Protagonist Therapeutics, Inc

PTGX
As of the close on Sep 25, 2026
Price
$141.86
Market cap
$9.18B
P/E (diluted TTM)
137.7
EPS (TTM)
$1.03
Four quarters to Jun 30, 2026
Dividend yield
—
Dividend records do not yet cover the latest payments

Figures shown here come from public SEC filings. Dates beside each section show the available history.

How Protagonist Therapeutics, Inc Makes Money

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From revenue to net income

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Source: Protagonist Therapeutics, Inc — 10-Q filed Aug 5, 2026

Financial Summary

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SEC filings supply these figures; updates after the dates shown are not included. This page includes 12 annual periods. The latest annual period ends Dec 31, 2025. The latest insider filing shown is dated Jun 25, 2026. The latest institutional report shown is dated Mar 31, 2026; other ownership filings may exist.

Ownership

Who holds the shares, as reported in SEC ownership filings.

Reported 13F positions

Each row shows what a filer reported for one date, not a current position. The link opens that filing.

Filer Report date Shares Value Filing
ALLIANCEBERNSTEIN L.P. 2026-03-31 73,790 $6.44M SEC filing
NEXTBio Capital Management LP 2026-03-31 229,619 $24.2M SEC filing
BROWN BROTHERS HARRIMAN & CO 2026-03-31 81 $8.54K SEC filing
DecisionPoint Financial, LLC 2026-03-31 4 $422 SEC filing
EXCHANGE TRADED CONCEPTS, LLC 2026-03-31 23,773 $2.51M SEC filing
Creative Planning 2026-03-31 47,971 $5.06M SEC filing
WPG Advisers, LLC 2026-03-31 97 $10.2K SEC filing
AE Wealth Management LLC 2026-03-31 2,888 $304K SEC filing
Moody Aldrich Partners LLC 2026-03-31 53,893 $5.68M SEC filing
Vise Technologies, Inc. 2026-03-31 2,996 $262K SEC filing
MANUFACTURERS LIFE INSURANCE COMPANY, THE 2026-03-31 127,818 $13.5M SEC filing
Eagle Health Investments LP 2026-03-31 179,322 $18.9M SEC filing
Velan Capital Investment Management LP 2026-03-31 3,700 $390K SEC filing
CANADA LIFE ASSURANCE Co 2026-03-31 47,440 Not shown SEC filing
RAYMOND JAMES FINANCIAL INC 2026-03-31 177,361 $17.8M SEC filing
NATIXIS ADVISORS, LLC 2026-03-31 22,638 Not shown SEC filing
Duquesne Family Office LLC 2026-03-31 159,700 Not shown SEC filing
TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY 2026-03-31 26,528 Not shown SEC filing
STATE OF WISCONSIN INVESTMENT BOARD 2026-03-31 30,767 $3.24M SEC filing
INTECH INVESTMENT MANAGEMENT LLC 2026-03-31 13,006 $1.37M SEC filing
  • Each value is checked against Protagonist Therapeutics, Inc's share prices from within about three months of its report date (insiders' Form 4 trades and the latest close).
  • Value not shown for 4 rows: the filed value is about 1,000 times too small for the share count at Protagonist Therapeutics, Inc's share price.

120 filers have only one report here.

Purchases & sales (open market or private)

SecurityCodePriceFiling
2026-06-23Waddill William D. · DirectorCommon StockS — Open market or private sale−9,000117.94SEC filing
2026-06-10Waddill William D. · DirectorCommon StockS — Open market or private sale−9,000107.68SEC filing
2026-05-29Waddill William D. · DirectorCommon StockS — Open market or private sale−9,00099.64SEC filing
2026-05-12 (amended)PATEL DINESH V PH D · President and CEOCommon StockS — Open market or private sale−75,000100.12SEC filing
2026-05-08Giraudo Bryan · DirectorCommon StockS — Open market or private sale−5,130100.00SEC filing
2026-05-08Giraudo Bryan · DirectorCommon StockS — Open market or private sale−6,000100.00SEC filing
2026-05-07Giraudo Bryan · DirectorCommon StockS — Open market or private sale−12,000100.07SEC filing
2026-05-07Giraudo Bryan · DirectorCommon StockS — Open market or private sale−36,000100.14SEC filing

Showing 8 of 10 rows

Grants, exercises, tax & gifts

SecurityCodeFiling
2026-06-23Waddill William D. · DirectorCommon StockM — Exercise or conversion of derivative security+9,000SEC filing
2026-06-23Waddill William D. · DirectorStock Option (right to buy)M — Exercise or conversion of derivative security−9,000SEC filing
2026-06-10Waddill William D. · DirectorStock Option (right to buy)M — Exercise or conversion of derivative security−3,000SEC filing
2026-06-10Waddill William D. · DirectorCommon StockM — Exercise or conversion of derivative security+3,000SEC filing
2026-06-10Waddill William D. · DirectorCommon StockM — Exercise or conversion of derivative security+6,000SEC filing
2026-06-10Waddill William D. · DirectorStock Option (right to buy)M — Exercise or conversion of derivative security−6,000SEC filing
2026-05-29Waddill William D. · DirectorCommon StockM — Exercise or conversion of derivative security+9,000SEC filing
2026-05-29Waddill William D. · DirectorStock Option (right to buy)M — Exercise or conversion of derivative security−9,000SEC filing

Showing 8 of 40 rows

These tables describe filed transactions, not current holdings. Prices are shown as filed; a currency is added only when the filing's data names one. Amended and possible duplicate rows are left out of size comparisons and transaction groups.