CLIR ClearSign Technologies (CLIR) Insider Trading, Ownership & Congress Trades
Industrials · Industrial instruments for measurement, display, and control · CIK 0001434524
SEC filings
House members buying, 1 year
0
STOCK Act, US House only, disclosed up to 45 days after the trade
Funds added, last quarter
10
13F, latest reported quarter
What the filings say about CLIR
Insiders, 180 days
+$1.8M net bought
1 buyer
ClearSign Technologies insider trades (Form 4)
Form 4 buys and sells (codes P and S). Grants, option exercises
and conversions excluded.
Over the last 180 days, ClearSign Technologies Corp insiders bought a net $1.8M of stock across 8 Form 4 purchases and sales, with 1 insider buying. Source: SEC Form 4 filings, as of 2026-10-28.
Insider
Filed
Shares
Value
Since filing
Context
- First Form 4 purchase or sale (code P or S) here by this insider on our record.
- The trade is 37.2% of the 1,343,477 shares held after it.
- No other insider bought within 30 days.
- 10 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Insider PASQUESI JOHN M bought about $1.8M of CLIR on Jul 22, 2026, the largest insider purchase at the company since 2024; 10 funds added in the latest 13F quarter.Context
- 2 earlier Form 4 trades (code P or S) here by this insider (2 buys), the last on Mar 17, 2026.
- -1.3% median (-1.3% mean) 90-day return after 2 previous buys.
- The trade is 20.0% of the 5,000 shares held after it.
- No other insider bought within 30 days.
- 10 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Director Silva Gil Todd bought about $5.3K of CLIR on Apr 23, 2026; 10 funds added in the latest 13F quarter.Context
- 2 earlier Form 4 trades (code P or S) here by this insider (2 buys), the last on Mar 17, 2026.
- -1.3% median (-1.3% mean) 90-day return after 2 previous buys.
- The trade is 16.7% of the 6,000 shares held after it.
- No other insider bought within 30 days.
- 10 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Director Silva Gil Todd bought about $5.2K of CLIR on Apr 23, 2026; 10 funds added in the latest 13F quarter.Context
- 1 earlier Form 4 trade (code P or S) here by this insider (1 buy), the last on Mar 16, 2026.
- The trade is 50.0% of the 4,000 shares held after it.
- No other insider bought within 30 days.
- 10 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Director Silva Gil Todd bought about $8.4K of CLIR on Mar 17, 2026; 10 funds added in the latest 13F quarter.Context
- First Form 4 purchase or sale (code P or S) here by this insider on our record.
- The trade is 100.0% of the 2,000 shares held after it.
- No other insider bought within 30 days.
- 10 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Director Silva Gil Todd bought about $8.7K of CLIR on Mar 16, 2026, the largest insider purchase at the company since 2024; 10 funds added in the latest 13F quarter.8 transactions on record
Since filing: total return from the first close after the filing to the latest close, dividend-adjusted. Not a forecast.
Context lines are counts over the filings above and returns from our own price history, never a price level. Not investment advice.
Seven facts, ranked against the sector ·
Rank is not a forecast
Insiders
net +$1.8M over 180 days
+$1.8M of it by a 10%+ holder
more than 99% of Industrials
Congress
no House purchase disclosed in the last 12 months
Funds
10 funds bought in last quarter
below 91% of Industrials
Revenue
+45.6% year over year
more than 93% of Industrials
Margin
-105.0% net margin
below 94% of Industrials
Buybacks
no share repurchases reported
Short interest
0.2% of the float short (float per yahoo 2026-10-26) · 1.0 days to cover · settled 2026-09-30
below 87% of Industrials
What changed in the last 30 days
Nothing new filed in the last 30 days
Watch CLIR
A free account keeps a watchlist and can send one email a day when insiders, funds or Congress file on the names in it. No password and no card.
The year, with the filings on it
Total return over 12 months. Each marker is a filing; hover or tap one for the detail.
-75.8%12M
Insider buy
Indexed to 100, dividend-adjusted, not a price chart.
When a name files heavily, the largest trades are drawn first.
Who owns CLIR: institutional holders (13F)
13F holdings, latest reported quarter
105,429 sh
$386.9K
60,314 sh
$221.4K
51,457 sh
$188.9K
27,173 sh
$99.7K
23,460 sh
$86.1K
Congress trades in CLIR
No Congress trades reported
No House member has disclosed a trade in this stock. See what Congress is buying.
Activist and 5% holders (13D/13G)
No 5%+ ownership filings
Nobody has filed for crossing 5%. That is a fact, not missing data.
