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Last Close
May 13  •  04:00PM ET
103.88
Dollar change
+3.93
Percentage change
3.93
%
Index
RUT
P/E
-
EPS (ttm)
-1.80
Insider Own
5.79%
Shs Outstand
64.23M
Perf Week
-0.09%
Market Cap
6.68B
Forward P/E
-
EPS next Y
-1.07
Insider Trans
-11.11%
Shs Float
60.59M
Perf Month
-0.80%
Enterprise Value
6.14B
PEG
-
EPS next Q
2.43
Inst Own
109.52%
Perf Quarter
24.42%
Income
-114.71M
P/S
90.21
EPS this Y
293.62%
Inst Trans
3.34%
Perf Half Y
24.81%
Sales
74.06M
P/B
10.18
EPS next Y
-126.84%
ROA
-15.94%
Perf YTD
18.94%
Book/sh
10.21
P/C
12.20
EPS next 5Y
-
ROE
-17.06%
52W High
107.84 -3.67%
Perf Year
134.65%
Cash/sh
8.52
P/FCF
-
EPS past 3/5Y
7.63% -1.26%
ROIC
-17.30%
52W Low
43.20 140.46%
Perf 3Y
309.46%
Dividend Est.
-
EV/EBITDA
-
Sales past 3/5Y
20.07% 9.96%
Gross Margin
98.04%
Volatility
5.27% 4.08%
Perf 5Y
258.21%
Dividend TTM
-
EV/Sales
82.94
EPS Y/Y TTM
-302.09%
Oper. Margin
-192.36%
ATR (14)
4.52
Perf 10Y
-
Dividend Ex-Date
-
Quick Ratio
17.76
Sales Y/Y TTM
-64.36%
Profit Margin
-154.88%
RSI (14)
54.79
Dividend Gr. 3/5Y
- -
Current Ratio
17.76
EPS Q/Q
129.01%
SMA20
2.19%
Beta
1.88
Payout
-
Debt/Eq
0.01
Sales Q/Q
99.03%
SMA50
3.52%
Rel Volume
0.69
Prev Close
99.95
Employees
132
LT Debt/Eq
0.01
SMA200
27.31%
Avg Volume
753.38K
Price
103.88
IPO
Aug 11, 2016
Option/Short
Yes / Yes
Trades
Volume
518,147
Change
3.93%
Date Action Analyst Rating Change Price Target Change
Sep-17-25Initiated Barclays Overweight $72
Sep-12-25Initiated Leerink Partners Outperform $73
Jun-17-25Initiated Citigroup Buy $72
Dec-06-24Initiated Goldman Neutral $47
Dec-06-24Initiated BMO Capital Markets Outperform $62
Nov-05-24Initiated Wedbush Outperform $58
Sep-24-24Initiated TD Cowen Buy $65
Sep-09-24Initiated Truist Buy $60
Oct-30-23Initiated CapitalOne Overweight $32
May-25-23Resumed Jefferies Buy $30 → $40
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Protagonist Therapeutics, Inc. a clinical-stage biopharmaceutical company, which engages in discovering and developing peptide-based therapeutic drugs to address unmet medical needs. Its product pipeline includes PTG-300, PTG-200, and PN-943. The company was founded by Mark L. Smythe on August 22, 2006 and is headquartered in Newark, CA.
