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CLIR CLEARSIGN TECHNOLOGIES CORP

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COM NEW (common), issuer CIK 1434524

18 managers (20 13F filers) reported a position in CLIR shares at 2026-03-31, 398,491 shares in all. 17 filers opened a position and 0 filers sold out during the quarter.

Managers
18
13F filers
20
New
17
Added
0
Reduced
0
Sold out
0
Shares held by filers
398,491

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
VANGUARD GROUP INCgroup of 3 filers holding130,239$568KnewTimeline
SIMON QUICK ADVISORS, LLC60,314$263K0.01%new13F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC57,683$252K<0.01%new13F-HRTimelineGroup
Cambridge Investment Research Advisors,…44,300$193K<0.01%new13F-HRTimeline
Beacon Pointe Advisors, LLC27,173$118K<0.01%new13F-HRTimeline
BlackRock, Inc.in group BlackRock, Inc.19,503$85K<0.01%new13F-HRTimelineGroup
HighTower Advisors, LLC12,680$55.3K<0.01%new13F-HRTimeline
Creative Planningin group Creative Planning12,355$53.9K<0.01%new13F-HRTimelineGroup
DDD Partners, LLC12,000$52.3K<0.01%new13F-HRTimeline
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…8,120$35.4K<0.01%new13F-HRTimelineGroup
NORTHWESTERN MUTUAL WEALTH MANAGEMENT COin group NORTHWESTERN MUTUAL INVESTMEN…7,172$31.3K<0.01%new13F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN2,125$9.27K<0.01%new13F-HR/ATimelineGroup
Gleason Group, Inc.1,802$7.86K<0.01%new13F-HRTimeline
Centerpoint Advisors, LLC1,560$7K<0.01%new13F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…1,045$4.56K<0.01%new13F-HRTimelineGroup
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\400$1.74K<0.01%new13F-HRTimelineGroup
SBI Securities Co., Ltd.11$48<0.01%new13F-HRTimeline
GROUP ONE TRADING LLC9$39<0.01%new13F-HRTimeline