SELLAS Life Sciences Group, Inc. (SLS) Insider Ownership

Historic Ownership Trends

According to recent filings covering the 90 days ending December 12, 2025, the three most significant insider holders at SELLAS Life Sciences Group are President And CEO Angelos M. Stergiou (686.97K shares), SVP And Chief Development Officer Dragan Cicic (257.81K shares), Cfo John Thomas Burns (254.33K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares Report Date
Angelos M. Stergiou President And CEO 686,966 05 Dec, 2025
Dragan Cicic SVP And Chief Development Officer 257,805 05 Dec, 2025
John Thomas Burns Cfo 254,327 05 Dec, 2025
Barbara A Wood EVP And Gen. Counsel And Corp. Sec. 117,225 25 Jan, 2024
Katherine Bach Kalin 104,400 21 Nov, 2025
Robert Francomano Chief Commercial Officer 40,918 25 Jan, 2024
Jane Wasman 30,400 02 Jun, 2025
David A Scheinberg 23,082 14 Jan, 2025
John Varian 22,900 14 Jan, 2025
Nostrand Robert L Van 20,400 13 Jun, 2025

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
03 Dec, 2025 Angelos M. Stergiou Common Stock D 187,066 $1.50 686,966 D J
03 Dec, 2025 John Thomas Burns Common Stock D 58,592 $1.50 254,327 D J
03 Dec, 2025 Dragan Cicic Common Stock D 63,800 $1.50 257,805 D J
19 Nov, 2025 Katherine Bach Kalin Common Stock A 63,400 $1.59 104,400 D P
12 Jun, 2025 Nostrand Robert L Van Common Stock A 10,000 $1.48 20,400 D P
12 Jun, 2025 Nostrand Robert L Van - - 20,400 D
30 May, 2025 Jane Wasman - - 30,400 D
30 May, 2025 Jane Wasman Common Stock A 20,000 $1.69 30,400 D P
22 May, 2025 Katherine Bach Kalin Common Stock A 20,000 $1.80 41,000 D P
10 Jan, 2025 Nostrand Robert L Van Common Stock A 12,500 $0.00 22,900 D A
10 Jan, 2025 David A Scheinberg - - 23,082 D
10 Jan, 2025 Jane Wasman Common Stock A 12,500 $0.00 22,900 D A
10 Jan, 2025 John Varian Common Stock A 12,500 $0.00 22,900 D A
10 Jan, 2025 Dragan Cicic Common Stock A 113,000 $0.00 228,328 D A
10 Jan, 2025 John Thomas Burns Common Stock A 113,000 $0.00 217,762 D A
10 Jan, 2025 Katherine Bach Kalin Common Stock A 12,500 $0.00 21,000 D A
10 Jan, 2025 David A Scheinberg Common Stock A 12,500 $0.00 23,082 D A
10 Jan, 2025 Angelos M. Stergiou Common Stock A 257,000 $0.00 615,132 D A
10 Jan, 2025 Angelos M. Stergiou - - 859,032 D
10 Jan, 2025 Angelos M. Stergiou Common Stock A 243,900 $0.00 859,032 D A