Palantir stock hit by monster insider trading activity

Palantir (NASDAQ: PLTR) shares fell sharply on Thursday amid heightened insider selling activity, with regulatory filings showing that multiple senior executives, including Co-founder and CEO Alex Karp, have proposed significant share disposals. 

PLTR stock closed at $155.74, down 5.85% (-$9.68), and continued its decline in pre-market trading on Friday, changing hands at $154.58 (-0.75%) as of writing.

The timing of the sales occurring just after a strong earnings quarter and during a period of elevated market optimism toward AI-related companies has raised investor concerns over leadership’s confidence in the near-term valuation.

According to a Form 144 filed with the U.S. Securities and Exchange Commission on November 20, 2025, Alex Karp filed to sell 585,000 Palantir shares, representing an aggregate market value of approximately $95.93 million, at an estimated sale price of $163.99 per share. 

The filing identifies Morgan Stanley Smith Barney LLC Executive Financial Services as the broker responsible for executing the transaction. The proposed sale date is listed as November 20, 2025, with the shares currently registered for trading on the NASDAQ exchange.

Palantir insider trading

Insider trading disclosures reviewed alongside the SEC filing indicate that Karp was not the only executive preparing to offload shares. Four other senior officers Stephen Cohen, Ryan Taylor, David Glazer, and Shyam Sankar each filed proposed stock sales on the same date, also at the $163.99-per-share reference price.

Collectively, the group has signalled intent to sell over 1.26 million shares, representing a combined market value of more than $205 million. Cohen’s filing reflects the second-largest transaction at roughly 405,000 shares valued at $66.41 million, while Sankar is set to sell 225,000 shares worth $36.90 million. 

The consistency in pricing and timing suggests a coordinated liquidation, possibly tied to scheduled options exercises or rolling executive sell-down programs, but the scale has nonetheless drawn market attention.

Technically, Palantir’s stock has now broken below its immediate support near the $160 region. Should selling persist, traders warn of potential further pullbacks toward $150, while a recovery above $165 would be required to restore bullish positioning. With insiders signalling significant proposed liquidation ahead of the year-end lock-up expiration window, volatility is likely to remain elevated over the short term.