1. Corporate Officers - W
2. Williams Lewis T

Insider Trading History of Williams Lewis T

The following table details the insider trading activities (stock purchases, stock sales, and stock option exercises) of Williams Lewis T since 2015. This trader's CIK number is 1475714. At the time of last reporting, Williams Lewis T was the Officer of Protagonist Therapeutics, Inc. (stock ticker symbol PTGX). Also see all insider trading activities at Protagonist Therapeutics, Inc.

Note that in the past Williams Lewis T also reported insider trading activities as an insider of the following companies:

Yearly summary of insider trading at Protagonist Therapeutics, Inc (PTGX) by Williams Lewis T

		Insider Buying		Insider Sales		Option Exercises
Year	Symbol	Shares	Value	Shares	Value	Shares	Value
2026	PTGX	0	$0	18,000	$1,483,560	18,000	$195,120

Yearly summary of insider trading at Five Prime Therapeutics, Inc. (FPRX) by Williams Lewis T

		Insider Buying		Insider Sales		Option Exercises
Year	Symbol	Shares	Value	Shares	Value	Shares	Value
2018	FPRX	0	$0	0	$0	91,217	$415,949
2016	FPRX	0	$0	253,349	$10,526,009	334,649	$1,832,970
2015	FPRX	0	$0	150,000	$3,878,666	0	$0

Insider trading activities at 2 companies by Williams Lewis T:

1. Protagonist Therapeutics, Inc (PTGX)

2. Five Prime Therapeutics, Inc. (FPRX)

Table 1. Insider trading of Protagonist Therapeutics, Inc (PTGX) by Williams Lewis T

Trade Date	Symbol	Trade Type	Shares	Price ($)	Value ($)
2026-02-17	PTGX	Option Ex	18,000	10.84	195,120
2026-02-17	PTGX	Sale	18,000	82.42	1,483,560

Table 2. Insider trading of Five Prime Therapeutics, Inc. (FPRX) by Williams Lewis T

Trade Date	Symbol	Trade Type	Shares	Price ($)	Value ($)
2018-11-05	FPRX	Option Ex	91,217	4.56	415,949
2016-12-23	FPRX	Option Ex	30,000	6.37	191,100
2016-12-23	FPRX	Sale	30,000	50.76	1,522,650
2016-05-06	FPRX	Option Ex	81,300	1.23	99,999
2016-04-21	FPRX	Sale	48,121	48.05	2,312,214
2016-04-20	FPRX	Sale	550	48.00	26,400
2016-04-21	FPRX	Option Ex	48,121	8.49	408,547
2016-04-20	FPRX	Option Ex	550	8.49	4,669
2016-04-15	FPRX	Option Ex	1,405	8.49	11,928
2016-04-15	FPRX	Sale	1,405	48.00	67,440
2016-04-14	FPRX	Option Ex	2,725	8.49	23,135
2016-04-14	FPRX	Sale	2,725	48.00	130,800
2016-04-05	FPRX	Option Ex	25,949	8.49	220,307
2016-04-06	FPRX	Option Ex	26,852	8.49	227,973
2016-04-05	FPRX	Sale	25,949	43.00	1,115,807
2016-04-06	FPRX	Sale	26,852	43.17	1,159,200
2016-03-29	FPRX	Option Ex	9,215	6.89	63,491
2016-03-30	FPRX	Option Ex	14,044	6.89	96,763
2016-03-29	FPRX	Sale	9,215	40.01	368,692
2016-03-30	FPRX	Sale	14,044	40.02	562,040
2016-03-02	FPRX	Sale	23,259	36.01	837,556
2016-03-02	FPRX	Option Ex	23,259	6.89	160,254
2016-02-04	FPRX	Option Ex	71,229	4.56	324,804
2016-02-04	FPRX	Sale	71,229	34.02	2,423,210
2015-10-15	FPRX	Sale	72,352	27.40	1,982,444
2015-09-21	FPRX	Sale	2,648	22.06	58,422
2015-06-22	FPRX	Sale	75,000	24.50	1,837,800

Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Williams Lewis T (Officer of Protagonist Therapeutics, Inc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.

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