 2025-09-30 13F Gossamer Bio Equity 38341P102 96,403 79,286 463.20 254 1,104.76 0.0001
2025-08-14 2025-06-30 13F Gossamer Bio Equity 38341P102 17,117 16,198 1,762.57 21 2,000.00 0.0000
2025-05-14 2025-03-31 13F Gossamer Bio Equity 38341P102 919 -35 -3.67 1 0.0000
2025-02-14 2024-12-31 13F Gossamer Bio Equity 38341P102 954 0 0.00 1 0.0000
2024-11-13 2024-09-30 13F Gossamer Bio Equity 38341P102 954 0 0.00 1 0.0000
2024-08-13 2024-06-30 13F Gossamer Bio Equity 38341P102 954 0 0.00 1 -100.00 0.0000
2024-05-01 2024-03-31 13F Gossamer Bio Equity 38341P102 954 -81 -7.83 1 0.0000
2024-02-14 2023-12-31 13F/A-2 Gossamer Bio Equity 38341P102 1,035 -3,556 -77.46 1 -100.00 0.0000
2024-02-07 2023-12-31 13F/A-1 Gossamer Bio Equity 38341P102 1,035 -3,556 1 0.0000
2024-02-07 2023-12-31 13F Gossamer Bio Equity 38341P102 1,035 1
2023-11-14 2023-09-30 13F Gossamer Bio Equity 38341P102 4,591 -77,083 -94.38 4 -96.94 0.0000
2023-08-09 2023-06-30 13F Gossamer Bio Equity 38341P102 81,674 10,333 14.48 98 10.11 0.0001
2023-05-12 2023-03-31 13F GOSSAMER BIO EQUITY 38341P102 71,341 -436,503 -85.95 90 -91.92 0.0001
2023-02-14 2022-12-31 13F Gossamer Bio Equity 38341P102 507,844 277,292 120.27 1,102 -60.10 0.0017
2022-11-16 2022-09-30 13F/A-1 Gossamer Bio Equity 38341P102 230,552 213,753 1,272.42 2,762 1,872.86 0.0044
2022-11-15 2022-09-30 13F Gossamer Bio Equity 38341P102 230,552 213,753 2,762 0.0007
2022-08-12 2022-06-30 13F Gossamer Bio Equity 38341P102 16,799 -8,034 -32.35 141 -34.88 0.0002
2022-05-18 2022-03-31 13F/A-1 Gossamer Bio Equity 38341P102 24,833 -6,130 -19.80 216 -38.57 0.0003
2022-02-09 2021-12-31 13F GOSSAMER BIO EQUITY 38341P102 30,963 15,989 106.78 350 86.17 0.0005
2021-11-16 2021-09-30 13F/A-1 GOSSAMER BIO EQUITY 38341P102 14,974 7,378 97.13 188 208.20 0.0003
2021-11-12 2021-09-30 13F GOSSAMER BIO EQUITY 38341P102 13,319 5,723 165 0.0000
2021-08-10 2021-06-30 13F GOSSAMER BIO EQUITY 38341P102 7,596 -12,604 -62.40 62 -67.20 0.0001
2021-05-07 2021-03-31 13F GOSSAMER BIO EQUITY 38341P102 20,200 12,582 165.16 187 154.79 0.0003
2021-02-10 2020-12-31 13F GOSSAMER BIO EQUITY 38341P102 7,618 -5,701 -42.80 74 -55.76 0.0001
2020-10-30 2020-09-30 13F GOSSAMER BIO EQUITY 38341P102 13,319 8,045 152.54 165 142.65 0.0002
2020-08-06 2020-06-30 13F GOSSAMER BIO EQUITY 38341P102 5,274 -16,771 -76.08 69 -69.51 0.0001
2020-05-13 2020-03-31 13F GOSSAMER BIO EQUITY 38341P102 22,045 15,844 255.51 224 132.29 0.0005
2020-02-12 2019-12-31 13F GOSSAMER BIO EQUITY 38341P102 6,201 -758 -10.89 97 -17.24 0.0002
2019-11-07 2019-09-30 13F GOSSAMER BIO EQUITY 38341P102 6,959 5,087 271.74 117 182.93 0.0002
2019-07-30 2019-06-30 13F GOSSAMER BIO EQUITY 38341P102 1,872 1,872 42 0.0001
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.