Summary
Updated Aug 30, 2026
Stephen D. O'Brien is SVP; Pres & General Mngr NAWH of SMITH A O CORP (AOS). 2 SEC Form 4 filings on record, most recently on 17 February 2026.
Recent Transactions
3Every recent SEC Form 4 transaction Stephen D. O'Brien has reported, most recent first.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Stephen D. O'Brien 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.
- Darrell W. Schuh - $111K of AOS open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Stephen D. O'Brien?
Stephen D. O'Brien is a corporate insider, tracked as SVP; Pres & General Mngr NAWH of SMITH A O CORP (AOS). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
When did Stephen D. O'Brien last file a Form 4?
The most recent primary Form 4 on record is dated 17 February 2026, one of 2 filings going back to 2026.
Where can I see all of Stephen D. O'Brien's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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