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Phio Pharmaceuticals Corp. (PHIO) institutional ownership

Latest close $1.07 Jul 23, 2026
Market cap$14M 52-week range SectorHealthcare
Funds holding · Q1 2023
12
reported PHIO position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q1 2023
Activity unavailable N/A
0 buyers · 12 sellers

Phio Pharmaceuticals Corp. (PHIO) price and institutional activity

Dates

Q1 2023

$0 bought by 0 investors
$0 sold by 12 investors
Renaissance Technologies LLCVanguard +10 more
Bought Sold Totals per quarter; hover a bar for the names.

Phio Pharmaceuticals Corp. (PHIO) institutional activity · 12

Investor Type Est. change Change Δ Own Date
Renaissance Technologies LLC Exited· Q1 2023 −167K −100.0% Q1 2023
Vanguard · Exited
Change −155K Δ Own −100.0% Date Q1 2023
Vanguard Exited· Q1 2023 −155K −100.0% Q1 2023
Geode · Exited
Change −107K Δ Own −100.0% Date Q1 2023
Geode Exited· Q1 2023 −107K −100.0% Q1 2023
Cetera Investment Advisers · Exited
Change −75K Δ Own −100.0% Date Q1 2023
Cetera Investment Advisers Exited· Q1 2023 −75K −100.0% Q1 2023
UBS Group AG · Exited
Change −23K Δ Own −100.0% Date Q1 2023
UBS Group AG Exited· Q1 2023 −23K −100.0% Q1 2023
Two Sigma Investments, LP · Exited
Change −22K Δ Own −100.0% Date Q1 2023
Two Sigma Investments, LP Exited· Q1 2023 −22K −100.0% Q1 2023
Two Sigma Securities, LLC · Exited
Change −20K Δ Own −100.0% Date Q1 2023
Two Sigma Securities, LLC Exited· Q1 2023 −20K −100.0% Q1 2023
Tower Research Capital LLC (trc) · Exited
Change −5K Δ Own −100.0% Date Q1 2023
Tower Research Capital LLC (trc) Exited· Q1 2023 −5K −100.0% Q1 2023
Morgan Stanley · Exited
Change −2K Δ Own −100.0% Date Q1 2023
Morgan Stanley Exited· Q1 2023 −2K −100.0% Q1 2023
Wells Fargo & Company · Exited
Change −93 Δ Own −100.0% Date Q1 2023
Wells Fargo & Company Exited· Q1 2023 −93 −100.0% Q1 2023
JPMorgan Chase & Co · Exited
Change −50 Δ Own −100.0% Date Q1 2023
JPMorgan Chase & Co Exited· Q1 2023 −50 −100.0% Q1 2023
BlackRock · Exited
Change −19 Δ Own −100.0% Date Q1 2023
BlackRock Exited· Q1 2023 −19 −100.0% Q1 2023
Data through Q1 2023 · filed May 15, 2023
12 of 12

Famous investor activity in Phio Pharmaceuticals Corp. (PHIO)

