Follow the people · Insider
William Thomas Elsener
William Thomas Elsener files insider transactions with the SEC as an evp, reservoir engineering of Matador Resources Co (MTDR). We hold 1 disclosed purchase or sale filed since 23 June 2022, 1 of them in the last 90 days.
- Files forMTDR
- Disclosed buys and sells1 in all, 1 in the last 90 days
- Last disclosure12 August 2026
Positions held
1 post we hold — a term names its own dates; a run of filings only says when they filed- Filed 22 June 2022 — 10 August 2026EVP, Reservoir Engineering · Matador Resources Co (MTDR)46 Form 4 lines · source: SEC Form 4
Everything they disclosed
46 entries, newest first — one per disclosure report, one per Form 4 line- ▲ bought on the open market 850 shares of Matador Resources CoSEC Form 412 August 2026Common Stock · traded 10 August 2026 · filed 12 August 2026
- had shares withheld for tax on 1,050 shares of Matador Resources CoSEC Form 418 February 2026Common Stock · traded 16 February 2026 · filed 18 February 2026
- exercised options over 5,000 shares of Matador Resources Co (a derivative holding)SEC Form 418 February 2026Phantom Units · traded 14 February 2026 · filed 18 February 2026
- exercised options over 6,000 shares of Matador Resources Co (a derivative holding)SEC Form 418 February 2026Phantom Units · traded 14 February 2026 · filed 18 February 2026
- exercised options over 5,000 shares of Matador Resources Co (a derivative holding)SEC Form 418 February 2026Phantom Units · traded 14 February 2026 · filed 18 February 2026
- exercised options over 6,000 shares of Matador Resources Co (a derivative holding)SEC Form 418 February 2026Phantom Units · traded 14 February 2026 · filed 18 February 2026
- was granted 27,000 shares of Matador Resources Co (a derivative holding)SEC Form 418 February 2026Phantom Units · traded 17 February 2026 · filed 18 February 2026
- was granted 27,000 shares of Matador Resources Co (a derivative holding)SEC Form 418 February 2026Phantom Units · traded 17 February 2026 · filed 18 February 2026
- had shares withheld for tax on 1,050 shares of Matador Resources CoSEC Form 418 February 2026Common Stock · traded 16 February 2026 · filed 18 February 2026
- was granted 3,480 shares of Matador Resources CoSEC Form 48 January 2026Common Stock · traded 6 January 2026 · filed 8 January 2026
- had shares withheld for tax on 1,554 shares of Matador Resources CoSEC Form 48 January 2026Common Stock · traded 6 January 2026 · filed 8 January 2026
- was granted 3,480 shares of Matador Resources CoSEC Form 48 January 2026Common Stock · traded 6 January 2026 · filed 8 January 2026
- had shares withheld for tax on 1,554 shares of Matador Resources CoSEC Form 48 January 2026Common Stock · traded 6 January 2026 · filed 8 January 2026
- ▲ bought on the open market 600 shares of Matador Resources CoSEC Form 44 November 2025Common Stock · traded 31 October 2025 · filed 4 November 2025
- ▲ bought on the open market 600 shares of Matador Resources CoSEC Form 415 September 2025Common Stock · traded 11 September 2025 · filed 15 September 2025
- ▲ bought on the open market 750 shares of Matador Resources CoSEC Form 42 May 2025Common Stock · traded 1 May 2025 · filed 2 May 2025
- ▲ bought on the open market 700 shares of Matador Resources CoSEC Form 44 March 2025Common Stock · traded 4 March 2025 · filed 4 March 2025
- ▲ bought on the open market 1,000 shares of Matador Resources CoSEC Form 427 February 2025Common Stock · traded 26 February 2025 · filed 27 February 2025
- was granted 18,000 shares of Matador Resources Co (a derivative holding)SEC Form 419 February 2025Phantom Units · traded 14 February 2025 · filed 19 February 2025
- exercised options over 5,000 shares of Matador Resources Co (a derivative holding)SEC Form 419 February 2025Phantom Units · traded 14 February 2025 · filed 19 February 2025
- had shares withheld for tax on 1,050 shares of Matador Resources CoSEC Form 419 February 2025Common Stock · traded 16 February 2025 · filed 19 February 2025
- had shares withheld for tax on 1,527 shares of Matador Resources CoSEC Form 419 February 2025Common Stock · traded 17 February 2025 · filed 19 February 2025
