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Who

John P. Miller

Director

Company insider

Files Form 4 as: Interim CFO, Capstone Energy Plus; Director, Spruce Power Holding; CEO and President, Power Solutions International.

In numbers

Trades disclosed
18
Buys
4
Sells
0
Bought
$141K
Sold
$0
Companies
3
Companies where not an officer
1
First trade
15 Jun 2017
Last trade
1 Sep 2026
Last filed
3 Sep 2026

Companies traded

Where they are an officer
CEPL Capstone Energy PlusDirector, Officer · Machinery · last 1 Sep 20261 buy · 0 sells
PSIX Power Solutions InternationalOfficer · Machinery · last 31 May 20190 buys · 0 sells
Everywhere else they filed: board seats, 10% stakes, other companies
SPRU Spruce Power HoldingDirector · Electric Utilities & IPPs · last 24 Jun 20253 buys · 0 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
01Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
1 Sep 2026filed 3 Sep 2026CEPL Capstone Energy PlusMachinerySEC FORM 4 Code A—5,357 at $0.00filing
1 Sep 2026filed 3 Sep 2026CEPL Capstone Energy PlusMachinerySEC FORM 4 Code A—5,357 at $0.00filing
25 Nov 2025filed 25 Nov 2025CEPL Capstone Energy PlusMachinerySEC FORM 4 Bought$50K25,000 at $2.00filing
12 Aug 2025filed 13 Aug 2025CEPL Capstone Energy PlusMachinerySEC FORM 4 Code A—4,149 at $0.00filing
24 Jun 2025filed 6 Feb 2026SPRU Spruce Power HoldingElectric Utilities & IPPsSEC FORM 4 Code A—75,000 at $0.00filing
24 Jun 2025filed 6 Feb 2026SPRU Spruce Power HoldingElectric Utilities & IPPsSEC FORM 4 Code A—75,000 at $0.00filing
12 Feb 2025filed 14 Feb 2025CEPL Capstone Energy PlusMachinerySEC FORM 4 Code A—12,658 at $0.00filing
2 Dec 2024filed 4 Dec 2024SPRU Spruce Power HoldingElectric Utilities & IPPsSEC FORM 4 Bought$52K20,000 at $2.62filing
12 Aug 2024filed 27 Mar 2025SPRU Spruce Power HoldingElectric Utilities & IPPsSEC FORM 4 Code A—48,232 at $0.00filing
26 Feb 2024filed 26 Feb 2024CEPL Capstone Energy PlusMachinerySEC FORM 4 Code A—10,000 at $0.00filing
25 May 2023filed 30 May 2023SPRU Spruce Power HoldingElectric Utilities & IPPsSEC FORM 4 Code A—202,812 at $0.00filing
18 May 2023filed 19 May 2023SPRU Spruce Power HoldingElectric Utilities & IPPsSEC FORM 4 Bought$17K20,000 at $0.83filing
15 Sep 2022filed 16 Sep 2022SPRU Spruce Power HoldingElectric Utilities & IPPsSEC FORM 4 Bought$22K20,000 at $1.11filing
4 May 2022filed 6 May 2022SPRU Spruce Power HoldingElectric Utilities & IPPsSEC FORM 4 Code A—241,935 at $0.00filing
31 May 2019filed 4 Jun 2019PSIX Power Solutions InternationalMachinerySEC FORM 4 Code F$65K6,713 at $9.75filing
31 Mar 2019filed 14 May 2019PSIX Power Solutions InternationalMachinerySEC FORM 4 Code F$62K8,281 at $7.49filing
10 Nov 2017filed 14 Nov 2017PSIX Power Solutions InternationalMachinerySEC FORM 4 Code A—55,000 at $0.00filing
15 Jun 2017filed 22 Jun 2017PSIX Power Solutions InternationalMachinerySEC FORM 4 Code A—36,000 at $0.00filing

News

No headline names them, or the companies they trade most, lately.

Sectors

Utilities3
Industrials1

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

Related people

Vincent J. CaninoPresident & CEO · President & CEO at Capstone Green Energy Holdings, filing Form 4 there in the last year
Ping FuDirector · Director at Capstone Energy Plus, filing Form 4 there in the last year
Christopher J. CloseDirector · Director at Capstone Green Energy Holdings, filing Form 4 there in the last year
Denise WilsonDirector · Director at Capstone Energy Plus, filing Form 4 there in the last year
Robert F. PowelsonDirector · Director at Capstone Green Energy Holdings, filing Form 4 there in the last year
STEEL PARTNERS HOLDINGS L.P.10% owner · Also traded SPRU in the last 90 days