Clearsign Combustion Corp

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Clearsign Combustion Corp
TickerCLIR
CIK #0001434524
CUSIP185064102
SectorLife Sciences - Industrial Instruments For Measurement, Display, And Control
Address12870 Interurban Avenue South, Seattle, WA 98168
Source [EDGAR]
Reg D Offering (Form D) Filed Raised Terms
Clearsign Technologies Corp 2024-07-09 4.3 M Exemption: 506(b) · Remaining: $7,391,554 · Duration: One year or less · Revenue: Decline to Disclose
Clearsign Combustion Corp 2018-07-23 11.7 M Exemption: 506(b) · Minimum: $11,730,472 · Duration: One year or less · Revenue: Decline to Disclose
CIK Filing 2011 - 2026
[0001434524] 10-K
[0001434524] 10-Q
[0001434524] 3
[0001434524] 4
[0001434524] 5
[0001434524] 8-K
[0001434524] D
[0001434524] SC 13D
[0001434524] SC 13G
Form 13D/13G Filer Form 13D/13G Subject Filed % Owned
Pasquesi John M Clearsign Technologies Corp [2025-04-09] 0.0
Simmons James M Clearsign Combustion Corp [2019-01-18] 6.2
Clirspv LLC Clearsign Combustion Corp [2018-07-30] 19.9
BD & DBG Living Trust Clearsign Combustion Corp [2013-01-24] 11.9
[2013-01-15] None
Marlett Christopher A Clearsign Combustion Corp [2012-05-01] 14.2
Form 3/4/5 Filer 2011 - 2026
Silva Gil Todd
ClearSign Technologies Corp
Digiandomenico Anthony
Basenese Lou
Hinds Brent
Deller Colin James
Maley David M
de Lacy Catharine
Schrecker Judith S
Pasquesi John M
HOFFMAN Robert Thurston Sr
Princeton Opportunity Management LLC
GPclirSPV LLC
clirSPV LLC
DiElsi Gary J
Meline Susanne
Pate Bruce Alan
Fike Brian Grant
Bell LON E
Sock Stephen Michael
Kendrick Donald W
Simmons James M
Isaacson Scott P
Ott Jeffrey L
Ruiz Roberto
Pirnat Stephen E
Lee Andrew U
Colannino Joseph
Harmon James N
BD & DBG Living Trust
Goodson David B
Osler Geoffrey D
Rutkowski Richard F
Marlett Christopher A
Insider Transaction (Form 3/4/5) Date Action Shares Price Value ($)
Silva Gil Todd
Common Stock
2026-03-17 Buy 2,000 $4.20 8,400
Silva Gil Todd
Common Stock
2026-03-16 Buy 2,000 $4.36 8,720
Deller Colin James
Common Stock
2026-02-26 Tax withheld 105,022 $0.56 58,812
Hinds Brent
Common Stock
2026-02-26 Grant 56,645 $0.00
Deller Colin James
Common Stock
2026-02-26 Grant 210,043 $0.00
Hinds Brent
Common Stock
2026-02-26 Tax withheld 20,761 $0.56 11,626
Hinds Brent
Restricted Stock Unit · derivative
2026-02-26 Grant 47,009 $0.00
Hinds Brent
Restricted Stock Unit · derivative
2026-02-22 Option exercise 7,547 $0.00
Hinds Brent
Common Stock
2026-02-22 Tax withheld 2,765 $0.59 1,631
Hinds Brent
Common Stock
2026-02-22 Option exercise 7,547
Hinds Brent
Restricted Stock Unit · derivative
2026-02-20 Option exercise 9,315 $0.00
Hinds Brent
Common Stock
2026-02-20 Option exercise 9,315
Hinds Brent
Common Stock
2026-02-20 Tax withheld 3,413 $0.59 2,014
Hinds Brent
Common Stock
2026-02-02 Tax withheld 3,711 $0.60 2,227
Hinds Brent
Restricted Stock Unit · derivative
2026-02-02 Option exercise 10,127 $0.00
Hinds Brent
Common Stock
2026-02-02 Option exercise 10,127
Basenese Lou
Restricted Stock Units · derivative
2025-10-01 Grant 24,621 $0.00
Silva Gil Todd
Restricted Stock Units · derivative
2025-10-01 Grant 26,830 $0.00
Maley David M
Restricted Stock Units · derivative
2025-07-01 Grant 9,452 $0.00
Basenese Lou
Restricted Stock Units · derivative
2025-07-01 Grant 34,722 $0.00
showing 20 of 200 most recent transactions
13F Ownership Over TimeHoldersShares Held
2026-03-31 21 407,432
2025-12-31 38 4,454,660
2025-09-30 39 4,232,793
2025-06-30 38 4,521,438
2025-03-31 39 4,094,343
2024-12-31 32 3,346,803
2024-09-30 28 3,142,087
2024-06-30 30 3,143,490
2024-03-31 28 2,985,507
2023-12-31 27 2,756,901
2023-09-30 30 2,836,326
2023-06-30 29 2,707,735
Form 13F Holdings
Firm Period DFND Voting Shares
Gleason Group Inc [2026-06-30] SOLE 0 1,802
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