CLIR planned insider sales (Form 144)
No planned-sale notices
No insider has filed to sell. Watch this after a run-up.
CLIR mutual fund holders (N-PORT)
Funds ranked by the share of their own portfolio in this stock (N-PORT).
Fidelity Extended Market Index Fund
$125.7K position · as of 2026-05-31
0.0%
Dimensional US Sustainability Core 1 ETF
$5.7K position · as of 2026-07-31
0.0%
VANGUARD EXTENDED MARKET INDEX FUND
$170.3K position · as of 2026-06-30
0.0%
Dimensional US Core Equity 1 ETF
$2.1K position · as of 2026-07-31
0.0%
Fidelity Nasdaq Composite Index Fund
$9.7K position · as of 2026-05-31
0.0%
Fidelity Total Market Index Fund
$47.4K position · as of 2026-05-31
0.0%
SEC N-PORT, monthly, about 60 days late · funds ≥ $10M ·
% is the share of the fund's own portfolio
Executive pay vs shareholder return
CEO pay, headline and as actually paid, against the company's
return and its chosen peers' (DEF 14A).
FY
CEO total
Actually paid
Other execs, avg
TSR
Peer TSR
2025
$547.3K
-$732.4K
$311.8K
+4%
n/a
2024
$475.3K
$675.9K
$304.8K
+169%
n/a
2023
$527.3K
$475.1K
$305.4K
+107%
n/a
2022
$472.0K
-$277.2K
$277.4K
n/a
n/a
Tagged by the company under SEC Item 402(v). Returns are
cumulative from the start of the disclosure period. Green where the company beat its own peer group.
Live price
Daily candles from TradingView, under their licence. No filings marked.
Why this name is on the desk
Insiders are net buyers of their own stock.
The record shows a net $1.8M bought by insiders over 180 days, 10 funds added last quarter. Each figure is a federal filing, dated the day it went public.
CLIR financials
Revenue growth
+45.6%
XBRL, annual
Net margin
-105.0%
Ratios from the company's XBRL filings, latest filings
Revenue, TTM
$5.5M
four quarters, 2025-07-01 to 2026-06-30
Revenue, TTM CLIR
| FY Dec 2025 | $5.2M |
| FY Dec 2024 | $3.6M |
| FY Dec 2023 | $2.4M |
| FY Dec 2022 | $374.0K |
| FY Dec 2021 | $607.0K |
| Jun 2026 | $560.0K |
| Mar 2026 | $191.0K |
| Dec 2025 | $3.7M |
| Sep 2025 | $1.0M |
| Jun 2025 | $133.0K |
| Mar 2025 | $401.0K |
| Dec 2024 | $590.0K |
| Sep 2024 | $1.9M |
At each fiscal year end
Single quarter
Net margin, TTM
-96.1%
net income over revenue, 2025-07-01 to 2026-06-30
Net margin, TTM CLIR
| FY Dec 2025 | -105.0% |
| FY Dec 2024 | -147.4% |
| FY Dec 2023 | -216.1% |
| FY Dec 2022 | n/a |
| FY Dec 2021 | n/a |
| Jun 2026 | -233.4% |
| Mar 2026 | n/a |
| Dec 2025 | -8.5% |
| Sep 2025 | -138.9% |
| Jun 2025 | n/a |
| Mar 2025 | -517.7% |
| Dec 2024 | -197.3% |
| Sep 2024 | -62.1% |
At each fiscal year end
Single quarter
Free cash flow, TTM
-$5.7M
operating cash flow minus capex, 2025-07-01 to 2026-06-30
Free cash flow, TTM CLIR
| FY Dec 2025 | -$4.7M |
| FY Dec 2024 | n/a |
| FY Dec 2023 | -$3.2M |
| FY Dec 2022 | -$5.0M |
| FY Dec 2021 | -$6.8M |
| Jun 2026 | n/a |
| Mar 2026 | n/a |
| Dec 2025 | -$1.3M |
| Sep 2025 | -$1.8M |
| Jun 2025 | -$511.0K |
| Mar 2025 | -$1.1M |
| Dec 2024 | -$436.0K |
| Sep 2024 | -$1.4M |
At each fiscal year end
Single quarter
Debt to equity
0.00x
long-term debt only, 2021-09-30 (57 months older than the period end); equity 2026-06-30
Debt to equity CLIR
| FY Dec 2025 | 0.00x |
| FY Dec 2024 | 0.00x |
| FY Dec 2023 | 0.00x |
