William F. Leimkuhler

CIK 1361943 · View on SEC EDGAR ↗

Insider

First SEC filing: Sept. 28, 2007 · Latest: June 12, 2026

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Insider at

Insider transactions

0 buys (P) 10 sells (S) Net: $-18,172,620 + 67 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

67 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
April 28, 2026 AGX S 5,000 $617.41 $3,087,050 36,495 Direct -12.05% Disposed -15.9% (price as of 2026-08-21)
April 28, 2026 AGX S 400 $621.14 $248,456 500 Indirect -44.44% Disposed -16.4% (price as of 2026-08-21)
April 28, 2026 AGX S 400 $618.61 $247,444 500 Indirect -44.44% Disposed -16.0% (price as of 2026-08-21)
April 13, 2026 AGX S 8,444 $598.49 $5,053,650 41,495 Direct -16.91% Disposed -13.2% (price as of 2026-08-21)
Jan. 16, 2026 AGX S 11,044 $379.15 $4,187,333 49,939 Direct -18.11% Disposed 37.0% (price as of 2026-08-21)
Jan. 13, 2026 AGX S 4,212 $320.53 $1,350,072 60,983 Direct -6.46% Disposed 62.1% (price as of 2026-08-21)
Jan. 12, 2026 AGX S 2,164 $318.28 $688,758 65,195 Direct -3.21% Disposed 63.2% (price as of 2026-08-21)
Dec. 23, 2025 AGX S 100 $337.01 $33,701 900 Indirect -10.00% Disposed 54.2% (price as of 2026-08-21)
Dec. 23, 2025 AGX S 100 $337.93 $33,793 900 Indirect -10.00% Disposed 53.7% (price as of 2026-08-21)
Oct. 1, 2025 AGX S 11,802 $274.73 $3,242,363 38,834 Direct -23.31% Disposed 89.1% (price as of 2026-08-21)
June 30, 2025 AGX S 7,604 $222.03 $1,688,316 50,636 Direct -13.06% Disposed 134.0% (price as of 2026-08-21)
June 27, 2025 AGX S 4,051 $221.25 $896,284 58,240 Direct -6.50% Disposed 134.8% (price as of 2026-08-21)
June 11, 2025 AGX S 8,345 $219.31 $1,830,142 62,291 Direct -11.81% Disposed 136.9% (price as of 2026-08-21)
Sept. 23, 2024 AGX S 10,000 $96.20 $962,000 35,852 Direct -21.81% Disposed 440.0% (price as of 2026-08-21)
Jan. 30, 2017 AGX S 2,000 $73.23 $146,460 0 Indirect -100.00% Disposed 609.4% (price as of 2026-08-21)
Oct. 31, 2016 AGX S 5,000 $56.53 $282,650 15,000 Direct -25.00% Disposed 819.0% (price as of 2026-08-21)
Oct. 27, 2016 AGX S 4,377 $55.47 $242,792 20,000 Direct -17.96% Disposed 836.6% (price as of 2026-08-21)
Oct. 26, 2016 AGX S 623 $55.40 $34,514 24,377 Direct -2.49% Disposed 837.7% (price as of 2026-08-21)
Sept. 30, 2016 AGX S 5,000 $59.12 $295,600 25,000 Direct -16.67% Disposed 778.7% (price as of 2026-08-21)
Oct. 8, 2013 AGX P 1,000 $21.10 $21,100 2,000 Indirect +100.00% Acquired 2362.1% (price as of 2026-08-21)
Oct. 8, 2013 AGX P 900 $21.20 $19,080 1,000 Indirect +900.00% Acquired 2350.5% (price as of 2026-08-21)
Oct. 8, 2013 AGX P 100 $21.17 $2,117 100 Indirect — Acquired 2354.0% (price as of 2026-08-21)
Oct. 8, 2013 AGX P 86 $21.24 $1,827 1,000 Indirect +9.41% Acquired 2345.9% (price as of 2026-08-21)
Oct. 8, 2013 AGX P 914 $21.28 $19,450 914 Indirect — Acquired 2341.3% (price as of 2026-08-21)
Oct. 7, 2013 AGX P 1,000 $21.33 $21,330 1,000 Indirect — Acquired 2335.6% (price as of 2026-08-21)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Derivative holdings (Form 4 Table II)

Options, RSUs and convertible securities reported on Form 4 Table II.