Phio Pharmaceuticals Corp. (PHIO) insider trading

Company insiders, action and economics first; trade and filed dates last.
Dates
Insider Title Type Price Qty Value Owned ΔOwn Trade date Filed date
Bitterman Robert J. · Director Buy +$10K
Price $0.99 Qty +10K Owned 421K ΔOwn +2.4% Trade date Jun 26, 2026 Filed date Jun 29, 2026
Bitterman Robert J. Director Buy $0.99 +10K +$10K 421K +2.4% Jun 26, 2026 Jun 29, 2026
Lockshin Curtis · Director Grant (A) 17K
Owned 35K Trade date Feb 5, 2026 Filed date Feb 6, 2026
Lockshin Curtis Director Grant (A) 17K 35K Feb 5, 2026 Feb 6, 2026
Freeman Jonathan E. · Director Grant (A) 17K
Owned 33K Trade date Feb 5, 2026 Filed date Feb 6, 2026
Freeman Jonathan E. Director Grant (A) 17K 33K Feb 5, 2026 Feb 6, 2026
Deming David H. · Director Grant (A) 24K
Owned 38K Trade date Feb 5, 2026 Filed date Feb 6, 2026
Deming David H. Director Grant (A) 24K 38K Feb 5, 2026 Feb 6, 2026
Carson Lisa Cabott · Officer Grant (A) 47K
Owned 94K Trade date Feb 5, 2026 Filed date Feb 6, 2026
Carson Lisa Cabott Officer Grant (A) 47K 94K Feb 5, 2026 Feb 6, 2026
Bradford Patricia A. · Director Grant (A) 18K
Owned 46K Trade date Feb 5, 2026 Filed date Feb 6, 2026
Bradford Patricia A. Director Grant (A) 18K 46K Feb 5, 2026 Feb 6, 2026
Bitterman Robert J. · Director, Officer Grant (A) 120K
Owned 411K Trade date Feb 5, 2026 Filed date Feb 6, 2026
Bitterman Robert J. Director, Officer Grant (A) 120K 411K Feb 5, 2026 Feb 6, 2026
Bitterman Robert J. · Director, Officer Buy +$5K
Price $1.03 Qty +5K Owned 291K Trade date Dec 31, 2025 Filed date Jan 2, 2026
Bitterman Robert J. Director, Officer Buy $1.03 +5K +$5K 291K Dec 31, 2025 Jan 2, 2026
Bitterman Robert J. · Director, Officer Buy +$5K
Price $1.02 Qty +5K Owned 286K Trade date Dec 23, 2025 Filed date Dec 29, 2025
Bitterman Robert J. Director, Officer Buy $1.02 +5K +$5K 286K Dec 23, 2025 Dec 29, 2025
Bitterman Robert J. · Director, Officer Buy +$6K
Price $1.14 Qty +5K Owned 281K Trade date Nov 21, 2025 Filed date Nov 24, 2025
Bitterman Robert J. Director, Officer Buy $1.14 +5K +$6K 281K Nov 21, 2025 Nov 24, 2025
Bitterman Robert J. · Director, Officer Buy +$6K
Price $1.27 Qty +5K Owned 276K Trade date Nov 18, 2025 Filed date Nov 19, 2025
Bitterman Robert J. Director, Officer Buy $1.27 +5K +$6K 276K Nov 18, 2025 Nov 19, 2025
Deming David H. · Director Grant (A) 14K
Owned 14K Trade date Sep 11, 2025 Filed date Sep 15, 2025
Deming David H. Director Grant (A) 14K 14K Sep 11, 2025 Sep 15, 2025
Lockshin Curtis · Director Grant (A) 16K
Owned 19K Trade date Sep 11, 2025 Filed date Sep 15, 2025
Lockshin Curtis Director Grant (A) 16K 19K Sep 11, 2025 Sep 15, 2025
Freeman Jonathan E. · Director Grant (A) 15K
Owned 16K Trade date Sep 11, 2025 Filed date Sep 15, 2025
Freeman Jonathan E. Director Grant (A) 15K 16K Sep 11, 2025 Sep 15, 2025
Ferrara Robert L. · Director Grant (A) 23K
Owned 39K Trade date Sep 11, 2025 Filed date Sep 15, 2025
Ferrara Robert L. Director Grant (A) 23K 39K Sep 11, 2025 Sep 15, 2025
15 of 19
15 of 19 Sign in to continue to older insider transactions.

Phio Pharmaceuticals Corp. (PHIO) activist and large shareholders

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
Cvi Investments, Inc. 1.2M
% of shares outstanding 9.9% Filing date Feb 17, 2026
Cvi Investments, Inc. 1.2M 9.9% Feb 17, 2026
Mitchell P. Kopin 1.1M
% of shares outstanding 9.1% Filing date Feb 13, 2026
Mitchell P. Kopin 1.1M 9.1% Feb 13, 2026
Orca Capital AG 539K
% of shares outstanding 4.9% Filing date Dec 11, 2025
Orca Capital AG 539K 4.9% Dec 11, 2025
3 of 3

Phio Pharmaceuticals Corp. (PHIO) ownership FAQ

Who owns PHIO?

12 reporting institutions disclosed PHIO position changes in the Q1 2023 snapshot.

How is institutional activity calculated?

For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2023.

What are activist and large shareholder filings?

An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.

Where does this data come from?

Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.

Why are ownership reports delayed?

Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.

How are missing table values shown?

A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.