Insiders who reported open-market trades in the last 12 months at the companies William N. Springer files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
Joseph D. Margolis - $1.07M in EXR purchases and sales in the last 12 months
Gwyn Goodson McNeal - $495K in EXR purchases and sales in the last 12 months
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William N. Springer is a corporate insider, tracked as President of Extra Space Storage Inc. (EXR). InsiderAlpha holds 5 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did William N. Springer last file a Form 4?
The most recent primary Form 4 on record is dated 2 July 2026, one of 5 filings going back to 2024.
InsiderAlpha's records for William N. Springer go back to 2024: 5 primary Form 4 filings, an average of 1.7 per year. No recorded transaction carries a Rule 10b5-1 plan flag. An absent flag does not establish whether a transaction was pre-arranged or discretionary.
