Follow the people · Insider
William P. Phelan
William P. Phelan files insider transactions with the SEC as a director of Soluna Holdings (SLNH). We hold 13 disclosed purchases and sales filed since 18 May 2006, 13 of them in the last 90 days.
- Files forSLNH
- Disclosed buys and sells13 in all, 13 in the last 90 days
- Last disclosure4 September 2026
Positions held
3 posts we hold — a term names its own dates; a run of filings only says when they filed- Filed 14 January 2022 — 3 September 2026Director · Soluna Holdings (SLNH)23 Form 4 lines · source: SEC Form 4
- Filed 19 November 2025 — 31 August 2026Director · Soluna Holdings (SLNHP)17 Form 4 lines · source: SEC Form 4
- Filed 18 May 2006 — 13 May 2021Director · Mechanical Technology (MKTY)31 Form 4 lines · source: SEC Form 4
Everything they disclosed
71 entries, newest first — one per disclosure report, one per Form 4 line- ▼ sold on the open market 12,037 shares of Soluna HoldingsSEC Form 44 September 2026Common Stock · traded 3 September 2026 · filed 4 September 2026
- ▼ sold on the open market 5,039 shares of Soluna HoldingsSEC Form 41 September 20269.0% Series A Cumulative Perpetual Preferred Stock · traded 28 August 2026 · filed 1 September 2026
- ▼ sold on the open market 3,188 shares of Soluna HoldingsSEC Form 41 September 20269.0% Series A Cumulative Perpetual Preferred Stock · traded 31 August 2026 · filed 1 September 2026
- ▼ sold on the open market 5,000 shares of Soluna HoldingsSEC Form 427 August 20269.0% Series A Cumulative Perpetual Preferred Stock · traded 25 August 2026 · filed 27 August 2026
- ▼ sold on the open market 1,862 shares of Soluna HoldingsSEC Form 427 August 20269.0% Series A Cumulative Perpetual Preferred Stock · traded 26 August 2026 · filed 27 August 2026
- ▼ sold on the open market 8,099 shares of Soluna HoldingsSEC Form 427 August 20269.0% Series A Cumulative Perpetual Preferred Stock · traded 27 August 2026 · filed 27 August 2026
- ▼ sold on the open market 8,843 shares of Soluna HoldingsSEC Form 425 August 20269.0% Series A Cumulative Perpetual Preferred Stock · traded 21 August 2026 · filed 25 August 2026
- ▼ sold on the open market 5,000 shares of Soluna HoldingsSEC Form 425 August 20269.0% Series A Cumulative Perpetual Preferred Stock · traded 24 August 2026 · filed 25 August 2026
- ▼ sold on the open market 5,000 shares of Soluna HoldingsSEC Form 421 August 20269.0% Series A Cumulative Perpetual Preferred Stock · traded 19 August 2026 · filed 21 August 2026
- ▼ sold on the open market 1,157 shares of Soluna HoldingsSEC Form 421 August 20269.0% Series A Cumulative Perpetual Preferred Stock · traded 20 August 2026 · filed 21 August 2026
- ▼ sold on the open market 10,113 shares of Soluna HoldingsSEC Form 422 June 20269.0% Series A Cumulative Perpetual Preferred Stock · traded 17 June 2026 · filed 22 June 2026
- ▼ sold on the open market 4,813 shares of Soluna HoldingsSEC Form 422 June 20269.0% Series A Cumulative Perpetual Preferred Stock · traded 18 June 2026 · filed 22 June 2026
- ▼ sold on the open market 3,074 shares of Soluna HoldingsSEC Form 422 June 20269.0% Series A Cumulative Perpetual Preferred Stock · traded 22 June 2026 · filed 22 June 2026
- was granted 973,307 shares of Soluna HoldingsSEC Form 43 June 2026Common Stock · traded 1 June 2026 · filed 3 June 2026
- ▼ sold on the open market 1,300 shares of Soluna HoldingsSEC Form 417 December 2025Common Stock · traded 16 December 2025 · filed 17 December 2025
- ▼ sold on the open market 7,001 shares of Soluna HoldingsSEC Form 412 December 20259.0% Series A Cumulative Perpetual Preferred Stock · traded 10 December 2025 · filed 12 December 2025
- ▼ sold on the open market 3,737 shares of Soluna HoldingsSEC Form 412 December 20259.0% Series A Cumulative Perpetual Preferred Stock · traded 11 December 2025 · filed 12 December 2025
- was granted 917,932 shares of Soluna HoldingsSEC Form 43 December 2025Common Stock · traded 1 December 2025 · filed 3 December 2025
- ▼ sold on the open market 100 shares of Soluna HoldingsSEC Form 421 November 20259.0% Series A Cumulative Perpetual Preferred Stock · traded 19 November 2025 · filed 21 November 2025
