Insider Trading May 19, 2026 08:19 PM

Archer Aviation CTO Muniz Sells Shares Following RSU Vesting; Stock Performance and Financial Metrics Under Scrutiny

Analysis of recent insider transactions, including the sale of 136,579 shares by Thomas Paul Muniz, alongside Q1 earnings data and current market valuations for ACHR.

By Derek Hwang ACHR

Thomas Paul Muniz, Chief Technology Officer at Archer Aviation Inc., recently executed two separate sales totaling 136,579 shares. These transactions were related to tax withholding obligations stemming from the vesting of restricted stock units (RSUs). The article details these sales alongside other recent corporate events, including Mr. Muniz's prior acquisition of RSUs and the company's first quarter 2026 earnings report, which surpassed analyst expectations but coincided with a decline in after-hours trading.

Archer Aviation CTO Muniz Sells Shares Following RSU Vesting; Stock Performance and Financial Metrics Under Scrutiny
ACHR

Key Points

  • The transactions highlight the use of vested RSUs to cover tax obligations related to executive compensation.
  • Despite strong Q1 financial results (EPS of -$0.28 and revenue of $1.6 million), the stock declined in after-hours trading.
  • Muniz's holdings demonstrate a pattern of significant share accumulation via RSU vesting, followed by controlled sales for tax purposes.

Thomas Paul Muniz, Chief Technology Officer at Archer Aviation Inc. (NASDAQ:ACHR), conducted two distinct sales transactions totaling 136,579 shares of the company’s Class A Common Stock. These divestitures occurred over two periods on May 15 and May 18, 2026, resulting in a total realized value of approximately $817,863.

The sales were executed across a price range spanning from $5.87 to $6.135 per share. On May 15, Mr. Muniz sold 44,740 shares, realizing a weighted average price of $6.0611 per share. The stated purpose for this initial sale was to satisfy tax withholding obligations that arose from the vesting of performance restricted stock units. Subsequently, on May 18, an additional block of 91,839 shares was sold at a weighted average price of $5.9527 per share. This second transaction also served to cover necessary tax withholding obligations associated with the vesting of other restricted stock units.


These insider transactions are reported against a backdrop of varying market sentiment for Archer Aviation. As of recent reporting, Archer Aviation shares were trading at $5.91, reflecting a decline of 47.7% over the past year and a decrease of 21.4% year-to-date. Despite this volatility, one analysis suggests that the stock may be slightly undervalued at current levels, with an estimated Fair Value calculated at $6.13.

The company's equity exhibits notable market volatility, quantified by a beta of 3.13. Investors seeking deeper insights into Archer Aviation’s potential prospects have access to additional analysis tools and tips.


Before the reported sales, Mr. Muniz had engaged in an acquisition event on May 15, 2026. On this date, he acquired a total of 168,026 shares of Class A Common Stock through the conversion of Restricted Stock Units (RSUs) into common stock at no cost to him. These vesting events were structured across multiple tranches: 143,750 shares, 8,946 shares, 7,611 shares, and 7,719 shares vested on that particular date. It is important to note that each RSU represents a contingent right granting the holder one share of Archer Aviation’s Class A Common Stock.

Following these detailed transactions, Thomas Paul Muniz's direct holdings in Archer Aviation Class A Common Stock amounted to 1,462,314 shares. Furthermore, he retains an additional holding of 760,465 Restricted Stock Units.


Risks

  • High volatility (beta of 3.13) suggests sensitivity to market movements and increased risk exposure.
  • The recent decline in after-hours trading, even following better-than-expected earnings, signals potential underlying investor concerns or liquidity pressures.
  • Ongoing evaluations by financial analysts mean that future performance is subject to continuous scrutiny and changing assumptions.

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