Latest filing published 18 Feb 2026 for Protagonist Therapeutics, Inc, €1.3M.
Filing timeline
BuySaleInsider track record
Lewis T. Williams: trading record in brief
Lewis T. Williams, listed as senior executive, has filed trades across 4 companies (mainly through SEC (Form 4)), most often in Five Prime Therapeutics Inc, Beckman Coulter Inc and Protagonist Therapeutics, Inc. We count 81 filings; the first trade dates from 2 November 2009 and the latest from 17 February 2026.
No open-market purchase appears, only 32 sales worth €14.6M. Besides market trades, the filings include 22 share grants and 18 option exercises. So far in 2026, the count stands at no purchases and 1 sale.
Most recently, on 18 February 2026, the filings show an open-market sale worth €1.3M in Protagonist Therapeutics, Inc. The median gap between a trade and its publication by SEC (Form 4) is 2 days. Section 16 rules allow two business days to file each Form 4. A sale on its own says little: insiders also sell to pay tax, fund a purchase or diversify. Source: insider filings from SEC (Form 4). Past trades are no guide to future returns.
Companies and markets linked to Lewis T. Williams
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
- 18,000 shares@ US$82.4288.4% of flowCommon StockSEC:0001104659-26-017176:1
- 18,000 shares@ US$10.84100.0% of flowCommon StockSEC:0001104659-26-017176:0
- 2,695 shares0Common StockSEC:0001104659-26-001476:0
- 5,130 shares0Common StockSEC:0001104659-25-001432:0
- 2,095,114 shares0Common StockSEC:0001209191-22-008160:0
- 7,024 shares@ US$5.431.3% of flowCommon StockSEC:0001209191-19-048076:0
- 1,000 shares0Common StockSEC:0001209191-19-014685:0
- 926 shares@ US$11.950.2% of flowCommon StockSEC:0001209191-19-014250:0
- 3,144 shares@ US$11.430.8% of flowCommon StockSEC:0001209191-19-008141:0
- 91,217 shares@ US$4.569.1% of flowCommon StockSEC:0001209191-18-058417:0
- 7,024 shares@ US$14.002.1% of flowCommon StockSEC:0001209191-18-049446:0
- 5,000 shares0Common StockSEC:0001209191-18-014712:0
- 00Common StockSEC:0001209191-18-009449:0
- 32,613 shares@ US$44.74Common StockSEC:0001209191-18-009446:0
- 22,416 shares0Common StockSEC:0001209191-18-009446:1
- 3,137 shares@ US$18.420.3% of flowCommon StockSEC:0001209191-18-008075:0
- 7,827 shares@ US$34.341.6% of flowCommon StockSEC:0001209191-17-051801:0
- 34,532 shares@ US$44.7710.1% of flowCommon StockSEC:0001209191-17-017144:0
- 22,416 shares0Common StockSEC:0001209191-17-009300:0
- 16,875 shares0Common StockSEC:0001209191-17-009300:1
- 5,065 shares@ US$48.601.6% of flowCommon StockSEC:0001209191-17-001849:0
- 155 shares@ US$4.560.0% of flowCommon StockSEC:0001209191-16-156690:0
- 19 shares@ US$6.890.0% of flowCommon StockSEC:0001209191-16-156690:1
- 10 shares@ US$8.490.0% of flowCommon StockSEC:0001209191-16-156690:2
- 29,816 shares@ US$5.541.1% of flowCommon StockSEC:0001209191-16-156690:3
25 of 81 declarations
