Phio Pharmaceuticals Corp. (PHIO) has 19 known insider and institutional holders on record. The largest holder is Opko Health, Inc. with 67,241,380 shares. Other notable holders include Galena Biopharma, Inc. and Advanced RNA Technologies, LLC.
Over the last 12 months, insiders have made 25 transactions in PHIO stock — 23 buys (valued at $49.31K) and 0 sells (valued at RSU Award). Insider buying has outpaced selling during this period, which may signal confidence in the company's prospects.
PHIO Insider Ownership
Top Holder
Opko Health, Inc.
67,241,380 shares
Buys (12 mo)
23
$49.31K value
Sells (12 mo)
0
$0.00 value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Opko Health, Inc. |
10 Percent Owner |
67,241,380 |
2013-03-13 |
|
| 2 |
Galena Biopharma, Inc. |
10 Percent Owner |
33,305,595 |
2013-05-02 |
|
| 3 |
Advanced Rna Technologies, Llc |
Officer |
1,221,723 |
2014-08-04 |
|
| 4 |
Eliseev Alexey |
Chief Business Officer |
1,100,931 |
2017-09-07 |
|
| 5 |
Bitterman Robert J |
Chairman, Pres. & CEO |
411,421 |
2026-02-06 |
|
| 6 |
Barrett John A |
Chief Development Officer |
222,991 |
2019-04-24 |
|
| 7 |
Dispersyn Gerrit |
President & CEO |
212,327 |
2022-03-03 |
|
| 8 |
Carson Lisa Cabott |
Chief Financial Officer |
94,000 |
2026-02-06 |
|
| 9 |
Bradford Patricia A |
Director |
45,651 |
2026-02-06 |
|
| 10 |
Ferrara Robert L |
Director |
38,666 |
2025-09-15 |
|
| 11 |
Deming David H |
Director |
37,800 |
2026-02-06 |
|
| 12 |
Lockshin Curtis |
Director |
35,155 |
2026-02-06 |
|
| 13 |
Freeman Jonathan E |
Director |
32,655 |
2026-02-06 |
|
| 14 |
Dorman H. Paul |
Director |
20,370 |
2022-02-16 |
|
| 15 |
Brownlie Keith L |
Director |
20,000 |
2019-02-15 |
|
| 16 |
Infarinato Robert M. |
VP, CFO |
11,000 |
2024-09-13 |
|
| 17 |
Kontulis Caitlin |
Secretary & VP Finance & Admin |
10,643 |
2024-03-05 |
|
| 18 |
Pavco Pamela |
Chief Development Officer |
7,000 |
2017-02-03 |
|
| 19 |
Cauwenbergh Geert |
Director |
4,235 |
2023-02-22 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-02-05 |
Carson Lisa Cabott |
Chief Financial Officer |
RSU Award |
47,000 |
- |
- |
| 2026-02-05 |
Freeman Jonathan E |
Director |
RSU Award |
16,600 |
- |
- |
| 2026-02-05 |
Deming David H |
Director |
RSU Award |
23,800 |
- |
- |
| 2026-02-05 |
Lockshin Curtis |
Director |
RSU Award |
16,600 |
- |
- |
| 2026-02-05 |
Bradford Patricia A |
Director |
RSU Award |
18,500 |
- |
- |
| 2026-02-05 |
Bitterman Robert J |
Chairman, Pres. & CEO |
RSU Award |
120,000 |
- |
- |
| 2025-12-31 |
Bitterman Robert J |
Chairman, Pres. & CEO |
Informative Buy |
5,000 |
$1.03 |
$5.15K |
| 2025-12-23 |
Bitterman Robert J |
Chairman, Pres. & CEO |
Informative Buy |
5,000 |
$1.02 |
$5.1K |
| 2025-11-21 |
Bitterman Robert J |
Chairman, Pres. & CEO |
Informative Buy |
5,000 |
$1.14 |
$5.7K |
| 2025-11-18 |
Bitterman Robert J |
Chairman, Pres. & CEO |
Informative Buy |
5,000 |
$1.27 |
$6.35K |
| 2025-09-11 |
Carson Lisa Cabott |
VP, Finance and Administration |
RSU Award |
47,000 |
- |
- |
| 2025-09-11 |
Ferrara Robert L |
Director |
RSU Award |
23,100 |
- |
- |
| 2025-09-11 |
Ferrara Robert L |
Director |
RSU Award |
23,000 |
- |
- |
| 2025-09-11 |
Freeman Jonathan E |
Director |
RSU Award |
14,700 |
- |
- |
| 2025-09-11 |
Deming David H |
Director |
RSU Award |
14,000 |
- |
- |
| 2025-09-11 |
Lockshin Curtis |
Director |
RSU Award |
16,200 |
- |
- |
| 2025-09-11 |
Bradford Patricia A |
Director |
RSU Award |
18,800 |
- |
- |
| 2025-09-11 |
Bitterman Robert J |
Chairman, Pres. & CEO |
Tax Withholding of RSU |
4,111 |
$2.32 |
$9.54K |
| 2025-06-06 |
Carson Lisa Cabott |
Officer |
Unknown |
- |
- |
- |
| 2025-06-10 |
Ferrara Robert L |
Director |
Informative Buy |
2,500 |
$2.42 |
$6.05K |
| 2025-06-10 |
Bitterman Robert J |
Chairman, Pres & CEO |
Informative Buy |
2,000 |
$2.42 |
$4.84K |
| 2025-06-09 |
Bitterman Robert J |
Chairman, Pres & CEO |
Informative Buy |
1,500 |
$2.75 |
$4.13K |
| 2025-05-22 |
Bitterman Robert J |
Chairman, Pres & CEO |
Informative Buy |
1,200 |
$1.78 |
$2.14K |
| 2025-05-21 |
Bitterman Robert J |
Chairman, Pres & CEO |
Informative Buy |
3,000 |
$1.77 |
$5.31K |
| 2025-05-20 |
Ferrara Robert L |
Director |
Informative Buy |
2,500 |
$1.82 |
$4.55K |
