Form4insider filings, from the source

Insider · CIK 0001396673

Ira M Birns

Files at: STEM, WKC. On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $0 · 0sales $145k · 1net −$145k
$10k$10k$100k$100k$1M$1MbuyssalesFeb 15Feb 15Feb 15Feb 16Feb 16Feb 16Feb 17

Reported trades — common stock

TradeReported (ET)CompanySharesAvg priceTotalOwned afterΔ stakeFlags
Aug 7, 2026 MForm 4 →Aug 11, 9:21 pm EDTSTEM, INC.STEM7,486——14,207—
Mar 15, 2018 AFForm 4 →Mar 19, 7:06 pm EDTWORLD FUEL SERVICES CORPINT5,001$23.93$59,251117,056— plan?
Mar 15, 2017 FForm 4 →Mar 17, 6:31 pm EDTWORLD FUEL SERVICES CORPINT2,940$37.06$108,956117,007— plan?
Mar 15, 2016 FForm 4 →Mar 17, 6:55 pm EDTWORLD FUEL SERVICES CORPINT2,941$48.30$142,050119,947— plan?
Feb 16, 2016 SForm 4 →Feb 18, 6:30 pm ESTWORLD FUEL SERVICES CORPINT3,379$42.93$145,060122,888−2.68% plan?
Mar 15, 2015 AFForm 4 →Mar 17, 8:11 pm EDTWORLD FUEL SERVICES CORPINT58,835$54.10$556,960126,267— plan?

Reported trades — derivatives (options, RSUs, warrants)

TradeReported (ET)CompanySharesAvg priceTotalOwned afterΔ stakeFlags
Aug 7, 2026 MForm 4 →Aug 11, 9:21 pm EDTSTEM, INC.STEM7,486——0—
Jun 3, 2026 AForm 4 →Jun 4, 5:52 pm EDTSTEM, INC.STEM12,168——12,168—
Mar 31, 2015 AForm 4 →Apr 2, 6:30 pm EDTWORLD FUEL SERVICES CORPINT6,000——6,000—