PHIONasdaqPharmaceutical PreparationsFiscal year ends December 31
Phio Pharmaceuticals Corp.
Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Aug 6, 2026
$0.87−0.00 (-0.25%)
Close on Oct 19, 2026
- Market cap
- $10.09M
- P/E (TTM)
- –
- Dividend yield
- –
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
5.6%
1M of 12M shares
Institutional holders
24
4 new, 4 sold out
Net institutional buying
-0M
In Q2 2026
Insider trades, 12 months
12 buys · 0 sales
Net bought $91.24K
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| Heights Capital Management, Inc. | 1,194,719 | 9.90% | 13G (passive) amendment | Dec 31, 2025 |
| Mitchell P. Kopin | 1,142,556 | 9.10% | 13G (passive) amendment | Dec 31, 2025 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of PHIO | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| Jane Street Group, LLC | 117,755 | 1.01% | $120.70K | −1,434 | 0.00% |
| Geode Capital Management, LLC | 114,574 | 0.99% | $117.44K | −32,680 | 0.00% |
| Vanguard Capital Management LLC | 94,262 | 0.81% | $96.62K | +14,409 | 0.00% |
| Nomura Asset Management International Inc. | 50,000 | 0.43% | $51.00K | New | 0.00% |
| Cetera Investment Advisers | 47,500 | 0.41% | $48.69K | +2,500 | 0.00% |
| Citadel Advisors LLC | 47,150 | 0.41% | $48.33K | New | 0.00% |
| Vanguard Fiduciary Trust Co | 38,169 | 0.33% | $39.12K | – | 0.00% |
| Northern Trust Corp | 27,768 | 0.24% | $28.46K | +4,010 | 0.00% |
| Two Sigma Investments, LP | 21,501 | 0.19% | $22.04K | −10,994 | 0.00% |
| XTX Topco Ltd | 18,475 | 0.16% | $18.94K | −6,393 | 0.00% |
| Hrt Financial LP | 13,182 | 0.11% | $13 | −21,550 | 0.00% |
| Bridgeway Capital Management, LLC | 12,000 | 0.10% | $12.30K | New | 0.00% |
| Citigroup Inc | 11,605 | 0.10% | $11.90K | +10,580 | 0.00% |
| Captrust Financial Advisors | 10,000 | 0.09% | $10.25K | – | 0.00% |
| Tower Research Capital LLC (TRC) | 6,206 | 0.05% | $6.36K | −1,414 | 0.00% |
| Morgan Stanley | 6,000 | 0.05% | $6.15K | – | 0.00% |
| UBS Group AG | 5,387 | 0.05% | $5.52K | −21,600 | 0.00% |
| Osaic Holdings, Inc. | 2,000 | 0.02% | $2.06K | – | 0.00% |
| Spire Wealth Management | 1,990 | 0.02% | $2.05K | −10 | 0.00% |
| SBI Securities Co., Ltd. | 1,247 | 0.01% | $1.28K | +23 | 0.00% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | % of shares | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 24 | 1M | 5.6% | 4 / 6 | 8 / 4 | 0M | 0M |
| Q1 2026 | 24 | 1M | 5.8% | 14 / 5 | 0 / 6 | 0M | 0M |
| Q4 2025 | 17 | 0M | 3.1% | 8 / 5 | 0 / 2 | 0M | 0M |
| Q3 2025 | 11 | 0M | 1.6% | 3 / 4 | 1 / 3 | 0M | 0M |
| Q2 2025 | 11 | 0M | 1.4% | 4 / 3 | 1 / 4 | 0M | 0M |
| Q1 2025 | 11 | 0M | 0.9% | 3 / 4 | 3 / 3 | 0M | 0M |
| Q4 2024 | 11 | 0M | 1.3% | 7 / 2 | 0 / 2 | 0M | 0M |
| Q3 2024 | 6 | 0M | 0.2% | 6 / 0 | 0 / 0 | 0M | 0M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
| Fund | Shares | % of PHIO | Value | % of fund | As of |
|---|---|---|---|---|---|
| Vanguard Extended Market Index Fund | 94,262 | 0.81% | $96.62K | 0.00% | Jun 30, 2026 |
| Fidelity Extended Market Index Fund | 80,599 | 0.69% | $89.46K | 0.00% | May 31, 2026 |
| Nomura Healthcare Fund | 50,000 | 0.43% | $51.25K | 0.01% | Jun 30, 2026 |
| Fidelity Series Total Market Index Fund | 14,664 | 0.13% | $16.28K | 0.00% | May 31, 2026 |
| Fidelity Total Market Index Fund | 13,285 | 0.11% | $14.75K | 0.00% | May 31, 2026 |
| Ultra-Small Company Fund | 12,000 | 0.10% | $12.30K | 0.01% | Jun 30, 2026 |
