Summary
Updated Aug 31, 2026
Robert P. Lenk files SEC Form 4 reports at PLUS THERAPEUTICS, INC. (PSTV). 2 SEC Form 4 filings on record, most recently on 25 August 2025. Most recent open-market trade: bought $54K of PSTV on 25 August 2025. Lifetime open-market purchases: $54K.
Recent Transactions
1Every recent SEC Form 4 transaction Robert P. Lenk has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Robert P. Lenk go back to 2025: 2 primary Form 4 filings, an average of 1.0 per year. The typical open-market purchase is $54K (1 buy totaling $54K). The largest single buy on record is $54K of PSTV in 2025. 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 Robert P. Lenk 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.
- Andrew John Hugh Macintyre Sims - $10K of PSTV 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 Robert P. Lenk?
Robert P. Lenk is a corporate insider of PLUS THERAPEUTICS, INC. (PSTV). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Robert P. Lenk last file a Form 4?
The most recent primary Form 4 on record is dated 25 August 2025, one of 2 filings going back to 2025.
Has Robert P. Lenk been buying or selling stock?
Recorded transactions: 1 open-market purchase ($54K) and 0 open-market sales across all tracked filings.
Where can I see all of Robert P. Lenk'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.
Learn More
Follow Robert P. Lenk and every insider like them
A free account opens the full scored daily plan and every past day, a watchlist for any ticker, and 3 months of price history on every company page. No card.
Free plan available · Paid plans start with a 7-day free trial