Vault-13

CLEARSIGN TECHNOLOGIES CORP

COM · CUSIP 185064102

0 institutional holders -38 vs Q4 2025
—reported value*
0 new 0 added 0 reduced 37 sold out net sold ≈ $1.7m (-3.1m shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable.

Trends to Q1 2026

Institutional holders

Managers reporting a position, each quarter

02040Q3 22: 28Q4 22: 29Q1 23: 26Q2 23: 28Q3 23: 29Q4 23: 27Q1 24: 28Q2 24: 30Q3 24: 28Q4 24: 32Q1 25: 39Q2 25: 38Q3 25: 39Q4 25: 38Q1 26: 00Q3 22Q3 23Q3 24Q3 25Q1 26
Numbers
QuarterHolders
Q3 202228
Q4 202229
Q1 202326
Q2 202328
Q3 202329
Q4 202327
Q1 202428
Q2 202430
Q3 202428
Q4 202432
Q1 202539
Q2 202538
Q3 202539
Q4 202538
Q1 20260

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
40040Q2 24: 13 bought or addedQ2 24: 10 cut or sold outQ3 24: 7 bought or addedQ3 24: 9 cut or sold outQ3 24Q4 24: 12 bought or addedQ4 24: 6 cut or sold outQ1 25: 18 bought or addedQ1 25: 6 cut or sold outQ1 25Q2 25: 17 bought or addedQ2 25: 11 cut or sold outQ3 25: 11 bought or addedQ3 25: 16 cut or sold outQ3 25Q4 25: 13 bought or addedQ4 25: 13 cut or sold outQ1 26: 0 bought or addedQ1 26: 37 cut or sold outQ1 26
Numbers
QuarterBought or addedCut or sold out
Q2 20241310
Q3 202479
Q4 2024126
Q1 2025186
Q2 20251711
Q3 20251116
Q4 20251313
Q1 2026037

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$20k$40k$60kQ2 25 calls: $642Q2 25 puts: $0Q2 25P/C 0.00Q3 25 calls: $16.9kQ3 25 puts: $0Q3 25P/C 0.00Q4 25 calls: $52.7kQ4 25 puts: $7.7kQ4 25P/C 0.15Q1 26 calls: $0Q1 26 puts: $0Q1 26P/C —
Numbers
QuarterCallsPutsP/C
Q2 2025$642$00.00
Q3 2025$16.9k$00.00
Q4 2025$52.7k$7.7k0.15
Q1 2026$0$0—

Biggest buyers

None

Biggest sellers

SIMON QUICK ADVISORS, LLC Sold out -603,149-603.1k
GEODE CAPITAL MANAGEMENT, LLC Sold out -523,109-523.1k
Cambridge Investment Research Advisors, Inc. Sold out -443,000-443.0k
BlackRock, Inc. Sold out -199,304-199.3k
Creative Planning Sold out -136,053-136.1k
HighTower Advisors, LLC Sold out -126,809-126.8k
DDD Partners, LLC Sold out -120,000-120.0k
SUSQUEHANNA INTERNATIONAL GROUP, LLP Sold out -104,759-104.8k
STATE STREET CORP Sold out -88,989-89.0k
Rockefeller Capital Management L.P. Sold out -81,209-81.2k

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
PASQUESI JOHN M 13G · passive investor -0.1 pts · filed 2026-07-24 19.9% -0.1 pts 1.4m 2026-07-24

Holders, Q1 2026

#ManagerLocationShares Value% of their portfolioChangeShares change