# ClearSign Technologies Corp: filings

CLIR · Nasdaq · CIK 1434524 · [Technology](/sectors/technology.md) · fiscal year ends Dec 31

Pages: [Overview](/companies/clir.md) · [Financials](/companies/clir/financials.md) · [Filings](/companies/clir/filings.md) · [Insiders](/companies/clir/insiders.md)

## Reports and events: 302 filings

Newest first, by EDGAR acceptance time (Eastern). Filter with ?form= one of: `periodic`, `8-K`, `10-K`, `10-Q`, `4`, `proxy`, `13dg`, `all`, or any form this company filed (4 302, 8-K 188, 10-Q 44, 3 33, 424B5 15, DEF 14A 15, UPLOAD 15, 10-K 14, SC 13D/A 14, 4/A 13, CORRESP 12, EFFECT 11, S-8 10, DEFA14A 9, S-1/A 8, 424B3 7, 5 7, S-3 7, D 6, 8-K/A 5, 10-K/A 4, ARS 4, PRE 14A 4, S-1 4, S-8 POS 4, 424B2 3, CERTNAS 3, SC 13D 3, 10-Q/A 2, 424B4 2, 8-A12B 2, 8-A12B/A 2, PREC14A 2, S-3/A 2, SC 13G 2, SC 13G/A 2, 25-NSE 1, 424B1 1, D/A 1, DEFR14A 1, FWP 1, NT 10-Q 1, POS AM 1, PREN14A 1, PRRN14A 1, RW 1, SCHEDULE 13D/A 1, SCHEDULE 13G 1, SCHEDULE 13G/A 1).