| FY Dec 2022 | 0.00x |
| FY Dec 2021 | 0.00x |
| Jun 2026 | 0.00x |
| Mar 2026 | 0.00x |
| Dec 2025 | 0.00x |
| Sep 2025 | 0.00x |
| Jun 2025 | 0.00x |
| Mar 2025 | 0.00x |
| Dec 2024 | 0.00x |
| Sep 2024 | 0.00x |
At each fiscal year end
Trailing four quarters at each quarter end
Cash flow to debt
n/a
no debt to cover
Cash flow to debt CLIR
| FY Dec 2025 | n/a |
| FY Dec 2024 | n/a |
| FY Dec 2023 | n/a |
| FY Dec 2022 | n/a |
| FY Dec 2021 | n/a |
| Jun 2026 | n/a |
| Mar 2026 | n/a |
| Dec 2025 | n/a |
| Sep 2025 | n/a |
| Jun 2025 | n/a |
| Mar 2025 | n/a |
| Dec 2024 | n/a |
| Sep 2024 | n/a |
At each fiscal year end
Trailing four quarters at each quarter end
Return on equity
-51.7%
TTM net income over average of 2025-06-30 and 2026-06-30
Return on equity CLIR
| FY Dec 2025 | -47.2% |
| FY Dec 2024 | -55.9% |
| FY Dec 2023 | -70.5% |
| FY Dec 2022 | -64.6% |
| FY Dec 2021 | -88.6% |
| Jun 2026 | -51.7% |
| Mar 2026 | -57.1% |
| Dec 2025 | -47.2% |
| Sep 2025 | -53.1% |
| Jun 2025 | -46.2% |
| Mar 2025 | -76.0% |
| Dec 2024 | -55.9% |
| Sep 2024 | -49.0% |
At each fiscal year end
Trailing four quarters at each quarter end
Return on assets
-39.6%
TTM net income over average of 2025-06-30 and 2026-06-30
Return on assets CLIR
| FY Dec 2025 | -38.6% |
| FY Dec 2024 | -44.3% |
| FY Dec 2023 | -56.0% |
| FY Dec 2022 | -56.8% |
| FY Dec 2021 | -77.0% |
| Jun 2026 | -39.6% |
| Mar 2026 | -46.0% |
| Dec 2025 | -38.6% |
| Sep 2025 | -42.6% |
| Jun 2025 | -37.9% |
| Mar 2025 | -59.3% |
| Dec 2024 | -44.3% |
| Sep 2024 | -39.0% |
At each fiscal year end
Trailing four quarters at each quarter end
Return on invested capital
n/a
tax provision or pre-tax income not filed for the four quarters
Return on invested capital CLIR
| FY Dec 2025 | n/a |
| FY Dec 2024 | n/a |
| FY Dec 2023 | n/a |
| FY Dec 2022 | n/a |
| FY Dec 2021 | n/a |
| Jun 2026 | n/a |
| Mar 2026 | n/a |
| Dec 2025 | n/a |
| Sep 2025 | n/a |
| Jun 2025 | n/a |
| Mar 2025 | n/a |
| Dec 2024 | n/a |
| Sep 2024 | n/a |
At each fiscal year end
Trailing four quarters at each quarter end
Return on capital employed
-62.3%
operating income (EBIT proxy) over average of 2025-06-30 and 2026-06-30 minus current liabilities
Return on capital employed CLIR
| FY Dec 2025 | -56.8% |
| FY Dec 2024 | -67.4% |
| FY Dec 2023 | -79.0% |
| FY Dec 2022 | -66.5% |
| FY Dec 2021 | -87.2% |
| Jun 2026 | -62.3% |
| Mar 2026 | -67.6% |
| Dec 2025 | -56.8% |
| Sep 2025 | -62.3% |
| Jun 2025 | -54.2% |
| Mar 2025 | -89.4% |
| Dec 2024 | -67.4% |
| Sep 2024 | -56.7% |
At each fiscal year end
Trailing four quarters at each quarter end
P/E, trailing
n/a
trailing loss, a multiple of a loss is not meaningful
P/E, trailing CLIR
| FY Dec 2025 | n/a |
| FY Dec 2024 | n/a |
| FY Dec 2023 | n/a |
| FY Dec 2022 | n/a |
| FY Dec 2021 | n/a |
| Jun 2026 | n/a |
| Mar 2026 | n/a |
| Dec 2025 | n/a |
| Sep 2025 | n/a |
| Jun 2025 | n/a |
| Mar 2025 | n/a |
| Dec 2024 | n/a |
| Sep 2024 | n/a |
At each fiscal year end
Trailing four quarters at each quarter end
Enterprise value
$5.8M
market value at close 2026-10-26 on 2026-08-08 shares, plus long-term debt only, 2021-09-30 (57 months older than the period end), minus cash 2026-06-30