- ▼ sold on the open market 500 shares of Soluna HoldingsSEC Form 421 November 20259.0% Series A Cumulative Perpetual Preferred Stock · traded 20 November 2025 · filed 21 November 2025
- gave away 36,500 shares of Soluna HoldingsSEC Form 421 November 20259.0% Series A Cumulative Perpetual Preferred Stock · traded 21 November 2025 · filed 21 November 2025
- was granted 133,560 shares of Soluna HoldingsSEC Form 42 September 2025Common Stock · traded 1 September 2025 · filed 2 September 2025
- ▼ sold on the open market 10,000 shares of Soluna HoldingsSEC Form 412 June 20259.0% Series A Cumulative Perpetual Preferred Stock · traded 10 June 2025 · filed 12 June 2025
- ▼ sold on the open market 3,350 shares of Soluna HoldingsSEC Form 412 June 20259.0% Series A Cumulative Perpetual Preferred Stock · traded 11 June 2025 · filed 12 June 2025
- was granted 99,115 shares of Soluna HoldingsSEC Form 43 June 2025Common Stock · traded 1 June 2025 · filed 3 June 2025
- was granted 49,315 shares of Soluna HoldingsSEC Form 43 December 2024Common Stock · traded 1 December 2024 · filed 3 December 2024
- was granted 4,076 shares of Soluna HoldingsSEC Form 44 September 2024Common Stock · traded 1 September 2024 · filed 4 September 2024
- was granted 48,769 shares of Soluna HoldingsSEC Form 44 September 2024Common Stock · traded 1 September 2024 · filed 4 September 2024
- was granted 6,852 shares of Soluna HoldingsSEC Form 45 June 2024Common Stock · traded 1 June 2024 · filed 5 June 2024
- returned to the issuer 1,064 shares of Soluna Holdings (a derivative holding)SEC Form 417 April 2024Stock Options (Right to Buy) · traded 15 April 2024 · filed 17 April 2024
- returned to the issuer 4,688 shares of Soluna Holdings (a derivative holding)SEC Form 417 April 2024Stock Options (Right to Buy) · traded 15 April 2024 · filed 17 April 2024
- was granted 185,421 shares of Soluna HoldingsSEC Form 417 April 20249.0% Series A Cumulative Perpetual Preferred Stock · traded 15 April 2024 · filed 17 April 2024
- was granted 47,059 shares of Soluna HoldingsSEC Form 417 April 2024Common Stock · traded 15 April 2024 · filed 17 April 2024
- was granted 117,188 shares of Soluna Holdings (a derivative holding)SEC Form 423 November 2022Stock options (Right to buy) · traded 22 November 2022 · filed 23 November 2022
- was granted 60,500 shares of Soluna HoldingsSEC Form 425 August 2022Common Stock · traded 14 January 2022 · filed 25 August 2022
- was granted 20,500 shares of Soluna HoldingsSEC Form 425 August 2022Common Stock · traded 26 January 2022 · filed 25 August 2022
- ▲ bought on the open market 199 shares of Soluna HoldingsSEC Form 425 August 2022Common Stock · traded 24 August 2022 · filed 25 August 2022
- ▲ bought on the open market 7,458 shares of Soluna HoldingsSEC Form 425 August 2022Common Stock · traded 24 August 2022 · filed 25 August 2022
- was granted 20,500 shares of Soluna HoldingsSEC Form 426 January 2022Common Stock · traded 26 January 2022 · filed 26 January 2022
- was granted 60,500 shares of Soluna HoldingsSEC Form 419 January 2022Common Stock · traded 14 January 2022 · filed 19 January 2022
- was granted 26,600 shares of Mechanical Technology (a derivative holding)SEC Form 417 May 2021Stock Options (Right to Buy) · traded 13 May 2021 · filed 17 May 2021
- was granted 7,500 shares of Mechanical TechnologySEC Form 429 March 2021Common Stock, $0.01 par value · traded 25 March 2021 · filed 29 March 2021
- exercised options over 12,500 shares of Mechanical Technology (a derivative holding)SEC Form 44 February 2021Stock Options (Right to Buy) · traded 2 February 2021 · filed 4 February 2021
- exercised options over 12,500 shares of Mechanical Technology (a derivative holding)SEC Form 44 February 2021Stock Options (Right to Buy) · traded 2 February 2021 · filed 4 February 2021
- exercised options over 13,000 shares of Mechanical Technology (a derivative holding)SEC Form 44 February 2021Stock Options (Right to Buy) · traded 2 February 2021 · filed 4 February 2021
- exercised options over 15,000 shares of Mechanical Technology (a derivative holding)SEC Form 44 February 2021Stock Options (Right to Buy) · traded 2 February 2021 · filed 4 February 2021
