Comparable stake leader
Rosalind Advisors, Inc.
SEC ownership of DELCATH SYSTEMS, INC.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0000872912.
Disclosed value leader
Rosalind Advisors, Inc.
Comparable rows
50/50
Latest evidence
31 Mar 2026
- Public ticker
- DCTH on Nasdaq
- Parsed ownership sources
-
13D/G, 3/4/5, and 13F
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
Rosalind Advisors, Inc.
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
Rosalind Advisors, Inc.
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
31 Mar 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0000872912
- Issuer location
- Queensbury, NY
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of DELCATH SYSTEMS, INC. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Rosalind Advisors, Inc.
Disclosed value leader
Rosalind Advisors, Inc.
Comparable rows
50/50
Latest evidence
31 Mar 2026
13D/G
3/4/5
13F
Lead comparable stake: 9.9%
13D/G row: Rosalind Advisors, Inc.
Showing 1-8 of 50 holder rows.
Quick read
Rosalind Advisors, Inc. leads the comparable SEC ownership view at 9.9%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Rosalind Advisors, Inc.'s linked filing trail.
Comparable ownership
Top 5
Rosalind Advisors, Inc.
9.9%
BlackRock, Inc.
5%
Vivo Opportunity Fund Holdings, L.P.
2.2%
VANGUARD CAPITAL MANAGEMENT LLC
2%
Propel Bio Management, LLC
1.4%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Rosalind Advisors, Inc. |
13D/G
3/4/5
13F
Director · Company
|
9.9%
|
$70,022,327
6,719,993 shares
|
+$468,900 | 31 Dec 2025 |
| BlackRock, Inc. |
13D/G
13F
Company
|
5%
|
$18,845,008
1,753,024 shares
|
$0 | 30 Sep 2025 |
| Vivo Opportunity Fund Holdings, L.P. |
13D/G
|
2.2%
|
$9,002,340
750,195 shares
|
$0 | 31 Mar 2025 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13F
Company
|
2%
|
$12,335,793
1,329,288 shares
|
— | 31 Mar 2026 |
| Propel Bio Management, LLC |
13F
Company
|
1.4%
|
$9,159,490
979,698 shares
|
— | 31 Mar 2026 |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
Company
|
1%
|
$6,423,891
692,031 shares
|
— | 31 Mar 2026 |
| STATE STREET CORP |
13F
Company
|
0.98%
|
$6,165,892
664,428 shares
|
— | 31 Mar 2026 |
| Private Wealth Advisors, LLC |
13F
Company
|
0.87%
|
$5,489,343
591,524 shares
|
— | 31 Mar 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to buying over the last 12 months. Net value: +$287,368.
Buys
$287,368
Insiders: 3
Sells
$0
Insiders: 0
Net
+$287,368
Shares: +32,619
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 32,619
Shares: 0
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 16,733 | 0 | $150,328 | $0 | +$150,328 |
| 6-9 | 15,886 | 0 | $137,041 | $0 | +$137,041 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-17 of 17 reporting-owner rows connected to DELCATH SYSTEMS, INC.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
17
Largest Forms 3/4/5 holder
Gil Aharon
Net 12M change
+$287,368
Latest report
13 May 2026
Recent insider transactions for DELCATH SYSTEMS, INC.
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| John Richard Sylvester | DCTH | Stock Option (right to buy) | Award | 22,500 | 22,500 | 13 May 2026 | Direct | |||
| Bridget A. Martell | DCTH | Stock Option (right to buy) | Award | 22,500 | 22,500 | 13 May 2026 | Direct | |||
| Elizabeth Czerepak | DCTH | Stock Option (right to buy) | Award | 22,500 | 22,500 | 13 May 2026 | Direct | |||
| Steven A. J. Salamon | DCTH | Stock Option (right to buy) | Award | 22,500 | 22,500 | 13 May 2026 | Direct | |||
| Gil Aharon | DCTH | Stock Option (right to buy) | Award | 22,500 | 22,500 | 13 May 2026 | Direct | |||
| Sandra Pennell | DCTH | Common Stock | Purchase | 7.74% | $50,018 | $9.04 | 5,533 | 77,018 | 06 Mar 2026 | Direct |
| Gerard J. Michel | DCTH | Common Stock | Purchase | 3.39% | $100,309 | $8.96 | 11,200 | 342,034 | 02 Mar 2026 | Direct |
| David L. Hoffman | DCTH | Restricted Stock Units | Award | 28,250 | 28,250 | 17 Feb 2026 | Direct | |||
| David L. Hoffman | DCTH | Stock Option (Right to Buy) | Award | 56,500 | 56,500 | 17 Feb 2026 | Direct | |||
| Kevin Muir | DCTH | Restricted Stock Units | Award | 28,250 | 28,250 | 17 Feb 2026 | Direct | |||
| Kevin Muir | DCTH | Stock Option (Right to Buy) | Award | 56,500 | 56,500 | 17 Feb 2026 | Direct | |||
| Sandra Pennell | DCTH | Restricted Stock Units | Award | 28,250 | 28,250 | 17 Feb 2026 | Direct | |||
| Sandra Pennell | DCTH | Stock Option (Right to Buy) | Award | 56,500 | 56,500 | 17 Feb 2026 | Direct | |||
| Vojo Vukovic | DCTH | Restricted Stock Units | Award | 28,250 | 28,250 | 17 Feb 2026 | Direct | |||
| Vojo Vukovic | DCTH | Stock Option (Right to Buy) | Award | 56,500 | 56,500 | 17 Feb 2026 | Direct | |||
| Martha S. Rook | DCTH | Restricted Stock Units | Award | 28,250 | 28,250 | 17 Feb 2026 | Direct | |||
| Martha S. Rook | DCTH | Stock Option (Right to Buy) | Award | 56,500 | 56,500 | 17 Feb 2026 | Direct | |||
| Gerard J. Michel | DCTH | Restricted Stock Units | Award | 97,500 | 97,500 | 17 Feb 2026 | Direct | |||
| Gerard J. Michel | DCTH | Stock Option (Right to Buy) | Award | 195,000 | 195,000 | 17 Feb 2026 | Direct | |||
| John Richard Sylvester | DCTH | Common Stock | Purchase | 41.6% | $38,992 | $8.89 | 4,386 | 14,936 | 21 Nov 2025 | Direct |
| Gerard J. Michel | DCTH | Common Stock | Purchase | 3.6% | $98,049 | $8.53 | 11,500 | 330,834 | 11 Nov 2025 | Direct |
* marks a reported price that did not pass the local price check.