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ACHR Archer Aviation Inc. Insider Trading

Multiple insiders have been active at Archer Aviation Inc. (ACHR): 7 distinct insiders account for 5 buy filings and 7 sell filings as of Mar 2026.

12 filings analyzed · Latest 2026-03-31

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Buys
5
Sells
7
Insiders
7
Direction
Net selling

Archer Aviation Inc. leadership

General Counsel
Eric Lentell — Chief Strategy & Legal Officer

Historically, stocks have lagged the S&P 500 by a median ~3% over the 90 days after a low insider sell (n ≈ 1,162, 2024-2026). Past results don't predict the future. How we measure this ↗

March 2026
2026-03-31 10b5-1 Plan
low
Chief Legal & Strategy Officer
100,000 shares
$533,000
@ $5.33
Significance 3

Chief Legal & Strategy Officer Eric Lentell sells 100,000 shares at $5.33–$5.36 via pre-arranged 10b5-1 plan.

Lentell executed 2 separate sales totaling 100,000 shares for $533,000.00 on 2026-03-26 and 2026-03-27, reducing his holdings from 150.1K to 50.1K shares (-66.6%). This transaction was part of a pre-arranged 10b5-1 trading plan adopted on 2025-09-03, meaning it was scheduled and non-discretionary. The sales alone do not signal insider conviction or concern about near-term valuation; they reflect a disciplined, pre-committed execution schedule. The magnitude of the reduction (two-thirds of holdings) reflects the terms of the plan rather than a real-time judgment about the company's prospects.

January 2026
2026-01-06 10b5-1 Plan
low
CHIEF TECHNOLOGY OFFICER
125,000 shares
$1,000,000
@ $8.00
Significance 3

CTO Thomas Paul Muniz sold 125,000 shares of ACHR at $8.00 on 2026-01-02 under pre-arranged 10b5-1 plan; retains 1,272,129 shares

Muniz Thomas Paul, Chief Technology Officer, executed a sale of 125,000 shares at $8.00 for $1,000,000.00 on 2026-01-02 as part of a pre-arranged 10b5-1 trading plan adopted on 2025-08-28. The transaction reduced his holdings by 8.9% to 1,272,129 shares. Because this sale was scheduled under a 10b5-1 plan rather than discretionary, it reflects a pre-committed divestiture executed according to formula, not a decision made in response to current market conditions or company developments. The CTO's substantial post-transaction holding of 1,272,129 shares indicates continued material ownership in Archer Aviation.

January 2025
2025-01-10 10b5-1 Plan
medium
CHIEF TECHNOLOGY OFFICER
50,000 shares
$600,000
@ $12.00
Significance 4

CTO Thomas Paul Muniz sold 50,000 shares of ACHR at $12.00 on 2025-01-07, retaining 1,070,360 shares post-transaction.

Thomas Paul Muniz, Chief Technology Officer, sold 50,000 shares (50.0K shares) of Archer Aviation at $12.00, reducing holdings by 4.5% while retaining a substantial 1,070,360 shares (1.07M shares). The transaction occurred at $12.00 per share, above the current price of $8.97 and notably above the 52-week high of $11.51, placing the sale execution near peak valuation. Archer Aviation reported net income of $-115,300,000.00 ($-115.3M) in its most recent full fiscal year, signaling material unprofitability. The sale's timing relative to the company's negative earnings and the subsequent 22.1% decline from the execution price to current levels merits monitoring, though the CTO retained substantial share ownership indicating ongoing exposure to company performance.

December 2024
2024-12-20 10b5-1 Plan
medium
470,000 shares
$4,700,000
@ $10.00
Significance 5

Director Michael Spellacy sells 470,000 shares at $10.00 for $4.7M under pre-arranged 10b5-1 plan

Michael Spellacy, a director at Archer Aviation Inc., executed 2 separate sales totaling 470,000 shares for $4,700,000.00 under a 10b5-1 trading plan adopted on 2024-09-13. The sales reduced his holdings by 28.8% from 1,632,183 shares to 1,162,183 shares. Because this transaction is part of a pre-arranged scheduled trading plan, the timing reflects plan mechanics rather than discretionary decision-making at the current price. The filing documents a substantial reduction in Spellacy's position, though the scheduled nature means no inference about his current market outlook should be drawn from the execution date.

2024-12-13 10b5-1 Plan
low
CHIEF TECHNOLOGY OFFICER
438,428 shares
$3,327,669
@ $7.59
Significance 4

CTO Thomas Paul Muniz sold 438,428 shares of ACHR at $7.59 on 2024-12-11 under pre-arranged 10b5-1 plan; retains 1,170,360 shares.