| Blackstone Alternative Multi-Strategy Fund | 4 | 0.00% | $4 | 0.00% | Jun 30, 2026 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | % of shares | Latest filing |
|---|---|---|---|---|
| Robert J. Bitterman | Chairman, Pres. & CEO, Director | 764,871 | 6.58% | Sep 29, 2026 |
| Lisa Cabott Carson | Chief Financial Officer | 189,112 | 1.63% | Sep 29, 2026 |
| Ronald Todd Plott | Director | 42,000 | 0.36% | Sep 30, 2026 |
| Patricia A. Bradford | Director | 64,151 | 0.55% | Sep 25, 2026 |
| David H. Deming | Director | 37,800 | 0.33% | Feb 6, 2026 |
| Curtis Lockshin | Director | 35,155 | 0.30% | Feb 6, 2026 |
| Jonathan E. Freeman | Director | 32,655 | 0.28% | Feb 6, 2026 |
| Robert L. Ferrara | Director | 38,666 | 0.33% | Sep 15, 2025 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| Ronald Todd Plott Director | Sep 29, 2026 | Buy | +5,000 | $1.04 | $5.20K | 42,000 |
| Ronald Todd Plott Director | Sep 28, 2026 | Buy | +5,000 | $1.03 | $5.15K | 37,000 |
| Lisa Cabott Carson Chief Financial Officer | Sep 28, 2026 | Award | +108,000 | – | – | 189,112 |
| Robert J. Bitterman Chairman, Pres. & CEO, Director | Sep 28, 2026 | Award | +400,000 | – | – | 764,871 |
| Ronald Todd Plott Director | Sep 28, 2026 | Award | +17,000 | – | – | 32,000 |
| Patricia A. Bradford Director | Sep 24, 2026 | Buy | +6,500 | $1.01 | $6.57K | 64,151 |
| Robert J. Bitterman Chairman, Pres. & CEO, Director | Sep 22, 2026 | Buy | +2,000 | $1.03 | $2.06K | 364,871 |
| Patricia A. Bradford Director | Sep 15, 2026 | Buy | +12,000 | $1.03 | $12.36K | 57,651 |
| Lisa Cabott Carson Chief Financial Officer | Sep 11, 2026 | Tax withholding | −12,888 | $1.03 | $13.27K | 81,112 |
| Robert J. Bitterman Chairman, Pres. & CEO, Director | Sep 11, 2026 | Tax withholding | −68,550 | $1.03 | $70.61K | 362,871 |
| Ronald Todd Plott Director | Aug 19, 2026 | Buy | +15,000 | $1.14 | $17.10K | 15,000 |
| Robert J. Bitterman Chairman, Pres. & CEO, Director | Aug 18, 2026 | Buy | +10,000 | $1.06 | $10.60K | 431,421 |
| Robert J. Bitterman Chairman, Pres. & CEO, Director | Jun 26, 2026 | Buy | +10,000 | $0.99 | $9.90K | 421,421 |
| Curtis Lockshin Director | Feb 5, 2026 | Award | +16,600 | – | – | 35,155 |
| Jonathan E. Freeman Director | Feb 5, 2026 | Award | +16,600 | – | – | 32,655 |
| Lisa Cabott Carson Chief Financial Officer | Feb 5, 2026 | Award | +47,000 | – | – | 94,000 |
| David H. Deming Director | Feb 5, 2026 | Award | +23,800 | – | – | 37,800 |
| Robert J. Bitterman Chairman, Pres. & CEO, Director | Feb 5, 2026 | Award | +120,000 | – | – | 411,421 |
| Patricia A. Bradford Director | Feb 5, 2026 | Award | +18,500 | – | – | 45,651 |
| Robert J. Bitterman Chairman, Pres. & CEO, Director | Dec 31, 2025 | Buy | +5,000 | $1.03 | $5.15K | 291,421 |
| Robert J. Bitterman Chairman, Pres. & CEO, Director | Dec 23, 2025 | Buy | +5,000 | $1.02 | $5.10K | 286,421 |
| Robert J. Bitterman Chairman, Pres. & CEO, Director | Nov 21, 2025 | Buy | +5,000 | $1.14 | $5.70K | 281,421 |
| Robert J. Bitterman Chairman, Pres. & CEO, Director | Nov 18, 2025 | Buy | +5,000 | $1.27 | $6.35K | 276,421 |
| Patricia A. Bradford Director | Sep 11, 2025 | Award | +18,800 | – | – | 27,151 |
| Robert J. Bitterman Chairman, Pres. & CEO, Director | Sep 11, 2025 | Award | +250,000 | – | – | 271,421 |
| Robert J. Bitterman Chairman, Pres. & CEO, Director | Sep 11, 2025 | Tax withholding | −4,111 | $2.32 | $9.54K | 21,421 |
