Security key
185064201
- Security type / class
- Equity / COM NEW
- Total 13F shares
- 422,515
- Total 13F value
- $1,551,856
- Share change
- +24,024
- SEC-reported price per share
- $3.67
- Number of holders
- 25
- Value change
- +$80,128
- Number of buys
- 9
- Number of sells
- 2
Report period
Q2 2026
Institutions
25
Top holders
10
CLIR full security history
Ownership snapshot
Full 13F holder table
ClearSign Technologies Corp SEC filings
ClearSign Technologies Corp company facts
Broader feeds
Ownership snapshot
Top reported holders of CLIR - ClearSign Technologies Corp - COM NEW (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
clirSPV LLC
Disclosed value leader
Robert T. Hoffman Sr.
Comparable rows
2/15
Latest evidence
30 Jun 2026
13D/G
3/4/5
13F
Lead comparable stake: 4.3%
13 rows are not safely comparable across share classes.
13D/G row: clirSPV LLC
Showing 1-6 of 15 holder rows.
Quick read
clirSPV LLC leads the comparable SEC ownership view at 4.3%.
2 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens clirSPV LLC's linked filing trail.
Comparable ownership
Top 2
clirSPV LLC
4.3%
Colin J. Deller
0.46%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| clirSPV LLC |
13D/G
HOFFMAN Robert Thurston Sr
|
4.3%
|
$1,371,906
2,249,027 shares
|
$0 | 14 Feb 2025 |
| Colin J. Deller |
3/4/5
Chief Executive Officer, Director
|
0.46%
|
$155,492
31,466 shares
|
— | 26 Feb 2026 |
| Robert T. Hoffman Sr. |
3/4/5
10%+ Owner
|
—
mixed-class rows
|
$17,451,117
24,795,027 shares
mixed-class rows
|
— | 24 Jun 2024 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13F
Company
|
—
class O/S missing
|
$459,670
105,429 shares
|
— | 31 Mar 2026 |
| Anthony DiGiandomenico |
3/4/5
Director
|
—
mixed-class rows
|
$332,131
549,073 shares
mixed-class rows
|
— | 30 Jun 2026 |
| Judith S. Schrecker |
3/4/5
Director
|
—
class O/S missing
|
$308,297
431,957 shares
|
— | 01 Jul 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q2 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
25
Shares
422,515
Rows available
25
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q2 2026 vs Q1 2026 Across Filers
Q1 2026 holders
20
Q2 2026 holders
25
Holder diff
5
| Investor | Q1 2026 Shares | Q2 2026 Shares | Share Diff | Share Chg % | Q1 2026 value | Q2 2026 value | Value change | Value Chg % |
|---|