| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
Chief Financial Officer | Chief Financial Officer
1 company
Mark Mesler last filed a Form 4 in May 2025, as Chief Financial Officer at ACHR. Mark Mesler's net worth is not public. Form 4 filings only show shares in the companies where this person was an insider, as of the last filing.
Our model assigns Mark Mesler a middling insider score of 68/100, based on 4 past trades. Over a 12-month horizon, all 4 of those trades were profitable, with an average 12-month return of +49.0%.
At the last filing, the largest reported position was 711,525 shares of ACHR. The ACHR filings lean toward selling, a net 127,531 shares.
Mark Mesler has 17 Form 4 filings on record from April 2022 to May 2025, all as Chief Financial Officer at Archer Aviation (ACHR), 2022–2025.
The 45 reported transactions were 25 option exercises, 13 tax withholdings, 3 open-market sales and 3 option or other derivative awards, plus smaller numbers of other types.
Counted by filing, the open-market trades come to 1 purchase worth about $53K and 3 sales worth about $1.4M.
The only open-market purchase was 20,000 shares of ACHR at an average $2.63 on January 13, 2023, about $53K. Twelve months later ACHR was up 99%.
The largest open-market sale was 50,775 shares of ACHR at an average $12.99 on May 16, 2025, about $659K. Twelve months later ACHR was down 55%.
None of the 3 sales since April 2023 was marked as made under a Rule 10b5-1 trading plan.
Shares as reported in the last Form 4 for each company; the most recent is from May 2025. Values use today's prices. Any trades after the last filing were not reported, so current holdings may differ.
| Date | Ticker | Role | Type | Shares | Price | Value | Chg% | 3M | 12M | SEC |
|---|---|---|---|---|---|---|---|---|---|---|
| May 16, 2025 | ACHR Archer Aviation Inc. | Chief Financial Officer | Sale+OE | 50,775 | $12.99 | $659,460.62 | -6.7% | -24.9% | -54.5% | |
| Mar 31, 2025 | ACHR Archer Aviation Inc. | Chief Financial Officer | Sale+OE | 34,498 | $7.04 | $242,703.78 | -5.0% | +52.6% | -27.3% | |
| Mar 4, 2025 | ACHR Archer Aviation Inc. | Chief Financial Officer | Sale+OE | 62,258 | $7.70 | $479,492.44 | -9.0% | +21.9% | -15.3% | |
| Jan 13, 2023 | ACHR Archer Aviation Inc. | Chief Financial Officer | Buy | 20,000 | $2.63 | $52,612.00 | New | -11.9% | +98.8% |