Summary
Updated Aug 31, 2026
Donald Arthur Seibel Jr. is Director of ACNB CORP (ACNB). 5 SEC Form 4 filings on record going back to 2024, most recently on 7 August 2026. Most recent open-market trade: sold $97K of ACNB on 7 August 2026. Lifetime open-market sales: $97K.
Recent Transactions
5Every recent SEC Form 4 transaction Donald Arthur Seibel Jr. has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Donald Arthur Seibel Jr. go back to 2024: 5 primary Form 4 filings, an average of 1.7 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Donald Arthur Seibel Jr. 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.
- Brett D. Fulk - $72K of ACNB open-market activity in the last 12 months
- Kevin J. Hayes - $38K of ACNB open-market activity in the last 12 months
- Scott L. Kelley - $16K of ACNB open-market activity in the last 12 months
- James J. Lott - $11K of ACNB open-market activity in the last 12 months
- Frank Elsner III - $508 of ACNB 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 Donald Arthur Seibel Jr.?
Donald Arthur Seibel Jr. is a corporate insider, tracked as Director of ACNB CORP (ACNB). InsiderAlpha holds 5 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Donald Arthur Seibel Jr. submitted recently?
2 primary Form 4 filings in the last 90 days, covering 1 company.
Has Donald Arthur Seibel Jr. been buying or selling stock?
Recorded transactions: 0 open-market purchases and 1 open-market sale ($97K) across all tracked filings.
Where can I see all of Donald Arthur Seibel Jr.'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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