CTO Thomas Paul Muniz executed a sale of 438,428 shares representing 27.3% reduction in his holdings on 2024-12-11 at $7.59 per share, generating $3,327,668.52 in proceeds. This transaction was conducted under a pre-arranged 10b5-1 trading plan adopted on 2024-09-05, meaning the sale was scheduled and not a discretionary decision by the insider. Post-transaction, Muniz retains 1,170,360 shares, maintaining a substantial stake in the company. As a scheduled sale under a pre-existing trading plan, this transaction reflects predetermined execution rather than a real-time market signal.

2024-12-13
medium
751,879 shares
$4,999,995
@ $6.65
Significance 4

Stellantis (10% owner) bought 751,879 shares of Archer Aviation at $6.65 on 2024-12-11 for $5.0M, expanding stake to 60.49M shares despite unprofitability.

Stellantis, a major shareholder with 60.49M shares post-transaction, deployed $5.0M to add 751,879 shares of unprofitable Archer Aviation at $6.65, even as the company carries a full-year net loss of $115.3M. The stock has surged 96.0% in the past 30 days and 153.5% over 90 days, trading near its 52-week high at $8.39 (only 12.3% below the peak at $9.57). Stellantis' prior five purchases at ACHR show a 0 of 5 record of positive 90-day returns, with three earlier 2024 buys followed by declines ranging from -31.8% to -37.1%. The timing of this purchase during a steep rally and amid ongoing losses mirrors a pattern that has not yielded favorable outcomes on Stellantis' prior accumulation efforts at this ticker.

2024-12-05 10b5-1 Plan
medium
General Counsel and Secretary
114,788 shares
$773,671
@ $6.74
Significance 5

General Counsel Lentell Eric sells entire 114,788 share stake in ACHR at $6.74 per share via pre-arranged 10b5-1 plan

Lentell Eric, serving as General Counsel and Secretary, executed a complete liquidation of his ACHR holdings, selling 114,788 shares for $773,671.12 under a pre-arranged 10b5-1 trading plan adopted on 2024-09-05. The sale reduced his holdings from 114,788 shares to 0 shares, representing a -100.0% net change. Because this transaction is part of a scheduled 10b5-1 plan rather than a discretionary trade, it reflects a predetermined execution timeline established nearly three months prior, not a response to current market conditions. The complete divestiture of his position warrants investor attention as a material change in executive shareholding alignment.

2024-12-05 10b5-1 Plan
medium
CHIEF PEOPLE PARTNERSHIPS OFF.
150,000 shares
$960,000
@ $6.40
Significance 4

Chief People Partnerships Officer Perkins Tosha sold 150,000 shares (43.2% reduction) at $6.40 via pre-arranged 10b5-1 plan.

Perkins Tosha, Chief People Partnerships Officer, sold 150,000 shares of Archer Aviation at $6.40 on 2024-12-03, reducing her holdings from 347,355 shares to 197,355 shares. This sale was executed under a pre-arranged 10b5-1 trading plan adopted on 2024-05-24, making it a scheduled transaction rather than a discretionary decision in response to current market conditions. The 43.2% reduction in her holdings represents a material divestiture of her ACHR position. As a scheduled 10b5-1 transaction, the sale reflects prior trading authorization rather than real-time conviction, limiting inference about the executive's current outlook on the company.

November 2024
2024-11-26
medium
5,150 shares
$38,522
@ $7.48
Significance 4

Director Diaz bought 5,150 shares of ACHR at $7.48, increasing stake to 98,886 shares amid 90-day surge of +102.8%.

Deborah Diaz, a Director, purchased 5,150 shares at $7.48 on 2024-11-25, expanding her holdings from 93,736 to 98,886 shares. The transaction occurred near the 52-week high of $7.48, following a sharp 90-day price appreciation of +102.8% and a 30-day surge of +132.9%. However, this buy should be contextualized against Diaz's cross-ticker track record: across her prior open-market activity, she averaged a -17.7% 90-day return with a 0.00% win rate. Additionally, Archer Aviation itself remains unprofitable with a net income of $-115,300,000.00 over the most recent full fiscal year. The timing and magnitude of the purchase at a 52-week peak, combined with the insider's historical underperformance and the company's ongoing losses, present a profile that merits closer examination.

2024-11-21
medium
Chief Executive Officer
19,762 shares
$101,181
@ $5.12
Significance 6

CEO Adam D Goldstein bought 19,762 shares of ACHR at $5.12 on 2024-11-21 for $101,181.44

CEO Adam D Goldstein purchased 19,762 shares at $5.12 per share, raising his holdings to 2,014,890 shares from 1,995,128 shares. The transaction increased his stake by 19,762 shares (+1.0% vs pre-transaction holdings). The filing flagged 3 reported line(s) that were excluded due to transaction-code conflicts with the filing's direction flag or footnotes, indicating potential data-quality issues in the underlying submission that warrant verification before drawing conclusions about the trade's intent or market context.

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