Delcath Systems, Inc.
US ˙ NasdaqCM ˙ US24661P8077

SecurityDCTH / Delcath Systems, Inc.
InstitutionState Street Corp
Latest Disclosed Ownership664,428 shares
Latest Disclosed Value $ 6,165,892
State Street Corp reports 9.28% increase in ownership of DCTH / Delcath Systems, Inc.

On May 15, 2026 - State Street Corp filed a 13F-HR form disclosing ownership of 664,428 shares of Delcath Systems, Inc. (US:DCTH) valued at $6,165,892 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 608,008 shares of Delcath Systems, Inc.. This represents a change in shares of 9.28% during the quarter. The current value of the position is $7,089,447 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 DELCATH SYS COM NEW 24661P807 664,428 56,420 9.28 6,166 0.41 0.0002
2026-02-13 2025-12-31 13F DELCATH SYS COM NEW 24661P807 608,008 -13,242 -2.13 6,141 -8.06 0.0002
2025-11-14 2025-09-30 13F DELCATH SYS COM NEW 24661P807 621,250 147,357 31.09 6,678 3.63 0.0002
2025-08-14 2025-06-30 13F DELCATH SYS COM NEW 24661P807 473,893 360,150 316.63 6,445 345.34 0.0002
2025-05-15 2025-03-31 13F DELCATH SYS COM NEW 24661P807 113,743 16,950 17.51 1,448 24.21 0.0001
2025-02-14 2024-12-31 13F DELCATH SYS COM NEW 24661P807 96,793 11,336 13.27 1,165 51.10 0.0000
2024-11-14 2024-09-30 13F DELCATH SYS COM NEW 24661P807 85,457 9,400 12.36 772 21.23 0.0000
2024-08-14 2024-06-30 13F DELCATH SYS COM NEW 24661P807 76,057 7,300 10.62 637 94.50 0.0000
2024-05-15 2024-03-31 13F DELCATH SYS COM NEW 24661P807 68,757 0 0.00 328 14.34 0.0000
2024-02-14 2023-12-31 13F DELCATH SYS COM NEW 24661P807 68,757 0 0.00 286 2.88 0.0000
2023-11-14 2023-09-30 13F DELCATH SYS COM NEW 24661P807 68,757 42,000 156.97 278 79.35 0.0000
2023-08-14 2023-06-30 13F DELCATH SYS COM NEW 24661P807 26,757 0 0.00 156 1.31 0.0000
2023-05-15 2023-03-31 13F DELCATH SYS COM NEW 24661P807 26,757 0 0.00 154 59.38 0.0000
2023-05-15 2022-12-31 13F/A-99 DELCATH SYS COM NEW 24661P807 26,757 0 0.00 96 11.63 0.0000
2023-05-15 2022-12-31 13F DELCATH SYS COM NEW 24661P807 26,757 0 96 0.0000
2022-11-15 2022-09-30 13F DELCATH SYS COM NEW 24661P807 26,757 0 0.00 86 -19.63 0.0000
2022-08-15 2022-06-30 13F DELCATH SYS COM NEW 24661P807 26,757 0 0.00 107 -37.43 0.0000
2022-05-16 2022-03-31 13F DELCATH SYS COM NEW 24661P807 26,757 1,557 6.18 171 -12.31 0.0000
2022-02-14 2021-12-31 13F DELCATH SYS COM NEW 24661P807 25,200 10,400 70.27 195 25.81 0.0000
2021-11-15 2021-09-30 13F DELCATH SYS COM NEW 24661P807 14,800 14,800 155 0.0000
2014-08-12 2014-06-30 13F DELCATH SYSTEMS Common equity shares 24661P104 0 -82,523 -100.00 0 -100.00
2014-05-15 2014-03-31 13F/A-1 DELCATH SYSTEMS Common equity shares 24661P104 82,523 0 0.00 23 15.00 0.0000
2014-05-13 2014-03-31 13F DELCATH SYSTEMS Common equity shares 24661P401 82,523 23
2014-02-06 2013-12-31 13F/A-1 DELCATH SYSTEMS Common equity shares 24661P104 82,523 0 0.00 20 -25.93 0.0000
2014-02-06 2013-12-31 13F DELCATH SYSTEMS Common equity shares 24661P104 28,523 35
2013-11-12 2013-09-30 13F DELCATH SYSTEMS Common equity shares 24661P104 82,523 0 0.00 27 -12.90 0.0000
2013-08-08 2013-06-30 13F DELCATH SYSTEMS Common equity shares 24661P104 82,523 82,523 31 0.0000
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.