Delcath Systems DCTH Insider Ownership

NASDAQ DCTH

$14.70 -0.06 (-0.41%)

As of: Oct 21, 2026 · 3:07 PM EDT

Insider Holdings by Owner

23.46Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026

Insider Ownership

27.37%

■0% pp QoQ

Shares Held by Insiders

9.83Mn

filed for Sep 2026

■0.00% QoQ

Shares Outstanding

35.89Mn

35,891,915 shares

Direct Holdings

2.89Mn

Indirect: 6.94Mn

Net Shares Traded (QoQ)

no net change in Sep 2026

Insiders Holding Shares

with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Insiders

Bought Sold

Latest quarter —

Net over range —

Buying quarters —

Insider Ownership Summary

Updated Oct 16, 2026

Across the past 12 months, open-market trades by Delcath Systems insiders were all purchases, totaling $287,368 (32.62K shares).

A count shows 3 insiders buying DCTH stock on the open market over the past 12 months and none selling.
Among DCTH's insiders, Gerard J. Michel (Chief Executive Officer) was the top open-market buyer in the past 12 months, with $198,358 of stock purchased (22.7K shares) and the latest purchase on March 2, 2026.
The latest open-market trade on record is a purchase of 5.53K shares for $50,018 by Sandra Pennell (Chief Financial Officer) on March 6, 2026.
In transactions other than open-market trades, Delcath Systems insiders acquired 3.63K shares through option exercises and conversions over the past 12 months.
Business Quant data shows Delcath Systems insiders holding 9.8Mn shares in total in their latest Form 4 filings, down 0.24% from 9.83Mn shares at the end of Q2 2026 and down 0.23% from 9.82Mn shares at the end of Q3 2025.
Indirect holdings, through trusts, partnerships, family members and other entities, make up 70.55% (6.91Mn shares) of Delcath Systems' insider total, with the other 29.45% (2.89Mn shares) held directly.
The insider holdings in Delcath Systems belong to 9 insiders who have reported on Form 4 within the past two years.
Delcath Systems' top three insider holders by shares held are Gil Aharon (Director, 4.15Mn shares), Rosalind Advisors, Inc. (Director, 3.39Mn shares) and Steven A. J. Salamon (Director, 1.56Mn shares).
Gil Aharon alone accounts for 42.39% of the shares held by Delcath Systems insiders.
Institutions held 48.54% of Delcath Systems' outstanding shares in their Q2 2026 13F filings, insiders about 27.31% based on their latest Form 4 filings, and other investors, including the public, the remaining 24.15%.
In the past year, 12 insiders of Delcath Systems submitted 16 Form 4 filings reporting trades, awards or other transactions.
Insider figures for DCTH include Form 4 filings through October 14, 2026.

Form 4 Holdings

Insiders Holding DCTH

Insiders 10

Shares held 23.46Mn

Of outstanding 65.36%

#	Insider	Position	Direct	Indirect	Total	Share of Insiders	Last Filed
1	Advisors, Inc. Rosalind	Director	0	10,025,844	10,025,844	42.7%	14 Oct, 2026
2	Steven A J Salamon	Director	455,315	6,146,054	6,601,369	28.1%	09 May, 2025
3	Gil Aharon	Director	0	6,094,739	6,094,739	26.0%	09 May, 2025
4	Gerard J Michel	Chief Executive Officer	342,034	0	342,034	1.5%	03 Mar, 2026
5	Vojo Vukovic	Chief Medical Officer	168,882	0	168,882	0.7%	13 Jun, 2025
6	Sandra Pennell	Chief Financial Officer	77,018	0	77,018	0.3%	06 Mar, 2026
7	David L. Hoffman	Gen'L Counsel, Cco Secy	74,330	0	74,330	0.3%	19 Mar, 2024
8	John Purpura	Chief Operating Officer	41,526	0	41,526	0.2%	17 Oct, 2023
9	Kevin Muir	Gm Interventional Oncology	18,582	0	18,582	0.1%	19 Mar, 2024
10	John Richard Sylvester	Director	14,936	0	14,936	0.1%	25 Nov, 2025

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

574 Insider Transactions

Source SEC Form 4

Latest quarter Sep 2026

Date	Insider	Position	Transaction	Shares	Price	Value	Shares Held After	Ownership
13 Oct, 2026	Advisors, Inc. Rosalind	Director	Acquired C	3,627	$0.00	$0	3,417,095	Indirect
13 Oct, 2026	Advisors, Inc. Rosalind	Director	Disposed J	27,502	$0.00	$0	3,389,593	Indirect
13 Oct, 2026	Advisors, Inc. Rosalind	Director	Disposed C	36	$0.00	$0	9,112	Indirect
13 May, 2026	Bridget A Martell	Director	Acquired A	22,500	$0.00	$0	22,500	Direct
13 May, 2026	Gil Aharon	Director	Acquired A	22,500	$0.00	$0	22,500	Direct
13 May, 2026	Elizabeth Czerepak	Director	Acquired A	22,500	$0.00	$0	22,500	Direct
13 May, 2026	John Richard Sylvester	Director	Acquired A	22,500	$0.00	$0	22,500	Direct
13 May, 2026	Steven A J Salamon	Director	Acquired A	22,500	$0.00	$0	22,500	Direct
06 Mar, 2026	Sandra Pennell	Chief Financial Officer	Acquired P	5,533	$9.04	$50.02K	77,018	Direct
02 Mar, 2026	Gerard J Michel	Chief Executive Officer	Acquired P	11,200	$8.96	$100.31K	342,034	Direct
17 Feb, 2026	Sandra Pennell	Chief Financial Officer	Acquired A	56,500	$0.00	$0	56,500	Direct
17 Feb, 2026	Martha S. Rook	Chief Operating Officer	Acquired A	56,500	$0.00	$0	56,500	Direct
17 Feb, 2026	Kevin Muir	Gm Interventional Oncology	Acquired A	56,500	$0.00	$0	56,500	Direct
17 Feb, 2026	Gerard J Michel	Chief Executive Officer	Acquired A	195,000	$0.00	$0	195,000	Direct
17 Feb, 2026	David L. Hoffman	Gen'L Counsel, Cco Secy	Acquired A	56,500	$0.00	$0	56,500	Direct
17 Feb, 2026	Vojo Vukovic	Chief Medical Officer	Acquired A	56,500	$0.00	$0	56,500	Direct
17 Feb, 2026	Vojo Vukovic	Chief Medical Officer	Acquired A	28,250	$0.00	$0	28,250	Direct
17 Feb, 2026	Gerard J Michel	Chief Executive Officer	Acquired A	97,500	$0.00	$0	97,500	Direct
17 Feb, 2026	David L. Hoffman	Gen'L Counsel, Cco Secy	Acquired A	28,250	$0.00	$0	28,250	Direct
17 Feb, 2026	Kevin Muir	Gm Interventional Oncology	Acquired A	28,250	$0.00	$0	28,250	Direct

Showing 1 to 20 of 574 transactions