Phio Pharmaceuticals Corp. (PHIO) Insider Ownership

Historic Insider Ownership Trends

Phio Pharmaceuticals's top three insider shareholders as of April 11, 2026 are Robert J Bitterman (Chairman, Pres. Ceo, 411.42K shares), Gerrit Dispersyn (President Ceo, 212.33K shares), Lisa Cabott Carson (Chief Financial Officer, 94.00K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
Robert J Bitterman Chairman, Pres. Ceo 411,421 0 06 Feb, 2026
Gerrit Dispersyn President Ceo 212,327 0 03 Mar, 2022
Lisa Cabott Carson Chief Financial Officer 94,000 0 06 Feb, 2026
Patricia A Bradford - 45,651 0 06 Feb, 2026
Robert L Ferrara - 38,766 0 15 Sep, 2025
David H Deming - 37,800 0 06 Feb, 2026
Curtis Lockshin - 35,155 0 06 Feb, 2026
Jonathan E Freeman - 32,655 0 06 Feb, 2026
Robert J Bitterman Chairman, Pres Ceo 27,149 0 11 Jun, 2025
Robert J Bitterman President Ceo 20,990 0 11 Jun, 2024
H. Paul Dorman - 20,370 0 16 Feb, 2022
Robert L Ferrara - 15,666 0 11 Jun, 2025
Robert M. Infarinato Vp, Cfo 11,000 0 13 Sep, 2024
Caitlin Kontulis Secretary Vp Finance Admin 10,643 0 05 Mar, 2024
Patricia A Bradford - 8,000 0 12 Sep, 2024
Robert M. Infarinato Vp, Chief Financial Officer 8,000 0 15 Aug, 2024
Geert Cauwenbergh Chief Executive Officer 4,235 0 22 Feb, 2023
Curtis Lockshin - 3,197 0 22 Feb, 2023
Jonathan E Freeman - 3,197 0 22 Feb, 2023
Patricia A Bradford - 3,167 0 22 Feb, 2023
Curtis Lockshin - 2,000 0 12 Sep, 2024
Jonathan E Freeman - 1,000 0 13 Sep, 2024
Robert J Bitterman Interim Executive Chairman 1 0 16 Nov, 2022

* 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
05 Feb, 2026 Jonathan E Freeman Common Stock, $.0001 par value A 16,600 $0.00 32,655 D A
05 Feb, 2026 Lisa Cabott Carson Common Stock, $.0001 par value A 47,000 $0.00 94,000 D A
05 Feb, 2026 Patricia A Bradford Common Stock, $.0001 par value A 18,500 $0.00 45,651 D A
05 Feb, 2026 Robert J Bitterman Common Stock, $.0001 par value A 120,000 $0.00 411,421 D A
05 Feb, 2026 David H Deming Common Stock, $.0001 par value A 23,800 $0.00 37,800 D A
05 Feb, 2026 Curtis Lockshin Common Stock, $.0001 par value A 16,600 $0.00 35,155 D A
31 Dec, 2025 Robert J Bitterman Common Stock, $.0001 par value A 5,000 $1.03 291,421 D P
23 Dec, 2025 Robert J Bitterman Common Stock, $.0001 par value A 5,000 $1.02 286,421 D P
21 Nov, 2025 Robert J Bitterman Common Stock, $.0001 par value A 5,000 $1.14 281,421 D P
18 Nov, 2025 Robert J Bitterman Common Stock, $.0001 par value A 5,000 $1.27 276,421 D P
11 Sep, 2025 Curtis Lockshin Common Stock, $.0001 par value A 16,200 $0.00 18,555 D A
11 Sep, 2025 David H Deming Common Stock, $.0001 par value A 14,000 $0.00 14,000 D A
11 Sep, 2025 Robert J Bitterman Common Stock, $.0001 par value D 4,111 $2.32 21,421 D F
11 Sep, 2025 Jonathan E Freeman Common Stock, $.0001 par value A 14,700 $0.00 16,055 D A
11 Sep, 2025 Lisa Cabott Carson Common Stock, $.0001 par value A 47,000 $0.00 47,000 D A
11 Sep, 2025 Patricia A Bradford Common Stock, $.0001 par value A 18,800 $0.00 27,151 D A
11 Sep, 2025 Robert L Ferrara Common Stock, $.0001 par value A 23,000 $0.00 38,666 D A
11 Sep, 2025 Robert L Ferrara Common Stock, $.0001 par value A 23,100 $0.00 38,766 D A
11 Sep, 2025 Robert J Bitterman Common Stock, $.0001 par value A 250,000 $0.00 271,421 D A
10 Jun, 2025 Robert J Bitterman Common Stock, $0.0001 par value A 2,000 $2.42 27,149 D P