Hall William K
SEC-identified person · CIK 1181855 Identifier-verified
Public-company roles (from insider filings)
| Company | Capacity as filed | Filings |
|---|---|---|
| Signature Group Holdings, INC. SGRH | Director | filed 2015–2017 |
| W.W. Grainger, INC. GWW | Director | filed 2006–2016 |
| Stericycle INC SRCL | Director | filed 2006–2015 |
| Enerpac Tool Group Corp EPAC | Director | filed 2006–2014 |
| Castle A M & CO CTAM | Director | filed 2006–2010 |
| Great Plains Energy INC GXP | Director | filed 2006–2008 |
All roles under one Commission-assigned identifier - the same person by the SEC's own record, not by name matching. From the SEC's insider-transaction filings (Forms 3, 4 and 5). Every reporting director and officer carries a Commission-assigned identifier (CIK), so these footprints are identifier-verified - no name matching involved. Insiders file when they transact, so dates are filing dates: "last filed" never means "served until". This layer is not yet joined to the nonprofit register - identity joins ship only after independent review.