Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-18 · Built: 2026-10-18 · 中文

← United States · Coverage record

US · SEC FORM 4

Phio Pharmaceuticals Corp.

PHIO · Nasdaq · CIK 0001533040 · Healthcare · Biotechnology

INSIDER SIGNAL

57.5 / 100

3 buyers · 8 purchase transaction lines · $68.9K gross purchase

WHY THIS SIGNAL?

Buyer breadthModerate
Purchase sizeLow
RoleModerate
RecencyModerate
ConvictionStrong
Score anatomy

Each bar shows the contribution to the current score; the weights and formula stay unchanged.

Cluster+21.0 / 35
Purchase size+6.2 / 25
Role+13.0 / 20
Recency+7.3 / 10
Conviction+10.0 / 10

What is holding the score back?

  • ⚠ Cluster breadth is moderate · 3 insider(s), not 4+
  • ⚠ Purchase size is modest relative to the model scale
  • ⚠ Role scores low · most senior buyer: Chairman, Pres. & CEO (CEO, chair and 10% owners score lowest)
  • ✓ Recent activity · latest purchase 2026-09-29

Purchase-size comments are relative to the model scale. Average daily volume is a separate market-context diagnostic.

US-v1.2 ranks qualifying equity purchases under the current 180-day rules. The score is a research priority, not a return forecast or probability. Backtests have not shown that a higher US score is followed by better returns.

Insider activity timeline

Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.

AprMayJunJulAugSepOct
Bitterman Robert JChairman, Pres. & CEO
●●○●○
Plott Ronald ToddDirector
●○●●
Carson Lisa CabottChief Financial Officer
○○
BRADFORD PATRICIA ADirector
●●
● Purchase▼ Sale○ Other

—

Purchase breadth & concentration

QUALIFYING BUYERS3
PURCHASE CONCENTRATION40%Largest buyer: Plott Ronald Todd · $27.4K
CLUSTER BUYING · 15D3 insidersPeak activity: 2026-09-15–2026-09-29

Roles in the peak window: Chairman, Pres. & CEO, Director. Concentration uses priced qualifying P lines only and does not change the saved score.

SIGNAL HISTORY

57.5 / 100

Latest recorded score

↓ -0.3 ptsversus the previous recorded snapshot
  1. 58.3
  2. 58.1
  3. 57.9
  4. 57.8
  5. 57.5

Only scores saved when a full US scoring run completed are shown; gaps are not reconstructed.

Recent Form 4 activity

12Purchases
0Sales
11Other Form 4 lines
22SEC filings · 365 days
BUYING8 qualifying P line(s) · 180 days
SELLING0 sale line(s) · context only
OTHER5 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDUnavailable

P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.

Market context

Market context provides additional background on recent price performance and risk. It does not affect the Insider Signal.

Price performance

1M
-3.0%
3M
-3.9%
6M
-23.1%
12M
-57.6%

Volatility & liquidity

Volatility
232.2%
Beta
0.80
Avg daily value
USD 594,943

Valuation

Market cap
USD 11.5M
P/E
—

Fundamentals

Profit margin
0.0%
ROE
-43.2%
Industry
Biotechnology

Market data

Price data up to: 2026-10-07 · Price source: OpenBB/yfinance · From SEC filings: ROE · Fiscal year ended: 2025-12-31 · From Yahoo Finance: Market cap, Profit margin · Status: PASS

Short interest

Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.

Shares short
89,454
Previous report
149,890
Avg daily volume
114,595
Days to cover
≤ 1.0

FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.

Historical equity purchases

Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.

Transaction dateReporting ownerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-29Plott Ronald ToddPurchase (P)Common Stock, $.0001 par value5,000USD 1.04USD 5,200SEC filing ↗
2026-09-28Plott Ronald ToddPurchase (P)Common Stock, $.0001 par value5,000USD 1.03USD 5,150SEC filing ↗
2026-09-24BRADFORD PATRICIA APurchase (P)Common Stock, $.0001 par value6,500USD 1.01USD 6,565SEC filing ↗
2026-09-22Bitterman Robert JPurchase (P)Common Stock, $.0001 par value2,000USD 1.03USD 2,060SEC filing ↗
2026-09-15BRADFORD PATRICIA APurchase (P)Common Stock, $.0001 par value12,000USD 1.03USD 12,360SEC filing ↗
2026-08-19Plott Ronald ToddPurchase (P)Common Stock, $.0001 par value15,000USD 1.14USD 17,100SEC filing ↗
2026-08-18Bitterman Robert JPurchase (P)Common Stock, $.0001 par value10,000USD 1.06USD 10,600SEC filing ↗
2026-06-26Bitterman Robert JPurchase (P)Common Stock, $.0001 par value10,000USD 0.99USD 9,900SEC filing ↗
2025-12-31Bitterman Robert JPurchase (P)Common Stock, $.0001 par value5,000USD 1.03USD 5,150SEC filing ↗
2025-12-23Bitterman Robert JPurchase (P)Common Stock, $.0001 par value5,000USD 1.02USD 5,100SEC filing ↗
2025-11-21Bitterman Robert JPurchase (P)Common Stock, $.0001 par value5,000USD 1.14USD 5,700SEC filing ↗
2025-11-18Bitterman Robert JPurchase (P)Common Stock, $.0001 par value5,000USD 1.27USD 6,350SEC filing ↗
2025-06-10Ferrara Robert LPurchase (P)Common stock, $0.0001 par value2,500USD 2.42USD 6,050SEC filing ↗
2025-06-10Bitterman Robert JPurchase (P)Common Stock, $0.0001 par value2,000USD 2.42USD 4,840SEC filing ↗
2025-06-09Bitterman Robert JPurchase (P)Common Stock, $0.0001 par value1,500USD 2.75USD 4,125SEC filing ↗

