Mechanical Technology Inc

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Mechanical Technology Inc
TickerSLNH
CIK #0000064463
CUSIP583543103
SectorLife Sciences - Measuring & Controlling Devices, Nec
Address431 New Karner Road Building #4, Albany, NY 12205
Source [EDGAR]
Reg D Offering (Form D) Filed Raised Terms
Soluna Holdings Inc 2022-12-20 Exemption: 506(b) · Remaining: $85,500 · Duration: One year or less · Revenue: Decline to Disclose
Mechanical Technology Inc 2020-12-18 0.0 M Exemption: 506(b) · Duration: One year or less · Revenue: $5,000,001 - $25,000,000
CIK Filing 2011 - 2026
[0000064463] 10-K
[0000064463] 10-Q
[0000064463] 3
[0000064463] 4
[0000064463] 8-K
[0000064463] D
[0000064463] SC 13D
[0000064463] SC 13G
Form 13D/13G Filer Form 13D/13G Subject Filed % Owned
Bugbee Robert L Soluna Holdings Inc [2026-05-26] 0.0
Bugbee Robert L Soluna Holdings Inc [2026-02-11] 0.0
Intracoastal Capital LLC Soluna Holdings Inc [2025-07-18] 0.0
Ya II PN Ltd Soluna Holdings Inc [2025-02-06] 0.0
BOOS Wayne W Soluna Holdings Inc [2023-08-01] 6.781941
Alpha Capital Anstalt Soluna Holdings Inc [2023-03-30] 9.99
Brookstone Partners IAC Inc Soluna Holdings Inc [2022-03-09] 38.5
DOMO Capital Management LLC Soluna Holdings Inc [2022-01-05] 7.3
Waichun Logistics Technology Ltd Mechanical Technology Inc [2021-05-11] 8.69
Brookstone Partners Acquisition XXIV LLC Mechanical Technology Inc [2016-10-27] 41.7
ZEFF Capital LP Mechanical Technology Inc [2016-09-14] 5.1
Lim PENG K Mechanical Technology Inc [2015-02-12] 100.0
Lim PENG K Mechanical Technology Inc [2014-03-18] 100.0
Form 3/4/5 Filer 2011 - 2026
Mechanical Technology Inc
Phelan William P
Thomas Jessica L
OReilly Mary Jennifer
Michaels David C
Marusak Thomas J
Belizaire John
Hirshfield Edward R
Lipman Matthew E
Bottomley John
Hazelip William
Toporek Michael
Picchi Michael
Budzyn Agnieszka Teresa
Tunison John
Patman Philip F Jr
Madhavji Alykhan
Binyamin Moshe
Jones Frederick W
Brookstone Partners Acquisition XXIV LLC
BP XXIV Meter LLC
BP XXIV Flow LLC
Lynch Kevin G
Robb Walter L
OConnor E Dennis
Lim PENG K
Insider Transaction (Form 3/4/5) Date Action Shares Price Value ($)
Thomas Jessica L
Common Stock
2026-01-01 Grant 460,000 $0.00
Phelan William P
Common Stock
2025-12-16 Sell 1,300 $1.41 1,833
Michaels David C
9.0% Series A Cumulative Perpetual Preferred Stock
2025-12-12 Sell 5,669 $9.26 52,495
Michaels David C
Common Stock
2025-12-12 Sell 1,017 $2.19 2,227
Hirshfield Edward R
9.0% Series A Cumulative Perpetual Preferred Stock
2025-12-12 Sell 2,000 $9.76 19,520
Phelan William P
9.0% Series A Cumulative Perpetual Preferred Stock
2025-12-11 Sell 3,737 $9.52 35,576
Hirshfield Edward R
9.0% Series A Cumulative Perpetual Preferred Stock
2025-12-11 Sell 741 $9.90 7,336
Hirshfield Edward R
9.0% Series A Cumulative Perpetual Preferred Stock
2025-12-10 Sell 2,000 $9.70 19,400
Phelan William P
9.0% Series A Cumulative Perpetual Preferred Stock
2025-12-10 Sell 7,001 $9.58 67,070
Common Stock
2025-12-01 Grant 226,108 $0.00
Common Stock
2025-12-01 Grant 2,861,788 $0.00
Lipman Matthew E
Common Stock
2025-12-01 Grant 685,074 $0.00
Phelan William P
Common Stock
2025-12-01 Grant 917,932 $0.00
Budzyn Agnieszka Teresa
Common Stock
2025-12-01 Grant 350,000 $0.00
OReilly Mary Jennifer
Common Stock
2025-12-01 Grant 685,074 $0.00
Hirshfield Edward R
Common Stock
2025-12-01 Grant 685,074 $0.00
Hazelip William
Common Stock
2025-12-01 Grant 685,074 $0.00
Toporek Michael
Common Stock
2025-12-01 Grant 6,894,614 $0.00
Belizaire John
Common Stock
2025-12-01 Grant 2,861,788 $0.00
Common Stock
2025-12-01 Tax withheld 20,979 $1.63 34,196
showing 20 of 200 most recent transactions
13F Ownership Over TimeHoldersShares Held
2026-03-31 44 10,297,257
2025-12-31 45 12,344,499
2025-09-30 35 2,809,814
2025-06-30 21 530,205
2025-03-31 21 619,840
2024-12-31 25 396,525
2024-09-30 24 341,637
2024-06-30 16 65,998
2024-03-31 14 66,792
2023-12-31 13 61,787
2023-09-30 20 710,421
2023-06-30 20 926,941
Form 13F Holdings
Firm Period DFND Voting Shares
RFG Advisory LLC [2026-06-30] SOLE 0 100,000
Activest Wealth Management [2026-06-30] SOLE 0 83,000
Lauer Wealth LLC [2026-06-30] SOLE 0 50,000
Wealth Enhancement Advisory Services LLC [2026-06-30] SOLE 0 15,410
Merit Financial Group LLC [2026-06-30] SOLE 0 13,299
Farther Finance Advisors LLC [2026-06-30] SOLE 0 4,260
IFP Advisors LLC [2026-06-30] SOLE 2,000 2,000
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