Insider Trading Relationship Date Transaction Cost #Shares Value ($) #Shares Total SEC Form 4
PATEL DINESH V PH DPresident and CEOMay 12 '26Option Exercise21.5875,0001,618,500598,478May 12 07:28 PM
PATEL DINESH V PH DPresident and CEOMay 12 '26Sale100.1275,0007,509,000523,478May 12 07:28 PM
Dinesh PatelCEOMay 12 '26Proposed Sale103.5075,0007,762,500May 12 05:29 PM
Giraudo BryanDirectorMay 07 '26Option Exercise6.6336,000238,56043,825May 11 08:25 PM
Giraudo BryanDirectorMay 07 '26Sale100.1436,0003,605,04027,825May 11 08:25 PM
Giraudo BryanDirectorMay 07 '26Sale100.0712,0001,200,8406,000May 11 08:25 PM
Giraudo BryanDirectorMay 08 '26Sale100.006,000600,0000May 11 08:25 PM
Giraudo BryanDirectorMay 08 '26Sale100.005,130513,00012,695May 11 08:25 PM
BRYAN M & COURTNEY L GIRAUDO DirectorMay 08 '26Proposed Sale100.0011,1301,113,000May 08 04:23 PM
BRYAN GIRAUDODirectorMay 07 '26Proposed Sale100.1436,0003,604,968May 07 05:21 PM
BRYAN M & COURTNEY L GIRAUDO DirectorMay 07 '26Proposed Sale100.0712,0001,200,874May 07 04:49 PM
Ali AsifChief Financial OfficerApr 20 '26Sale105.471,750184,57259,003Apr 21 04:58 PM
Asif AliOfficerApr 20 '26Proposed Sale105.471,750184,572Apr 21 04:57 PM
MOLINA ARTURO MDChief Medical OfficerMar 26 '26Option Exercise8.0415,000120,60099,115Mar 27 07:36 PM
MOLINA ARTURO MDChief Medical OfficerMar 26 '26Sale104.7915,0001,571,85084,115Mar 27 07:36 PM
SELICK HAROLD EDirectorMar 26 '26Option Exercise12.8824,000309,12084,845Mar 27 07:34 PM
SELICK HAROLD EDirectorMar 26 '26Sale105.0024,0002,520,00060,845Mar 27 07:34 PM
Ali AsifChief Financial OfficerMar 26 '26Option Exercise17.7024,765438,28085,518Mar 27 07:33 PM
Ali AsifChief Financial OfficerMar 26 '26Sale104.2424,7652,581,50460,753Mar 27 07:33 PM
HAROLD SELICKDirectorMar 26 '26Proposed Sale105.0024,0002,520,000Mar 26 04:05 PM
ASIF ALIOfficerMar 26 '26Proposed Sale104.2424,7652,581,546Mar 26 04:05 PM
ARTURO MOLINAOfficerMar 26 '26Proposed Sale104.7915,0001,571,919Mar 26 04:01 PM
PATEL DINESH V PH DPresident and CEOMar 25 '26Option Exercise8.5854,641468,820579,579Mar 25 07:23 PM
PATEL DINESH V PH DPresident and CEOMar 24 '26Option Exercise8.5859506524,997Mar 25 07:23 PM
PATEL DINESH V PH DPresident and CEOMar 25 '26Sale101.0054,6415,518,741524,938Mar 25 07:23 PM
PATEL DINESH V PH DPresident and CEOMar 24 '26Sale101.00595,959524,938Mar 25 07:23 PM
Dinesh PatelCEOMar 24 '26Proposed Sale98.5454,7005,390,138Mar 24 05:56 PM
Williams Lewis TDirectorFeb 17 '26Option Exercise10.8418,000195,12025,825Feb 18 06:12 PM
Williams Lewis TDirectorFeb 17 '26Sale82.4218,0001,483,5607,825Feb 18 06:12 PM
LEWIS T WILLIAMSDirectorFeb 17 '26Proposed Sale82.4218,0001,483,495Feb 17 05:27 PM
Waddill William D.DirectorFeb 06 '26Option Exercise8.3120,000166,20027,825Feb 06 04:38 PM
Waddill William D.DirectorFeb 06 '26Sale83.6820,0001,673,6007,825Feb 06 04:38 PM
WILLIAM D WADDILLDirectorFeb 06 '26Proposed Sale83.6820,0001,673,672Feb 06 04:04 PM
PATEL DINESH V PH DPresident and CEOJan 26 '26Option Exercise14.1224,890351,528588,710Jan 27 09:21 PM
PATEL DINESH V PH DPresident and CEOJan 27 '26Option Exercise21.584,06887,787578,573Jan 27 09:21 PM
