Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-19 · Built: 2026-10-19 · 中文

← United States · Coverage record

US · SEC FORM 4

Protagonist Therapeutics, Inc

PTGX · Nasdaq · CIK 0001377121 · Healthcare · Biotechnology

INSIDER SIGNAL

No active buy signal

0 qualifying P purchase groups
in the current 180-day scoring window

35 Form 4 transaction lines observed in the same window
16 sales · 19 option, withholding, award, gift or other lines

Last qualifying purchase2020-03-12 · SELICK HAROLD E · $80.4K

WHY NO ACTIVE SIGNAL?

Purchase activityNone
Recent buyingNone
Recent salesHigh
Buy signal statusInactive
Score anatomy

No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.

ClusterNot calculated
Purchase sizeNot calculated
RoleNot calculated
RecencyNot calculated
ConvictionNot calculated

Why is there no score?

  • No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
  • Sales and other Form 4 activity remain visible as context and do not create a negative score.

Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.

Purchase breadth, concentration & cluster buying

These modules activate when qualifying purchases enter the 180-day research window.

Insider activity timeline

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

AprMayJunJulAugSepOct
PATEL DINESH V PH DPresident and CEO
○○○▼▼○▼○▼○○▼○▼○▼
Waddill William D.Director
○▼○▼○▼
Giraudo BryanDirector
○▼▼
Ali AsifChief Financial Officer
○▼
● Purchase▼ Sale○ Other

—

SIGNAL HISTORY

No recorded active-signal snapshot

Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2020-03-12 · SELICK HAROLD E.

Recent Form 4 activity

0Purchases
37Sales
47Other Form 4 lines
35SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING16 sale line(s) · context only
OTHER19 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDNot assessed

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 has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.

Short interest

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

Shares short
9,345,382
Previous report
8,140,194
Avg daily volume
813,300
Days to cover
11.5

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
2020-03-12SELICK HAROLD EPurchase (P)Common Stock12,000USD 6.70USD 80,400SEC filing ↗

Form 4 evidence

84 transaction lines in the latest 365-day window; 239 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-30Ali AsifSale (S)Common Stock58,629USD 141.78USD 8,312,294SEC filing ↗
2026-09-30Ali AsifOption exercise / conversion (M)Common Stock58,629USD 23.72USD 1,390,735SEC filing ↗
2026-09-10PATEL DINESH V PH DSale (S)Common Stock7,278USD 144.10USD 1,048,760SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-30Ali AsifSale (S)Common Stock58,629USD 141.78USD 8,312,294SEC filing ↗
2026-09-30Ali AsifOption exercise / conversion (M)Common Stock58,629USD 23.72USD 1,390,735SEC filing ↗
2026-09-10PATEL DINESH V PH DSale (S)Common Stock7,278USD 144.10USD 1,048,760SEC filing ↗
2026-09-10PATEL DINESH V PH DOption exercise / conversion (M)Common Stock7,278USD 21.58USD 157,059SEC filing ↗
2026-09-09PATEL DINESH V PH DSale (S)Common Stock63,548USD 146.18USD 9,289,447SEC filing ↗
2026-09-09PATEL DINESH V PH DOption exercise / conversion (M)Common Stock63,548USD 21.58USD 1,371,366SEC filing ↗
2026-09-08PATEL DINESH V PH DSale (S)Common Stock54,174USD 145.87USD 7,902,361SEC filing ↗
2026-09-08PATEL DINESH V PH DOption exercise / conversion (M)Common Stock54,174USD 21.58USD 1,169,075SEC filing ↗
2026-09-03PATEL DINESH V PH DGift (G)Common Stock510USD 0.00USD 0SEC filing ↗
2026-08-11PATEL DINESH V PH DSale (S)Common Stock34,239USD 148.52USD 5,085,176SEC filing ↗
2026-08-11PATEL DINESH V PH DOption exercise / conversion (M)Common Stock34,239USD 21.58USD 738,878SEC filing ↗
2026-08-10PATEL DINESH V PH DSale (S)Common Stock65,761USD 149.11USD 9,805,623SEC filing ↗
2026-08-10PATEL DINESH V PH DOption exercise / conversion (M)Common Stock65,761USD 21.58USD 1,419,122SEC filing ↗
2026-06-23Waddill William D.Sale (S)Common Stock9,000USD 117.94USD 1,061,460SEC filing ↗
2026-06-23Waddill William D.Option exercise / conversion (M)Common Stock9,000USD 16.54USD 148,860SEC filing ↗
2026-06-10Waddill William D.Sale (S)Common Stock9,000USD 107.68USD 969,120SEC filing ↗
2026-06-10Waddill William D.Option exercise / conversion (M)Common Stock9,000USD 14.96USD 134,640SEC filing ↗
2026-05-29Waddill William D.Sale (S)Common Stock9,000USD 99.64USD 896,760SEC filing ↗
2026-05-29Waddill William D.Option exercise / conversion (M)Common Stock9,000USD 11.80USD 106,200SEC filing ↗
2026-05-12PATEL DINESH V PH DSale (S)Common Stock75,000USD 100.12USD 7,509,000SEC filing ↗
2026-05-12PATEL DINESH V PH DOption exercise / conversion (M)Common Stock75,000USD 21.58USD 1,618,500SEC filing ↗
2026-05-12PATEL DINESH V PH DSale (S)Common Stock75,000USD 100.12USD 7,509,000SEC filing ↗
2026-05-12PATEL DINESH V PH DOption exercise / conversion (M)Common Stock75,000USD 21.58USD 1,618,500SEC filing ↗
2026-05-08Giraudo BryanSale (S)Common Stock11,130USD 100.00USD 1,113,000SEC filing ↗
2026-05-07Giraudo BryanSale (S)Common Stock48,000USD 100.12USD 4,805,880SEC filing ↗
2026-05-07Giraudo BryanOption exercise / conversion (M)Common Stock36,000USD 6.63USD 238,560SEC filing ↗
2026-04-23PATEL DINESH V PH DGift (G)Common Stock1,460USD 0.00USD 0SEC filing ↗
2026-04-20Ali AsifSale (S)Common Stock1,750USD 105.47USD 184,572SEC filing ↗
2026-03-26SELICK HAROLD ESale (S)Common Stock24,000USD 105.00USD 2,520,000SEC filing ↗
2026-03-26SELICK HAROLD EOption exercise / conversion (M)Common Stock24,000USD 12.88USD 309,120SEC 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 date2026-10-19
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerPTGX
CIK0001377121
SectorHealthcare
IndustryBiotechnology Yahoo Finance
SEC SIC2834 Pharmaceutical Preparations
ExchangeNasdaq

Data coverage

Local Form 4 history239 transaction lines from 2020-03-12 to 2026-09-30
1 P purchase lines · 88 S sale lines · 150 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-19. Mapping status is an audit field and does not erase SEC filing evidence.