- was granted 13,711 shares of Matador Resources CoSEC Form 410 January 2025Common Stock · traded 7 January 2025 · filed 10 January 2025
- had shares withheld for tax on 5,552 shares of Matador Resources CoSEC Form 410 January 2025Common Stock · traded 7 January 2025 · filed 10 January 2025
- ▲ bought on the open market 800 shares of Matador Resources CoSEC Form 416 December 2024Common Stock · traded 13 December 2024 · filed 16 December 2024
- ▲ bought on the open market 500 shares of Matador Resources CoSEC Form 412 September 2024Common Stock · traded 10 September 2024 · filed 12 September 2024
- had shares withheld for tax on 1,640 shares of Matador Resources CoSEC Form 46 June 2024Common Stock · traded 4 June 2024 · filed 6 June 2024
- had shares withheld for tax on 1,050 shares of Matador Resources CoSEC Form 421 February 2024Common Stock · traded 16 February 2024 · filed 21 February 2024
- had shares withheld for tax on 1,527 shares of Matador Resources CoSEC Form 421 February 2024Common Stock · traded 17 February 2024 · filed 21 February 2024
- was granted 15,000 shares of Matador Resources Co (a derivative holding)SEC Form 416 February 2024Phantom Units · traded 14 February 2024 · filed 16 February 2024
- exercised options over 4,548 shares of Matador Resources Co (a derivative holding)SEC Form 48 February 2024Employee Stock Option · traded 6 February 2024 · filed 8 February 2024
- exercised options over 4,548 shares of Matador Resources CoSEC Form 48 February 2024Common Stock · traded 6 February 2024 · filed 8 February 2024
- had shares withheld for tax on 3,421 shares of Matador Resources CoSEC Form 48 February 2024Common Stock · traded 6 February 2024 · filed 8 February 2024
- was granted 22,250 shares of Matador Resources CoSEC Form 42 January 2024Common Stock · traded 31 December 2023 · filed 2 January 2024
- had shares withheld for tax on 8,756 shares of Matador Resources CoSEC Form 42 January 2024Common Stock · traded 31 December 2023 · filed 2 January 2024
- exercised options over 1,667 shares of Matador Resources Co (a derivative holding)SEC Form 423 June 2023Phantom Units · traded 22 June 2023 · filed 23 June 2023
- had shares withheld for tax on 1,640 shares of Matador Resources CoSEC Form 46 June 2023Common Stock · traded 4 June 2023 · filed 6 June 2023
- ▲ bought on the open market 500 shares of Matador Resources CoSEC Form 416 March 2023Common Stock · traded 15 March 2023 · filed 16 March 2023
- was granted 8,000 shares of Matador Resources CoSEC Form 417 February 2023Common Stock · traded 16 February 2023 · filed 17 February 2023
- had shares withheld for tax on 1,527 shares of Matador Resources CoSEC Form 417 February 2023Common Stock · traded 17 February 2023 · filed 17 February 2023
- was granted 8,750 shares of Matador Resources CoSEC Form 44 January 2023Common Stock · traded 31 December 2022 · filed 4 January 2023
- had shares withheld for tax on 3,444 shares of Matador Resources CoSEC Form 44 January 2023Common Stock · traded 31 December 2022 · filed 4 January 2023
- exercised options over 9,334 shares of Matador Resources Co (a derivative holding)SEC Form 431 October 2022Employee Stock Option · traded 27 October 2022 · filed 31 October 2022
- exercised options over 9,334 shares of Matador Resources CoSEC Form 431 October 2022Common Stock · traded 27 October 2022 · filed 31 October 2022
- had shares withheld for tax on 4,903 shares of Matador Resources CoSEC Form 431 October 2022Common Stock · traded 27 October 2022 · filed 31 October 2022
- exercised options over 1,667 shares of Matador Resources Co (a derivative holding)SEC Form 423 June 2022Phantom Units · traded 22 June 2022 · filed 23 June 2022
Positions come from the unitedstates/congress-legislators roster, the Office of Government Ethics and the SEC’s Form 4 index. Every disclosed line names its own source and links the document the government published; we print what the filing says and never a price we did not read from it. Headlines and links come from the GDELT Global Knowledge Graph — the story stays with the publisher. The portrait, where we have one, is the public-domain Congressional Bioguide photograph.