PATEL DINESH V PH DPresident and CEOJan 23 '26Option Exercise4.2119,31581,316593,820Jan 27 09:21 PM
PATEL DINESH V PH DPresident and CEOJan 26 '26Sale84.0324,8902,091,470574,505Jan 27 09:21 PM
PATEL DINESH V PH DPresident and CEOJan 23 '26Sale84.5919,3151,633,856574,505Jan 27 09:21 PM
PATEL DINESH V PH DPresident and CEOJan 27 '26Sale83.194,068338,417574,505Jan 27 09:21 PM
Ali AsifChief Financial OfficerJan 27 '26Option Exercise16.1828,000453,080106,523Jan 27 09:20 PM
Ali AsifChief Financial OfficerJan 27 '26Sale83.1346,2033,841,03760,320Jan 27 09:20 PM
MOLINA ARTURO MDChief Medical OfficerJan 27 '26Option Exercise8.045,00040,20089,115Jan 27 09:19 PM
MOLINA ARTURO MDChief Medical OfficerJan 26 '26Option Exercise8.045,00040,20089,115Jan 27 09:19 PM
MOLINA ARTURO MDChief Medical OfficerJan 23 '26Sale82.4213,1511,083,90584,115Jan 27 09:19 PM
MOLINA ARTURO MDChief Medical OfficerJan 26 '26Sale82.285,000411,40084,115Jan 27 09:19 PM
MOLINA ARTURO MDChief Medical OfficerJan 27 '26Sale82.005,000410,00084,115Jan 27 09:19 PM
ASIF ALIOfficerJan 27 '26Proposed Sale83.1446,2033,841,128Jan 27 05:12 PM
ARTURO MOLINAOfficerJan 27 '26Proposed Sale82.005,000410,000Jan 27 04:01 PM
ARTURO MOLINAOfficerJan 26 '26Proposed Sale82.285,000411,396Jan 26 04:29 PM
ARTURO MOLINAOfficerJan 23 '26Proposed Sale83.4213,1511,097,116Jan 23 04:32 PM
Dinesh PatelCEOJan 23 '26Proposed Sale84.62108,2739,162,061Jan 23 04:06 PM
MOLINA ARTURO MDChief Medical OfficerJan 20 '26Sale82.489,514784,71597,266Jan 21 05:17 PM
PATEL DINESH V PH DPresident and CEOJan 20 '26Sale82.4834,4382,840,446580,505Jan 21 05:16 PM
Ali AsifChief Financial OfficerJan 20 '26Sale82.488,588708,33878,077Jan 21 05:15 PM
ARTURO MOLINA MDOfficerJan 20 '26Proposed Sale82.489,514784,715Jan 21 05:12 PM
DINESH V PATEL PH DOfficer, DirectorJan 20 '26Proposed Sale82.4834,4382,840,446Jan 21 05:11 PM
Asif AliOfficerJan 20 '26Proposed Sale82.488,588708,338Jan 21 05:10 PM
SELICK HAROLD EDirectorJan 09 '26Option Exercise4.2114,29960,19960,845Jan 13 04:45 PM
MOLINA ARTURO MDChief Medical OfficerNov 17 '25Sale84.772,712229,89681,180Nov 19 04:01 PM
Waddill William D.DirectorOct 10 '25Option Exercise6.9812,00083,76017,130Oct 14 04:01 PM
Waddill William D.DirectorOct 10 '25Sale81.6212,000979,4805,130Oct 14 04:01 PM
WILLIAM WADDILLDirectorOct 10 '25Proposed Sale67.0412,000804,480Oct 10 04:18 PM
Waddill William D.DirectorSep 22 '25Sale64.254,000257,0005,130Sep 24 08:35 PM
WILLIAM WADDILLDirectorSep 22 '25Proposed Sale62.204,000248,800Sep 22 04:27 PM
Waddill William D.DirectorAug 27 '25Sale59.254,000237,0009,130Aug 29 05:30 PM
WILLIAM WADDILLDirectorAug 27 '25Proposed Sale56.994,000227,960Aug 27 04:33 PM
PATEL DINESH V PH DPresident and CEOJul 25 '25Sale54.7810,415570,534520,603Jul 28 06:08 PM
PATEL DINESH V PH DPresident and CEOJul 22 '25Sale55.0522,0651,214,678548,538Jul 23 06:57 PM
PATEL DINESH V PH DPresident and CEOJul 23 '25Sale54.7917,520959,921531,018Jul 23 06:57 PM
PATEL DINESH V PH DPresident and CEOJul 21 '25Sale54.8612,859705,445570,603Jul 23 06:57 PM
Dinesh PatelCEOJul 22 '25Proposed Sale55.2250,0002,761,000Jul 22 04:04 PM