- exercised options over 18,000 shares of Mechanical Technology (a derivative holding)SEC Form 44 February 2021Stock Options (Right to Buy) · traded 2 February 2021 · filed 4 February 2021
- exercised options over 6,250 shares of Mechanical Technology (a derivative holding)SEC Form 44 February 2021Stock Options (Right to Buy) · traded 2 February 2021 · filed 4 February 2021
- exercised options over 12,500 shares of Mechanical TechnologySEC Form 44 February 2021Common Stock · traded 2 February 2021 · filed 4 February 2021
- exercised options over 12,500 shares of Mechanical TechnologySEC Form 44 February 2021Common Stock · traded 2 February 2021 · filed 4 February 2021
- exercised options over 13,000 shares of Mechanical TechnologySEC Form 44 February 2021Common Stock · traded 2 February 2021 · filed 4 February 2021
- exercised options over 15,000 shares of Mechanical TechnologySEC Form 44 February 2021Common Stock · traded 2 February 2021 · filed 4 February 2021
- exercised options over 18,000 shares of Mechanical TechnologySEC Form 44 February 2021Common Stock · traded 2 February 2021 · filed 4 February 2021
- exercised options over 6,250 shares of Mechanical TechnologySEC Form 44 February 2021Common Stock · traded 2 February 2021 · filed 4 February 2021
- exercised options over 17,500 shares of Mechanical Technology (a derivative holding)SEC Form 415 January 2021Restricted Stock Awards · traded 14 January 2021 · filed 15 January 2021
- exercised options over 17,500 shares of Mechanical TechnologySEC Form 415 January 2021Common Stock · traded 14 January 2021 · filed 15 January 2021
- ▲ bought on the open market 10,000 shares of Mechanical TechnologySEC Form 42 November 2016Common Stock · traded 10 August 2016 · filed 2 November 2016
- ▲ bought on the open market 70,488 shares of Mechanical TechnologySEC Form 42 November 2016Common Stock · traded 31 October 2016 · filed 2 November 2016
- ▲ bought on the open market 29,512 shares of Mechanical TechnologySEC Form 42 November 2016Common Stock · traded 1 November 2016 · filed 2 November 2016
- was granted 18,000 shares of Mechanical Technology (a derivative holding)SEC Form 415 January 2016Stock Options (Rights to Buy) · traded 14 January 2016 · filed 15 January 2016
- was granted 15,000 shares of Mechanical Technology (a derivative holding)SEC Form 46 March 2015Stock Options (Rights to Buy) · traded 5 March 2015 · filed 6 March 2015
- was granted 13,000 shares of Mechanical Technology (a derivative holding)SEC Form 413 March 2014Stock Options (Right to Buy) · traded 12 March 2014 · filed 13 March 2014
- was granted 12,500 shares of Mechanical Technology (a derivative holding)SEC Form 413 June 2013Stock Options (Rights to Buy) · traded 12 June 2013 · filed 13 June 2013
- was granted 12,500 shares of Mechanical Technology (a derivative holding)SEC Form 45 July 2012Stock Options (Rights to Buy) · traded 2 July 2012 · filed 5 July 2012
- was granted 15,000 shares of Mechanical TechnologySEC Form 411 July 2011Common Stock · traded 8 July 2011 · filed 11 July 2011
- was granted 15,000 shares of Mechanical Technology (a derivative holding)SEC Form 417 September 2010Stock Options (Rights to Buy) · traded 15 September 2010 · filed 17 September 2010
- was granted 15,000 shares of Mechanical Technology (a derivative holding)SEC Form 422 September 2009Stock Options (Rights to Buy) · traded 18 September 2009 · filed 22 September 2009
- was granted 50,000 shares of Mechanical Technology (a derivative holding)SEC Form 423 April 2007Stock Options (Rights to Buy) · traded 20 April 2007 · filed 23 April 2007
- was granted 7,500 shares of Mechanical Technology (a derivative holding)SEC Form 423 April 2007Stock Options (Rights to Buy) · traded 20 April 2007 · filed 23 April 2007
- was granted 20,000 shares of Mechanical Technology (a derivative holding)SEC Form 418 May 2006Stock Options (Right to Buy) · traded 18 May 2006 · filed 18 May 2006
- was granted 7,500 shares of Mechanical Technology (a derivative holding)SEC Form 418 May 2006Stock Options (Right to Buy) · traded 18 May 2006 · filed 18 May 2006
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.