Latest filing published 19 Aug 2026 for NPK International Inc., €25k.
Not enough buy signals with a settled T+90 horizon to measure a track record yet.
Filings by Michael A. Lewis span 3 companies, the busiest being NPK International Inc., Portland General Electric Co /OR/ and PG&E Corp. Between 1 August 2019 and 17 August 2026, the trades on record add up to 23 filings.
On the open market, the record shows 1 purchase worth €20k and 7 sales worth €239k. On balance, insiders were net sellers of €219k. Open-market purchases are the filings investors watch most closely, because the insider pays for the shares out of pocket. Besides market trades, the filings include 15 share grants. Since January 2026: no purchases and 3 sales on the market.
Most recently, on 19 August 2026, the filings show an open-market sale worth €25k in NPK International Inc. The last purchase on record was published on 12 December 2022, which is 1,411 days ago. The median gap between a trade and its publication by SEC (Form 4) is 2 days. US insiders must file a Form 4 within two business days of a trade. Keep in mind that insiders sell for many reasons unrelated to the outlook, from tax bills to estate planning. This summary is built from SEC (Form 4) disclosures alone and does not predict where the share price will go.
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
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