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Who

Michael Toporek

Director

Company insider

Files Form 4 as: Director, Capstone Holding; Chief Executive Officer, Soluna Holdings; Director, TaoWeave.

Every Form 4 they filed

In numbers

Trades disclosed
93
Buys
4
Sells
12
Bought
$406K
Sold
$526K
Companies
3
Companies where not an officer
2
First trade
10 Jan 2006
Last trade
7 Aug 2026
Last filed
11 Aug 2026

Companies traded

Where they are an officer
SLNH Soluna HoldingsDirector, Officer, 10% owner · Crypto miners & infra · last 1 Jun 20263 buys · 12 sells
Everywhere else they filed: board seats, 10% stakes, other companies
CAPS Capstone HoldingDirector · Distributors & Wholesale · last 7 Aug 20261 buy · 0 sells
TWAV TaoWeaveDirector · IT Services & Consulting · last 28 Jul 20060 buys · 0 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
60Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
7 Aug 2026filed 11 Aug 2026CAPS Capstone HoldingDistributors & WholesaleSEC FORM 4 Code A—1,094,647filing
7 Aug 2026filed 11 Aug 2026CAPS Capstone HoldingDistributors & WholesaleSEC FORM 4 Code A—1,094,647filing
1 Jun 2026filed 3 Jun 2026SLNH Soluna HoldingsCrypto miners & infraSEC FORM 4 Code A—7,310,534 at $0.00filing
1 Jun 2026filed 3 Jun 2026SLNH Soluna HoldingsCrypto miners & infraSEC FORM 4 Code A—7,310,534 at $0.00filing
30 Mar 2026filed 24 Jul 2026CAPS Capstone HoldingDistributors & WholesaleSEC FORM 4 Code A—356,250filing
30 Mar 2026filed 24 Jul 2026CAPS Capstone HoldingDistributors & WholesaleSEC FORM 4 Code A—356,250filing
30 Mar 2026filed 1 Apr 2026CAPS Capstone Holdingoption or derivative · Distributors & WholesaleSEC FORM 4 Code A$231K356,250 at $0.649filing
30 Mar 2026filed 1 Apr 2026CAPS Capstone Holdingoption or derivative · Distributors & WholesaleSEC FORM 4 Code A$232K356,250 at $0.65filing
1 Dec 2025filed 3 Dec 2025SLNH Soluna HoldingsCrypto miners & infraSEC FORM 4 Code A—6,894,614 at $0.00filing
1 Sep 2025filed 2 Sep 2025SLNH Soluna HoldingsCrypto miners & infraSEC FORM 4 Code A—1,003,176 at $0.00filing
1 Jun 2025filed 3 Jun 2025SLNH Soluna HoldingsCrypto miners & infraSEC FORM 4 Code A—744,454 at $0.00filing
7 Mar 2025filed 24 Jul 2026CAPS Capstone HoldingDistributors & WholesaleSEC FORM 4 Bought$167K41,750 at $4.00filing
7 Mar 2025filed 24 Jul 2026CAPS Capstone HoldingDistributors & WholesaleSEC FORM 4 Bought$167K41,750 at $4.00filing
11 Dec 2024filed 12 Dec 2024SLNH Soluna HoldingsCrypto miners & infraSEC FORM 4 Sold$5,740574 at $10.00filing
10 Dec 2024filed 12 Dec 2024SLNH Soluna HoldingsCrypto miners & infraSEC FORM 4 Sold$1,040100 at $10.40filing
9 Dec 2024filed 9 Dec 2024SLNH Soluna HoldingsCrypto miners & infraSEC FORM 4 Sold$2,205208 at $10.60filing
5 Dec 2024filed 9 Dec 2024SLNH Soluna HoldingsCrypto miners & infraSEC FORM 4 Sold$13812 at $11.50filing
1 Dec 2024filed 3 Dec 2024SLNH Soluna HoldingsCrypto miners & infraSEC FORM 4 Code A—370,402 at $0.00filing
11 Nov 2024filed 12 Nov 2024SLNH Soluna HoldingsCrypto miners & infraSEC FORM 4 Sold$36K9,080 at $4.00filing
8 Nov 2024filed 12 Nov 2024SLNH Soluna HoldingsCrypto miners & infraSEC FORM 4 Sold$75K21,900 at $3.42filing

Sectors

Digital Assets15
Industrials1

Buys in green, sells in red, by the company’s sector.

Related people

Jessica L. ThomasChief Accounting Officer · Chief Accounting Officer at Soluna Holdings, filing Form 4 there in the last year
Mary Jennifer OReillyChief People Officer · Chief People Officer at Soluna Holdings, filing Form 4 there in the last year
William P. PhelanDirector · Director at Soluna Holdings, filing Form 4 there in the last year
John BelizaireChief Executive Officer · Chief Executive Officer at Soluna Holdings, filing Form 4 there in the last year
Michael PicchiChief Financial Officer · Chief Financial Officer at Soluna Holdings, filing Form 4 there in the last year