MOLINA ARTURO MDChief Medical OfficerJun 09 '25Option Exercise8.0410,00080,40093,892Jun 11 05:40 PM
MOLINA ARTURO MDChief Medical OfficerJun 10 '25Option Exercise8.0410,00080,40093,892Jun 11 05:40 PM
MOLINA ARTURO MDChief Medical OfficerJun 10 '25Sale57.0310,000570,30083,892Jun 11 05:40 PM
MOLINA ARTURO MDChief Medical OfficerJun 09 '25Sale55.5110,000555,10083,892Jun 11 05:40 PM
ARTURO MOLINAOfficerJun 10 '25Proposed Sale57.0310,000570,269Jun 10 05:51 PM
ARTURO MOLINAOfficerJun 09 '25Proposed Sale55.5110,000555,077Jun 09 04:46 PM
Last Close
May 13  •  04:00PM ET
0.3436
Dollar change
+0.0030
Percentage change
0.88
%
GOSS Gossamer Bio Inc daily Stock Chart
Index
RUT
P/E
-
EPS (ttm)
-0.75
Insider Own
12.50%
Shs Outstand
233.68M
Perf Week
-1.88%
Market Cap
80.64M
Forward P/E
-
EPS next Y
-0.17
Insider Trans
0.00%
Shs Float
205.35M
Perf Month
-20.39%
Enterprise Value
146.62M
PEG
-
EPS next Q
-0.17
Inst Own
63.22%
Perf Quarter
-85.38%
Income
-170.37M
P/S
1.66
EPS this Y
39.32%
Inst Trans
-3.63%
Perf Half Y
-86.15%
Sales
48.47M
P/B
-
EPS next Y
63.58%
ROA
-69.89%
Perf YTD
-88.92%
Book/sh
-0.53
P/C
0.59
EPS next 5Y
70.85%
ROE
-783.37%
52W High
3.87 -91.12%
Perf Year
-68.48%
Cash/sh
0.58
P/FCF
-
EPS past 3/5Y
34.98% 26.82%
ROIC
-215.09%
52W Low
0.31 9.36%
Perf 3Y
-71.37%
Dividend Est.
-
EV/EBITDA
-
Sales past 3/5Y
- -
Gross Margin
97.93%
Volatility
7.54% 8.57%
Perf 5Y
-95.94%
Dividend TTM
-
EV/Sales
3.03
EPS Y/Y TTM
-199.96%
Oper. Margin
-336.81%
ATR (14)
0.04
Perf 10Y
-
Dividend Ex-Date
-
Quick Ratio
2.64
Sales Y/Y TTM
-57.74%
Profit Margin
-351.49%
RSI (14)
38.50
Dividend Gr. 3/5Y
- -
Current Ratio
2.64
EPS Q/Q
-43.00%
SMA20
-6.09%
Beta
2.14
Payout
-
Debt/Eq
-
Sales Q/Q
47.13%
SMA50
-13.66%
Rel Volume
0.21
Prev Close
0.34
Employees
162
LT Debt/Eq
-
SMA200
-82.88%
Avg Volume
16.12M
Price
0.34
IPO
Feb 08, 2019
Option/Short
Yes / Yes
Trades
Volume
3,316,287
Change
0.88%
Date Action Analyst Rating Change Price Target Change
Mar-23-26Downgrade Cantor Fitzgerald Overweight → Neutral
Feb-24-26Downgrade Wedbush Outperform → Neutral $1
Feb-24-26Downgrade Leerink Partners Outperform → Market Perform $1
Feb-24-26Downgrade Barclays Overweight → Equal Weight $0.30
Jan-28-26Initiated Barclays Overweight $9
Sep-10-25Upgrade UBS Neutral → Buy $9
Jul-14-25Initiated Scotiabank Sector Outperform $11
Jun-25-24Initiated Oppenheimer Outperform $9
Apr-05-24Resumed Wedbush Outperform $4
Jul-27-23Downgrade UBS Buy → Neutral $8 → $1.25
Apr-10-26 07:53AM
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Gossamer Bio, Inc. engages in discovering, acquiring, developing, and commercializing therapeutics in the disease areas of immunology, inflammation, and oncology. Its primary product candidate, GB001, is intended for the treatment of moderate-to-severe eosinophilic asthma and other allergic conditions. The company was founded by Faheem Hasnain and Sheila Gujrathi on October 26, 2015 and is headquartered in San Diego, CA.
Insider Trading Relationship Date Transaction Cost #Shares Value ($) #Shares Total SEC Form 4
Milligan SandraDirectorAug 19 '25Buy1.9226,05050,01658,050Aug 20 04:04 PM