Gossamer Bio, Inc.
DE ˙ DB ˙ US38341P1021
0,15 € ↓ -0,02 (-9,23%)
2026-06-04
DEL PRIS
SecurityDE:4GB / Gossamer Bio, Inc.
InstitutionJacobs Levy Equity Management, Inc
Latest Disclosed Ownership1,695,159 shares
Latest Disclosed Value $ 556,860
Jacobs Levy Equity Management, Inc reports 22.17% decrease in ownership of 4GB / Gossamer Bio, Inc.

On May 15, 2026 - Jacobs Levy Equity Management, Inc filed a 13F-HR form disclosing ownership of 1,695,159 shares of Gossamer Bio, Inc. (DE:4GB) valued at $465,830 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 2,178,033 shares of Gossamer Bio, Inc.. This represents a change in shares of -22.17% during the quarter. The current value of the position is $258,512 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 1,695,159 -482,874 -22.17 557 -91.76 0.0023
2026-02-13 2025-12-31 13F GOSSAMER BIO COM 38341P102 2,178,033 769,915 54.68 6,752 82.31 0.0261
2025-11-17 2025-09-30 13F GOSSAMER BIO COM 38341P102 1,408,118 316,554 29.00 3,703 175.93 0.0147
2025-08-14 2025-06-30 13F GOSSAMER BIO COM 38341P102 1,091,564 809,300 286.72 1,343 332.90 0.0053
2025-05-15 2025-03-31 13F GOSSAMER BIO COM 38341P102 282,264 -1,252,404 -81.61 310 -77.67 0.0012
2025-02-14 2024-12-31 13F GOSSAMER BIO COM 38341P102 1,534,668 -352,844 -18.69 1,388 -25.42 0.0049
2024-11-14 2024-09-30 13F GOSSAMER BIO COM 38341P102 1,887,512 442,895 30.66 1,862 43.04 0.0072
2024-08-14 2024-06-30 13F GOSSAMER BIO COM 38341P102 1,444,617 -189,467 -11.59 1,301 -32.52 0.0054
2024-05-15 2024-03-31 13F GOSSAMER BIO COM 38341P102 1,634,084 -468,964 -22.30 1,928 0.47 0.0086
2024-02-14 2023-12-31 13F GOSSAMER BIO COM 38341P102 2,103,048 2,103,048 1,919 0.0097
2022-08-15 2022-06-30 13F GOSSAMER BIO COM 38341P102 0 -612,496 -100.00 0 -100.00
2022-05-16 2022-03-31 13F GOSSAMER BIO COM 38341P102 612,496 -295,936 -32.58 5,316 -48.26 0.0358
2022-02-14 2021-12-31 13F GOSSAMER BIO COM 38341P102 908,432 -68,931 -7.05 10,274 -16.37 0.0688
2021-11-15 2021-09-30 13F GOSSAMER BIO COM 38341P102 977,363 -29,116 -2.89 12,285 50.31 0.0827
2021-08-16 2021-06-30 13F GOSSAMER BIO COM 38341P102 1,006,479 -54,075 -5.10 8,173 -16.69 0.0554
2021-05-17 2021-03-31 13F GOSSAMER BIO COM 38341P102 1,060,554 429,272 68.00 9,810 60.71 0.0757
2021-02-16 2020-12-31 13F GOSSAMER BIO COM 38341P102 631,282 -15,131 -2.34 6,104 -23.91 0.0535
2020-11-16 2020-09-30 13F GOSSAMER BIO COM 38341P102 646,413 383,635 145.99 8,022 134.84 0.0831
2020-08-17 2020-06-30 13F GOSSAMER BIO COM 38341P102 262,778 170,045 183.37 3,416 263.02 0.0370
2020-05-15 2020-03-31 13F GOSSAMER BIO COM 38341P102 92,733 11,468 14.11 941 -25.91 0.0121
2020-02-14 2019-12-31 13F GOSSAMER BIO COM 38341P102 81,265 81,265 1,270 0.0125
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.