Form 4 evidence

23 transaction lines in the latest 365-day window; 99 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-29Plott Ronald ToddPurchase (P)Common Stock, $.0001 par value5,000USD 1.04USD 5,200SEC filing ↗
2026-09-28Plott Ronald ToddPurchase (P)Common Stock, $.0001 par value5,000USD 1.03USD 5,150SEC filing ↗
2026-09-28Plott Ronald ToddAward / grant (A)Common Stock, $.0001 par value17,000USD 0.00USD 0SEC filing ↗
Show recent Form 4 evidence (23 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-29Plott Ronald ToddPurchase (P)Common Stock, $.0001 par value5,000USD 1.04USD 5,200SEC filing ↗
2026-09-28Plott Ronald ToddPurchase (P)Common Stock, $.0001 par value5,000USD 1.03USD 5,150SEC filing ↗
2026-09-28Plott Ronald ToddAward / grant (A)Common Stock, $.0001 par value17,000USD 0.00USD 0SEC filing ↗
2026-09-28Carson Lisa CabottAward / grant (A)Common Stock, $.0001 par value108,000USD 0.00USD 0SEC filing ↗
2026-09-28Bitterman Robert JAward / grant (A)Common Stock, $.0001 par value400,000USD 0.00USD 0SEC filing ↗
2026-09-24BRADFORD PATRICIA APurchase (P)Common Stock, $.0001 par value6,500USD 1.01USD 6,565SEC filing ↗
2026-09-22Bitterman Robert JPurchase (P)Common Stock, $.0001 par value2,000USD 1.03USD 2,060SEC filing ↗
2026-09-15BRADFORD PATRICIA APurchase (P)Common Stock, $.0001 par value12,000USD 1.03USD 12,360SEC filing ↗
2026-09-11Carson Lisa CabottTax withholding (F)Common Stock, $.0001 par value12,888USD 1.03USD 13,275SEC filing ↗
2026-09-11Bitterman Robert JTax withholding (F)Common Stock, $.0001 par value68,550USD 1.03USD 70,606SEC filing ↗
2026-08-19Plott Ronald ToddPurchase (P)Common Stock, $.0001 par value15,000USD 1.14USD 17,100SEC filing ↗
2026-08-18Bitterman Robert JPurchase (P)Common Stock, $.0001 par value10,000USD 1.06USD 10,600SEC filing ↗
2026-06-26Bitterman Robert JPurchase (P)Common Stock, $.0001 par value10,000USD 0.99USD 9,900SEC filing ↗
2026-02-05Lockshin CurtisAward / grant (A)Common Stock, $.0001 par value16,600USD 0.00USD 0SEC filing ↗
2026-02-05Freeman Jonathan EAward / grant (A)Common Stock, $.0001 par value16,600USD 0.00USD 0SEC filing ↗
2026-02-05Deming David HAward / grant (A)Common Stock, $.0001 par value23,800USD 0.00USD 0SEC filing ↗
2026-02-05Carson Lisa CabottAward / grant (A)Common Stock, $.0001 par value47,000USD 0.00USD 0SEC filing ↗
2026-02-05Bitterman Robert JAward / grant (A)Common Stock, $.0001 par value120,000USD 0.00USD 0SEC filing ↗
2026-02-05BRADFORD PATRICIA AAward / grant (A)Common Stock, $.0001 par value18,500USD 0.00USD 0SEC filing ↗
2025-12-31Bitterman Robert JPurchase (P)Common Stock, $.0001 par value5,000USD 1.03USD 5,150SEC filing ↗
2025-12-23Bitterman Robert JPurchase (P)Common Stock, $.0001 par value5,000USD 1.02USD 5,100SEC filing ↗
2025-11-21Bitterman Robert JPurchase (P)Common Stock, $.0001 par value5,000USD 1.14USD 5,700SEC filing ↗
2025-11-18Bitterman Robert JPurchase (P)Common Stock, $.0001 par value5,000USD 1.27USD 6,350SEC filing ↗

Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.

Snapshot & identity

Snapshot date2026-10-18
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerPHIO
CIK0001533040
SectorHealthcare
IndustryBiotechnology Yahoo Finance
SEC SIC2834 Pharmaceutical Preparations
ExchangeNasdaq

Data coverage

Local Form 4 history99 transaction lines from 2020-03-01 to 2026-09-29
37 P purchase lines · 0 S sale lines · 62 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.