| David H. Deming Director | Sep 11, 2025 | Award | +14,000 | – | – | 14,000 |
| Lisa Cabott Carson VP, Finance and Administration | Sep 11, 2025 | Award | +47,000 | – | – | 47,000 |
| Curtis Lockshin Director | Sep 11, 2025 | Award | +16,200 | – | – | 18,555 |
| Jonathan E. Freeman Director | Sep 11, 2025 | Award | +14,700 | – | – | 16,055 |
| Robert L. Ferrara Director | Sep 11, 2025 | Award | +23,000 | – | – | 38,666 |
| Robert L. Ferrara Director | Sep 11, 2025 | Award | +23,100 | – | – | 38,766 |
| Robert J. Bitterman Chairman, Pres & CEO, Director | Jun 10, 2025 | Buy | +2,000 | $2.42 | $4.84K | 27,149 |
| Robert L. Ferrara Director | Jun 10, 2025 | Buy | +2,500 | $2.42 | $6.05K | 15,666 |
| Robert J. Bitterman Chairman, Pres & CEO, Director | Jun 9, 2025 | Buy | +1,500 | $2.75 | $4.13K | 25,149 |
| Robert J. Bitterman Chairman, Pres & CEO, Director | May 22, 2025 | Buy | +1,200 | $1.78 | $2.14K | 23,649 |
| Robert J. Bitterman Chairman, Pres & CEO, Director | May 21, 2025 | Buy | +3,000 | $1.77 | $5.31K | 22,449 |
| Robert L. Ferrara Director | May 20, 2025 | Buy | +2,500 | $1.82 | $4.55K | 13,166 |
| Robert J. Bitterman Chairman, Pres & CEO, Director | Sep 11, 2024 | Award | +15,500 | – | – | 17,832 |
| Robert M. Infarinato VP, CFO | Sep 11, 2024 | Award | +3,000 | – | – | 11,000 |
| Jonathan E. Freeman Director | Sep 11, 2024 | Award | +1,000 | – | – | 1,000 |
| Curtis Lockshin Director | Sep 11, 2024 | Award | +2,000 | – | – | 2,000 |
| Patricia A. Bradford Director | Sep 11, 2024 | Award | +8,000 | – | – | 8,000 |
| Robert L. Ferrara Director | Sep 11, 2024 | Award | +10,000 | – | – | 10,000 |
| Robert M. Infarinato VP, Chief Financial Officer | Aug 13, 2024 | Award | +8,000 | – | – | 8,000 |
| Robert J. Bitterman President & CEO, Director | Jun 7, 2024 | Buy | +1,000 | $0.74 | $740 | 20,990 |
| Robert J. Bitterman President & CEO, Director | Jun 6, 2024 | Buy | +1,000 | $0.75 | $750 | 19,990 |
| Caitlin Kontulis Secretary & VP Finance & Admin | Mar 1, 2024 | Tax withholding | −335 | $0.96 | $322 | 10,643 |
| Robert J. Bitterman President & CEO, Director | Feb 26, 2024 | Buy | +2,500 | $0.91 | $2.28K | 18,990 |
| Robert J. Bitterman President & CEO, Director | Feb 20, 2024 | Tax withholding | −1,804 | $0.76 | $1.37K | 16,490 |
| Caitlin Kontulis Secretary & VP Finance & Admin | Feb 17, 2024 | Tax withholding | −523 | $0.66 | $345 | 10,978 |
| Caitlin Kontulis Secretary & VP Finance & Admin | Feb 15, 2024 | Tax withholding | −658 | $0.65 | $428 | 11,501 |
| Robert J. Bitterman President & CEO, Director | Oct 1, 2023 | Tax withholding | −917 | $1.51 | $1.38K | 18,294 |
| Robert J. Bitterman President & CEO, Director | Jul 1, 2023 | Buy | +1,000 | $2.84 | $2.84K | 19,211 |
| Robert J. Bitterman President & CEO, Director | Jun 30, 2023 | Buy | +1,000 | $2.88 | $2.88K | 18,211 |
| Robert L. Ferrara Director | Jun 14, 2023 | Buy | +2,000 | $3.10 | $6.20K | 6,000 |
| Caitlin Kontulis Secretary & VP Finance & Admin | Mar 1, 2023 | Tax withholding | −335 | $5.49 | $1.84K | 12,159 |
| Robert J. Bitterman President & CEO, Director | Feb 20, 2023 | Award | +11,000 | – | – | 17,211 |
| Jonathan E. Freeman Director | Feb 17, 2023 | Award | +1,500 | – | – | 3,197 |
| Patricia A. Bradford Director | Feb 17, 2023 | Award | +1,500 | – | – | 3,167 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.