PHIO insider buying
3 cluster buysPhio Pharmaceuticals Corp.
When two or more insiders at Phio Pharmaceuticals Corp. buy PHIO on the open market around the same time, that clustered conviction is one of the highest-signal patterns in SEC filing data. Below is every cluster we've detected in PHIO plus the full record of qualifying open-market buys, each parsed directly from Form 4 filings and linked back to the source on SEC EDGAR.
Detected clusters
- Aug 18 – Sep 15, 2026Detected Sep 16, 2026High conviction3 insidersTotal bought$40.1KMarket capUnknown
- Aug 18 – Aug 19, 2026Detected Aug 20, 2026High conviction2 insidersTotal bought$27.7KMarket capUnknown
- May 20 – Jun 10, 2025Detected Jun 10, 2025High conviction2 insidersTotal bought$27.0KMarket cap$11.5M
All notable open-market buys in PHIO
Every open-market Form 4 purchase, newest first. Click an insider to see their full buying record across companies.
| Date | Insider | Shares | Price | Value | Filing |
|---|---|---|---|---|---|
| Sep 15, 2026 | BRADFORD PATRICIA Acluster Director | 12,000 | $1.03 | $12.4K | SEC ↗ |
| Aug 19, 2026 | Plott Ronald Toddcluster Director | 15,000 | $1.14 | $17.1K | SEC ↗ |
| Aug 18, 2026 | Bitterman Robert Jcluster Director, Chairman, Pres. & CEO | 10,000 | $1.06 | $10.6K | SEC ↗ |
| Dec 31, 2025 | Director, Chairman, Pres. & CEO | 5,000 | $1.03 | $5.2K | SEC ↗ |
| Dec 23, 2025 | Director, Chairman, Pres. & CEO | 5,000 | $1.02 | $5.1K | SEC ↗ |
| Nov 21, 2025 | Director, Chairman, Pres. & CEO | 5,000 | $1.14 | $5.7K | SEC ↗ |
| Nov 18, 2025 | Director, Chairman, Pres. & CEO | 5,000 | $1.27 | $6.4K | SEC ↗ |
| Jun 10, 2025 | Ferrara Robert Lcluster Director | 2,500 | $2.42 | $6.1K | SEC ↗ |
| Jun 10, 2025 | Bitterman Robert Jcluster Director, Chairman, Pres & CEO | 2,000 | $2.42 | $4.8K | SEC ↗ |
| Jun 9, 2025 | Bitterman Robert Jcluster Director, Chairman, Pres & CEO | 1,500 | $2.75 | $4.1K | SEC ↗ |
| May 22, 2025 | Bitterman Robert Jcluster Director, Chairman, Pres & CEO | 1,200 | $1.78 | $2.1K | SEC ↗ |
| May 21, 2025 | Bitterman Robert Jcluster Director, Chairman, Pres & CEO | 3,000 | $1.77 | $5.3K | SEC ↗ |
| May 20, 2025 | Ferrara Robert Lcluster Director | 2,500 | $1.82 | $4.6K | SEC ↗ |
| Jun 7, 2024 | Director, President & CEO | 1,000 | $0.74 | $740.0 | SEC ↗ |
| Jun 6, 2024 | Director, President & CEO | 1,000 | $0.75 | $750.0 | SEC ↗ |
PHIO insider buying — FAQ
- Are insiders buying PHIO stock?
- Yes — 5 distinct insiders have bought PHIO (Phio Pharmaceuticals Corp.) on the open market, including 3 cluster buys where two or more insiders bought within a rolling window. The most recent qualifying activity was Sep 16, 2026.
- How much PHIO stock have insiders bought?
- Insiders have bought a combined $90.9K of PHIO across 15 open-market purchases, based on SEC Form 4 filings.
- What is an insider cluster buy in PHIO?
- A cluster buy is two or more distinct Phio Pharmaceuticals Corp. insiders — officers, directors, or 10% owners — each buying PHIO on the open market within a rolling window. PHIO has 3 detected cluster buys to date.
- Where does this PHIO insider trading data come from?
- Every figure is parsed directly from SEC Form 4 filings on EDGAR, and each purchase on this page links back to its original filing document.
How we track insider buying in PHIO
We continuously poll SEC EDGAR for new Form 4 filings and parse every open-market purchase (transaction code P). A cluster is recorded when two or more distinct insiders — officers, directors, or 10% owners — each buy PHIO within a rolling window. We track clusters at every company size, from micro-caps to mega-caps. Every figure on this page traces back to an official filing; open any row to jump straight to the source document. What counts as a cluster buy?
This page is informational and reflects public filing data. It is not investment advice or a recommendation regarding PHIO.