Date Ticker Security Underlying Exercise price Expiration Shares A/D
June 10, 2026 AGX Time-Based Restricted Stock Units Common Stock (189) $0.00 — 189 Acquired
June 10, 2026 AGX Time-Based Restricted Stock Units Common Stock (530) $0.00 — 530 Disposed
Jan. 7, 2026 AGX Option to Purchase Common Stock Common Stock (10,000) $40.15 Dec. 23, 2029 10,000 Disposed
Jan. 7, 2026 AGX Option to Purchase Common Stock Common Stock (10,000) $45.75 Dec. 14, 2030 10,000 Disposed
Jan. 7, 2026 AGX Option to Purchase Common Stock Common Stock (5,000) $37.13 Dec. 14, 2031 5,000 Disposed
Jan. 7, 2026 AGX Option to Purchase Common Stock Common Stock (5,000) $35.72 Dec. 16, 2032 5,000 Disposed
Dec. 16, 2025 AGX Time-Based Restricted Stock Units Common Stock (1,750) $0.00 — 1,750 Disposed
Dec. 14, 2025 AGX Time-Based Restricted Stock Units Common Stock (833) $0.00 — 833 Disposed
June 17, 2025 AGX Time-Based Restricted Stock Units Common Stock (530) $0.00 — 530 Acquired
June 10, 2025 AGX Time-Based Restricted Stock Units Common Stock (388) $0.00 — 388 Disposed
June 9, 2025 AGX Option to Purchase Common Stock Common Stock (10,000) $71.75 Jan. 5, 2027 10,000 Disposed
June 9, 2025 AGX Option to Purchase Common Stock Common Stock (10,000) $46.35 Jan. 11, 2028 10,000 Disposed
June 9, 2025 AGX Option to Purchase Common Stock Common Stock (10,000) $41.19 Dec. 12, 2028 10,000 Disposed
Jan. 21, 2025 AGX Option to Purchase Common Stock Common Stock (10,000) $30.44 Jan. 7, 2026 10,000 Disposed
Dec. 14, 2024 AGX Time-Based Restricted Stock Units Common Stock (1,750) $0.00 — 1,750 Disposed
Dec. 14, 2024 AGX Time-Based Restricted Stock Units Common Stock (833) $0.00 — 833 Disposed
Dec. 12, 2024 AGX Time-Based Restricted Stock Units Common Stock (388) $0.00 — 388 Acquired
June 14, 2024 AGX Option to Purchase Common Stock Common Stock (10,000) $31.82 Dec. 11, 2024 10,000 Disposed
Dec. 14, 2023 AGX Option to Purchase Common Stock Common Stock (1,500) $43.70 Dec. 14, 2033 1,500 Acquired
Dec. 14, 2023 AGX Time-Based Restricted Stock Units Common Stock (2,500) $0.00 Dec. 14, 2026 2,500 Acquired
June 14, 2023 AGX Option to Purchase Common Stock Common Stock (10,000) $26.88 Dec. 17, 2023 10,000 Disposed
Dec. 16, 2022 AGX Option to Purchase Common Stock Common Stock (5,000) $35.72 Dec. 16, 2032 5,000 Acquired
Dec. 16, 2022 AGX Time-Based Restricted Stock Units Common Stock (1,750) $0.00 Dec. 16, 2025 1,750 Acquired
Dec. 14, 2021 AGX Option to Purchase Common Stock Common Stock (5,000) $37.13 Dec. 14, 2031 5,000 Acquired
Dec. 14, 2021 AGX Time-Based Restricted Stock Units Common Stock (1,750) $0.00 Dec. 14, 2024 1,750 Acquired
Dec. 14, 2020 AGX Stock Option to Purchase Common Stock Common Stock (10,000) $45.75 Dec. 14, 2030 10,000 Acquired
July 20, 2020 AGX Stock Option to Purchase Common Stock Common Stock $18.87 Dec. 18, 2022 10,000 Disposed
Dec. 23, 2019 AGX Stock Option to Purchase Common Stock Common Stock (10,000) $40.15 Dec. 23, 2029 10,000 Acquired
Dec. 12, 2019 AGX Stock Option to purchase Common Stock Common Stock (10,000) $41.19 Dec. 12, 2028 10,000 Acquired
Jan. 11, 2018 AGX Stock Option to purchase Common Stock Common Stock (10,000) $46.35 Jan. 11, 2028 10,000 Acquired
Dec. 12, 2017 AGX Stock Option to purchase Common Stock Common Stock (5,000) $17.33 Dec. 20, 2021 5,000 Disposed
Jan. 5, 2017 AGX Stock Option to purchase Common Stock Common Stock (10,000) $71.75 Jan. 5, 2027 10,000 Acquired
Jan. 7, 2016 AGX Stock Option to purchase Common Stock Common Stock (10,000) $30.44 Jan. 7, 2026 10,000 Acquired
Dec. 29, 2015 AGX Stock Option to purchase Common Stock Common Stock (5,000) $16.47 April 2, 2022 5,000 Disposed
Dec. 11, 2014 AGX Stock Option to purchase Common Stock Common Stock (10,000) $31.82 Dec. 11, 2024 10,000 Acquired
Oct. 1, 2014 AGX Stock Option to purchase Common Stock Common Stock (5,000) $12.43 Dec. 17, 2019 5,000 Disposed
Dec. 17, 2013 AGX Stock Option to purchase Common Stock Common Stock (10,000) $26.88 Dec. 17, 2023 10,000 Acquired
Oct. 8, 2013 AGX Stock Option to purchase Common Stock Common Stock (5,000) $9.01 Dec. 16, 2020 5,000 Disposed
Dec. 18, 2012 AGX Stock Option to purchase Common Stock Common Stock (10,000) $18.87 Dec. 18, 2022 10,000 Acquired
April 12, 2012 AGX Stock Option to purchase Common Stock Common Stock (15,000) $6.40 June 19, 2012 15,000 Disposed
April 2, 2012 AGX Stock Option to purchase Common Stock Common Stock (5,000) $16.47 April 2, 2022 5,000 Acquired
Dec. 20, 2011 AGX Stock Option to purchase Common Stock Common Stock (5,000) $17.33 Dec. 20, 2021 5,000 Acquired
Dec. 16, 2010 AGX Stock Option to purchase Common Stock Common Stock (5,000) $9.01 Dec. 16, 2020 5,000 Acquired
Dec. 17, 2009 AGX stock option to purchase common stock common stock (5,000) $12.43 Dec. 17, 2019 5,000 Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 1 holding

Securities held when first becoming an insider, per SEC Form 3.

Date Ticker Security Shares Ownership
Sept. 28, 2007 AGX Option to Purchase Common Stock→ Common Stock (15,000) 15,000 Direct