Gossamer Bio, Inc.
DE ˙ DB ˙ US38341P1021
0,15 € ↓ -0,02 (-9,23%)
2026-06-04
DEL PRIS
SecurityDE:4GB / Gossamer Bio, Inc.
InstitutionCI Private Wealth, LLC
Latest Disclosed Ownership3,985,383 shares
Latest Disclosed Value $ 1,309,199
CI Private Wealth, LLC reports 3.63% increase in ownership of 4GB / Gossamer Bio, Inc.

On May 15, 2026 - CI Private Wealth, LLC filed a 13F-HR form disclosing ownership of 3,985,383 shares of Gossamer Bio, Inc. (DE:4GB) valued at $1,095,183 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on March 9, 2026 disclosing 3,845,885 shares of Gossamer Bio, Inc.. This represents a change in shares of 3.63% during the quarter. The current value of the position is $607,771 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 3,985,383 139,498 3.63 1,309 -89.02 0.0018
2026-03-09 2025-12-31 13F/A-1 GOSSAMER BIO COM 38341P102 3,845,885 3,825,879 19,123.66 11,922 22,826.92 0.0162
2026-02-19 2025-12-31 13F GOSSAMER BIO COM 38341P102 3,845,885 3,825,879 11,922 0.0158
2025-11-14 2025-09-30 13F GOSSAMER BIO COM 38341P102 20,006 -3,673,677 -99.46 53 -98.86 0.0001
2025-09-26 2025-06-30 13F/A-1 GOSSAMER BIO COM 38341P102 3,693,683 302,200 8.91 4,543 21.80 0.0060
2025-08-15 2025-06-30 13F GOSSAMER BIO COM 38341P102 3,693,683 302,200 4,543 0.0038
2025-05-14 2025-03-31 13F GOSSAMER BIO COM 38341P102 3,391,483 0 0.00 3,731 21.62 0.0061
2025-02-10 2024-12-31 13F GOSSAMER BIO COM 38341P102 3,391,483 0 0.00 3,068 -8.31 0.0051
2024-11-12 2024-09-30 13F GOSSAMER BIO COM 38341P102 3,391,483 0 0.00 3,345 9.49 0.0052
2024-08-13 2024-06-30 13F GOSSAMER BIO COM 38341P102 3,391,483 119,213 3.64 3,055 -20.88 0.0053
2024-05-09 2024-03-31 13F GOSSAMER BIO COM 38341P102 3,272,270 334,339 11.38 3,861 44.07 0.0069
2024-02-09 2023-12-31 13F GOSSAMER BIO COM 38341P102 2,937,931 965,092 48.92 2,681 63.22 0.0049
2023-11-03 2023-09-30 13F GOSSAMER BIO COM 38341P102 1,972,839 602,653 43.98 1,643 -0.12 0.0038
2023-08-10 2023-06-30 13F GOSSAMER BIO COM 38341P102 1,370,186 9,800 0.72 1,644 -4.08 0.0038
2023-05-15 2023-03-31 13F GOSSAMER BIO COM 38341P102 1,360,386 1,191,666 706.30 1,714 368.31 0.0046
2023-02-15 2022-12-31 13F GOSSAMER BIO COM 38341P102 168,720 168,720 366 0.0013
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.