Gossamer Bio, Inc.
DE ˙ DB ˙ US38341P1021
0,15 € ↓ -0,02 (-9,23%)
2026-06-04
DEL PRIS
SecurityDE:4GB / Gossamer Bio, Inc.
InstitutionNorthern Trust Corp
Latest Disclosed Ownership1,408,960 shares
Latest Disclosed Value $ 462,843
Northern Trust Corp reports 0.54% decrease in ownership of 4GB / Gossamer Bio, Inc.

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 1,408,960 shares of Gossamer Bio, Inc. (DE:4GB) valued at $387,182 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 1,416,540 shares of Gossamer Bio, Inc.. This represents a change in shares of -0.54% during the quarter. The current value of the position is $214,866 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)
2026-05-14 2026-03-31 13F GOSSAMER BIO COM 38341P102 1,408,960 -7,580 -0.54 463 -89.48 0.0000
2026-02-17 2025-12-31 13F GOSSAMER BIO COM 38341P102 1,416,540 -78,863 -5.27 4,391 11.67 0.0006
2025-11-14 2025-09-30 13F GOSSAMER BIO COM 38341P102 1,495,403 -24,723 -1.63 3,933 110.38 0.0005
2025-08-13 2025-06-30 13F GOSSAMER BIO COM 38341P102 1,520,126 1,110,010 270.66 1,870 314.41 0.0003
2025-05-13 2025-03-31 13F GOSSAMER BIO COM 38341P102 410,116 -1,210 -0.29 451 21.24 0.0001
2025-02-14 2024-12-31 13F GOSSAMER BIO COM 38341P102 411,326 626 0.15 372 -8.15 0.0001
2024-11-13 2024-09-30 13F GOSSAMER BIO COM 38341P102 410,700 -30,315 -6.87 405 2.02 0.0001
2024-08-14 2024-06-30 13F GOSSAMER BIO COM 38341P102 441,015 54,457 14.09 397 -12.94 0.0001
2024-05-14 2024-03-31 13F GOSSAMER BIO COM 38341P102 386,558 -56,228 -12.70 456 12.87 0.0001
2024-02-13 2023-12-31 13F GOSSAMER BIO COM 38341P102 442,786 6,026 1.38 404 11.29 0.0001
2023-11-13 2023-09-30 13F GOSSAMER BIO COM 38341P102 436,760 240,395 122.42 364 54.47 0.0001
2023-08-11 2023-06-30 13F GOSSAMER BIO COM 38341P102 196,365 -412,469 -67.75 236 -69.36 0.0000
2023-05-15 2023-03-31 13F GOSSAMER BIO COM 38341P102 608,834 -50,853 -7.71 767 -46.40 0.0002
2023-02-13 2022-12-31 13F GOSSAMER BIO COM 38341P102 659,687 -14,284 -2.12 1,432 -82.28 0.0003
2022-11-14 2022-09-30 13F GOSSAMER BIO COM 38341P102 673,971 46,896 7.48 8,074 53.85 0.0018
2022-08-12 2022-06-30 13F GOSSAMER BIO COM 38341P102 627,075 34,900 5.89 5,248 2.08 0.0011
2022-05-13 2022-03-31 13F GOSSAMER BIO COM 38341P102 592,175 -5,914 -0.99 5,141 -23.99 0.0009
2022-02-08 2021-12-31 13F GOSSAMER BIO COM 38341P102 598,089 -2,348 -0.39 6,764 -10.39 0.0011
2021-11-15 2021-09-30 13F GOSSAMER BIO COM 38341P102 600,437 -7,769 -1.28 7,548 52.82 0.0013
2021-08-13 2021-06-30 13F GOSSAMER BIO COM 38341P102 608,206 5,066 0.84 4,939 -11.47 0.0009
2021-05-12 2021-03-31 13F GOSSAMER BIO COM 38341P102 603,140 -51,796 -7.91 5,579 -11.92 0.0010
2021-02-11 2020-12-31 13F GOSSAMER BIO COM 38341P102 654,936 -22,613 -3.34 6,334 -24.68 0.0012
2020-11-16 2020-09-30 13F GOSSAMER BIO COM 38341P102 677,549 33,600 5.22 8,409 0.45 0.0018
2020-08-14 2020-06-30 13F GOSSAMER BIO COM 38341P102 643,949 124,731 24.02 8,371 58.84 0.0020
2020-05-14 2020-03-31 13F GOSSAMER BIO COM 38341P102 519,218 -472 -0.09 5,270 -35.11 0.0015
2020-02-14 2019-12-31 13F GOSSAMER BIO COM 38341P102 519,690 11,086 2.18 8,122 -4.88 0.0018
2019-11-13 2019-09-30 13F GOSSAMER BIO COM 38341P102 508,604 328,788 182.85 8,539 114.06 0.0020
2019-08-13 2019-06-30 13F GOSSAMER BIO COM 38341P102 179,816 16,340 10.00 3,989 12.59 0.0009
2019-05-13 2019-03-31 13F GOSSAMER BIO COM 38341P102 163,476 163,476 3,543 0.0009
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.