Enterprise value CLIR
| FY Dec 2025 | $289.2M |
| FY Dec 2024 | $709.3M |
| FY Dec 2023 | $422.4M |
| FY Dec 2022 | $198.9M |
| FY Dec 2021 | $428.1M |
| Jun 2026 | $10.0M |
| Mar 2026 | $15.8M |
| Dec 2025 | $289.2M |
| Sep 2025 | $393.2M |
| Jun 2025 | $281.2M |
| Mar 2025 | $363.9M |
| Dec 2024 | $709.3M |
| Sep 2024 | $412.3M |
At each fiscal year end
Trailing four quarters at each quarter end
FCF yield
-36.4%
TTM free cash flow over market value at close 2026-10-26
FCF yield CLIR
| FY Dec 2025 | -1.6% |
| FY Dec 2024 | n/a |
| FY Dec 2023 | -0.8% |
| FY Dec 2022 | -2.4% |
| FY Dec 2021 | -1.6% |
| Jun 2026 | -28.7% |
| Mar 2026 | -21.1% |
| Dec 2025 | -1.6% |
| Sep 2025 | -1.0% |
| Jun 2025 | -1.2% |
| Mar 2025 | n/a |
| Dec 2024 | n/a |
| Sep 2024 | n/a |
At each fiscal year end
Trailing four quarters at each quarter end
PEG, trailing
n/a
trailing loss, a multiple of a loss is not meaningful
PEG, trailing CLIR
| FY Dec 2025 | n/a |
| FY Dec 2024 | n/a |
| FY Dec 2023 | n/a |
| FY Dec 2022 | n/a |
| FY Dec 2021 | n/a |
| Jun 2026 | n/a |
| Mar 2026 | n/a |
| Dec 2025 | n/a |
| Sep 2025 | n/a |
| Jun 2025 | n/a |
| Mar 2025 | n/a |
| Dec 2024 | n/a |
| Sep 2024 | n/a |
At each fiscal year end
Trailing four quarters at each quarter end
Price as of 2026-10-26. Hover or tap a tile for its yearly and quarterly history.
Method
TTM is four consecutive fiscal quarters; Q4 is the year minus nine months when not filed. Returns use the average of opening and closing balances. EBIT is approximated by operating income. PEG uses trailing EPS growth.
Fundamentals
Annual figures from XBRL filings. Pick a past date to see them as known then.
| 2025-12 | 2024-12 | 2023-12 | 2022-12 | |
|---|---|---|---|---|
| Revenue | $5.2M | $3.6M | $2.4M | $374.0K |
| Gross profit | $1.4M | $1.1M | $817.0K | $116.0K |
| Operating income | -$6.7M | -$6.5M | -$6.0M | -$6.1M |
| Net income | -$5.5M | -$5.3M | -$5.2M | -$5.8M |
| EPS (diluted) | -0.99 | -1.08 | -0.13 | -0.16 |
| Operating cash flow | -$4.7M | -$4.4M | -$3.2M | -$5.0M |
| Cash | $9.2M | $14.0M | $5.7M | $6.5M |
SEC XBRL, fiscal years, as known on 2026-10-28
CLIR Stock Sonar score 6/7 axes
Find similar shapesCompareCLIR ranks highest on financial health (99th percentile) and growth (93rd), and lowest on institutional and government (8th), among Industrials peers.
6 of 7 axes scored. Each is a percentile against sector peers (all companies when the sector is thin); higher is better. An unscored axis is unmeasured, not low. How it is scored
CLIR filings, in plain words
Are ClearSign Technologies insiders buying or selling CLIR?
In the 180 days to 2026-10-28, ClearSign Technologies insiders were net buyers, a net $1.8M across purchases and sales reported on Form 4, by 1 buyer.
Read the full summary
In the 180 days to 2026-10-28, ClearSign Technologies insiders were net buyers of CLIR, a net $1.8M across purchases and sales reported on Form 4 by 1 buyer. Most of that figure, $1.8M, came from a holder of 10% or more rather than an officer or director. Each figure is counted from SEC and House filings as of 2026-10-28, dated the day the filing was made public.
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