Insiders who reported open-market trades in the last 12 months at the companies Mark A. Shaffer 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.
Jaime Mateus-Tique - $6.07M in LQDT purchases and sales in the last 12 months
Jorge Celaya - $2.20M in LQDT purchases and sales in the last 12 months
Mark A. Shaffer is a corporate insider, tracked as Chief Legal Officer & Corp Sec of LIQUIDITY SERVICES INC (LQDT). InsiderAlpha holds 12 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 Mark A. Shaffer submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Mark A. Shaffer been buying or selling stock?
Recorded transactions: 0 open-market purchases and 7 open-market sales ($1.82M) across all tracked filings.
Mark A. Shaffer is Chief Legal Officer & Corp Sec of LIQUIDITY SERVICES INC (LQDT). 12 SEC Form 4 filings on record going back to 2024, most recently on 25 August 2026. Most recent open-market trade: sold $1.54M of LQDT on 26 May 2026. Lifetime open-market sales: $1.82M.
Recent transactions
20
The latest 20 SEC Form 4 transactions reported by Mark A. Shaffer.
InsiderAlpha's records for Mark A. Shaffer go back to 2024: 12 primary Form 4 filings, an average of 4.0 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.
