PHIO insider buying and SEC filings, explained
Phio Pharmaceuticals Corp. · CIK 1533040
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Insider activity in the last 12 months
Bought
$50K
Insiders who bought
3
Sold (not marked 10b5-1)
$0
Planned sales (10b5-1)
$0
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Sep 28–29, 2026 | Purchase (code P) | Ronald Todd Plott (Director) bought 10,000 shares between Sep 28 and Sep 29 at about $1.04 ($10K), reported as a purchase (code P). Holdings up 31% to 42,000 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 30, 2026 |
| Sep 24, 2026 | Purchase (code P) | Patricia A. Bradford (Director) bought 6,500 shares at $1.01 ($7K), reported as a purchase (code P). Holdings up 11% to 64,151 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 25, 2026 |
| Sep 22, 2026 | Purchase (code P) | Robert J Bitterman (CEO and Director) bought 2,000 shares at $1.03 ($2K), reported as a purchase (code P). Holdings up 1% to 364,871 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 23, 2026 |
| Sep 15, 2026 | Purchase (code P) | Patricia A. Bradford (Director) bought 12,000 shares at $1.03 ($12K), reported as a purchase (code P). Holdings up 26% to 57,651 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 16, 2026 |
| Aug 19, 2026 | Purchase (code P) | Ronald Todd Plott (Director) bought 15,000 shares at $1.14 ($17K), reported as a purchase (code P). New position of 15,000 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 20, 2026 |
| Aug 18, 2026 | Purchase (code P) | Robert J Bitterman (CEO and Director) bought 10,000 shares at $1.06 ($11K), reported as a purchase (code P). Holdings up 2% to 431,421 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 19, 2026 |
| Jun 26, 2026 | Purchase (code P) | Robert J Bitterman (CEO and Director) bought 10,000 shares at $0.9900 ($10K), reported as a purchase (code P). Holdings up 2% to 421,421 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 29, 2026 |
| Dec 31, 2025 | Purchase (code P) | Robert J Bitterman (CEO and Director) bought 5,000 shares at $1.03 ($5K), reported as a purchase (code P). Holdings up 2% to 291,421 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jan 2, 2026 |
| Dec 23, 2025 | Purchase (code P) | Robert J Bitterman (CEO and Director) bought 5,000 shares at $1.02 ($5K), reported as a purchase (code P). Holdings up 2% to 286,421 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 29, 2025 |
| Nov 21, 2025 | Purchase (code P) | Robert J Bitterman (CEO and Director) bought 5,000 shares at $1.14 ($6K), reported as a purchase (code P). Holdings up 2% to 281,421 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 24, 2025 |
| Nov 18, 2025 | Purchase (code P) | Robert J Bitterman (CEO and Director) bought 5,000 shares at $1.27 ($6K), reported as a purchase (code P). Holdings up 2% to 276,421 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 19, 2025 |
11 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
3 insiders bought in 30 days
$50K in purchases since Aug 18, 2026 · Purchases traded Aug 18, 2026 to Sep 29, 2026 · Closed
| Insider | Value | Traded | Source |
|---|---|---|---|
| Robert J Bitterman (CEO) | $11K | Aug 18, 2026 | SEC filing |
| Ronald Todd Plott (Director) | $17K | Aug 19, 2026 | SEC filing |
| Patricia A. Bradford (Director) | $12K | Sep 15, 2026 | SEC filing |
| Ronald Todd Plott (Director) | $10K | Sep 29, 2026 | SEC filing |
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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