| Filed | Accepted | Form | What it is | Accession |
| --- | --- | --- | --- | --- |
| 2026-09-14 | 12:45 ET | [8-K](/filings/0001104659-26-107294.md) | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001104659-26-107294 |
| 2026-08-20 | 20:15 ET | [8-K](/filings/0001104659-26-099235.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001104659-26-099235 |
| 2026-08-14 | 13:00 ET | [10-Q](/filings/0001104659-26-096539.md) | Quarterly report, period 2026-06-30 | 0001104659-26-096539 |
| 2026-08-11 | 11:45 ET | [8-K](/filings/0001104659-26-093758.md) | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001104659-26-093758 |
| 2026-07-23 | 12:45 ET | [8-K](/filings/0001104659-26-086099.md) | 1.01 Entry into a material agreement; 3.02 Unregistered sale of equity; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001104659-26-086099 |
| 2026-07-06 | 20:06 ET | [8-K](/filings/0001104659-26-080744.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001104659-26-080744 |
| 2026-06-18 | 20:15 ET | [8-K](/filings/0001104659-26-075734.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001104659-26-075734 |
| 2026-06-09 | 20:30 ET | [8-K](/filings/0001104659-26-071865.md) | 5.07 Shareholder vote results; 9.01 Financial statements and exhibits | 0001104659-26-071865 |
| 2026-06-01 | 12:30 ET | [8-K](/filings/0001104659-26-068614.md) | 1.01 Entry into a material agreement; 8.01 Other events; 9.01 Financial statements and exhibits | 0001104659-26-068614 |
| 2026-05-28 | 20:19 ET | [8-K](/filings/0001104659-26-067517.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001104659-26-067517 |
| 2026-05-21 | 20:30 ET | [8-K](/filings/0001104659-26-065175.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001104659-26-065175 |
| 2026-05-15 | 13:20 ET | [10-Q](/filings/0001104659-26-061940.md) | Quarterly report, period 2026-03-31 | 0001104659-26-061940 |
| 2026-04-28 | 15:09 ET | [DEF 14A](/filings/0001104659-26-049883.md) | Proxy statement, period 2026-06-08 | 0001104659-26-049883 |
| 2026-04-10 | 20:15 ET | [8-K](/filings/0001104659-26-042017.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001104659-26-042017 |
| 2026-03-31 | 20:05 ET | [10-K](/filings/0001104659-26-037699.md) | Annual report, period 2025-12-31 | 0001104659-26-037699 |
| 2026-03-30 | 21:29 ET | [8-K](/filings/0001104659-26-036808.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001104659-26-036808 |
| 2026-03-10 | 20:20 ET | [8-K](/filings/0001104659-26-025867.md) | 3.03 Change to security holders’ rights; 5.03 Amendment to articles or bylaws; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001104659-26-025867 |
| 2026-03-04 | 22:00 ET | [8-K](/filings/0001104659-26-023536.md) | 5.07 Shareholder vote results; 5.08 Item not in the standard list; 9.01 Financial statements and exhibits | 0001104659-26-023536 |
| 2026-02-25 | 22:15 ET | [8-K](/filings/0001104659-26-019768.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001104659-26-019768 |
| 2026-02-02 | 21:05 ET | [DEF 14A](/filings/0001104659-26-009202.md) | Proxy statement, period 2026-02-26 | 0001104659-26-009202 |
| 2026-01-07 | 21:05 ET | [8-K](/filings/0001104659-26-001752.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001104659-26-001752 |
| 2025-12-08 | 21:30 ET | [8-K](/filings/0001104659-25-119321.md) | 7.01 Regulation FD disclosure | 0001104659-25-119321 |
| 2025-11-21 | 21:05 ET | [8-K](/filings/0001104659-25-114991.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001104659-25-114991 |
| 2025-11-17 | 22:05 ET | [8-K](/filings/0001104659-25-113241.md) | 5.03 Amendment to articles or bylaws; 8.01 Other events; 9.01 Financial statements and exhibits | 0001104659-25-113241 |
| 2025-11-14 | 21:06 ET | [10-Q](/filings/0001104659-25-112472.md) | Quarterly report, period 2025-09-30 | 0001104659-25-112472 |
| 2025-09-30 | 20:05 ET | [8-K](/filings/0001104659-25-095017.md) | 3.01 Delisting notice; 9.01 Financial statements and exhibits | 0001104659-25-095017 |
| 2025-08-29 | 20:05 ET | [8-K](/filings/0001104659-25-085648.md) | 8.01 Other events | 0001104659-25-085648 |
| 2025-08-20 | 20:30 ET | [S-1/A](/filings/0001104659-25-080929.md) | Registration statement, amended | 0001104659-25-080929 |
| 2025-08-15 | 20:31 ET | [8-K](/filings/0001104659-25-079277.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001104659-25-079277 |
| 2025-08-14 | 20:06 ET | [10-Q](/filings/0001558370-25-011555.md) | Quarterly report, period 2025-06-30 | 0001558370-25-011555 |
| 2025-08-12 | 21:29 ET | [S-1](/filings/0001104659-25-076944.md) | Registration statement | 0001104659-25-076944 |
| 2025-08-08 | 20:20 ET | [8-K](/filings/0001104659-25-075708.md) | 3.01 Delisting notice; 5.02 Departure or appointment of officers or directors; 8.01 Other events; 9.01 Financial statements and exhibits | 0001104659-25-075708 |
| 2025-07-28 | 20:19 ET | [8-K](/filings/0001104659-25-071166.md) | 5.07 Shareholder vote results | 0001104659-25-071166 |
| 2025-07-18 | 10:02 ET | [8-K](/filings/0001104659-25-068797.md) | 1.01 Entry into a material agreement; 8.01 Other events; 9.01 Financial statements and exhibits | 0001104659-25-068797 |
| 2025-07-11 | 21:15 ET | [8-K](/filings/0001104659-25-067452.md) | 8.01 Other events | 0001104659-25-067452 |
| 2025-06-13 | 20:05 ET | [DEF 14A](/filings/0001558370-25-008616.md) | Proxy statement, period 2025-07-25 | 0001558370-25-008616 |
| 2025-05-28 | 21:20 ET | [10-K/A](/filings/0001104659-25-053646.md) | Annual report, amended, period 2024-12-31 | 0001104659-25-053646 |
| 2025-05-27 | 20:20 ET | [8-K](/filings/0001104659-25-052998.md) | 1.01 Entry into a material agreement; 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001104659-25-052998 |
| 2025-05-23 | 13:25 ET | [8-K](/filings/0001104659-25-052251.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001104659-25-052251 |
| 2025-05-15 | 20:05 ET | [10-Q](/filings/0001558370-25-007875.md) | Quarterly report, period 2025-03-31 | 0001558370-25-007875 |
| 2025-04-04 | 12:00 ET | [8-K](/filings/0001104659-25-031996.md) | 2.02 Results of operations; 3.01 Delisting notice; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001104659-25-031996 |
| 2025-03-31 | 20:10 ET | [10-K](/filings/0001558370-25-004155.md) | Annual report, period 2024-12-31 | 0001558370-25-004155 |
| 2025-02-19 | 22:05 ET | [SCHEDULE 13D/A](/filings/0001014108-25-000018.md) | Ownership report, active investor, amended | 0001014108-25-000018 |
| 2024-12-09 | 13:46 ET | [8-K](/filings/0001104659-24-126554.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001104659-24-126554 |
| 2024-11-21 | 22:05 ET | [8-K](/filings/0001104659-24-121607.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001104659-24-121607 |
| 2024-11-14 | 21:38 ET | [10-Q](/filings/0001558370-24-015739.md) | Quarterly report, period 2024-09-30 | 0001558370-24-015739 |
| 2024-11-07 | 21:31 ET | [10-K/A](/filings/0001558370-24-014881.md) | Annual report, amended, period 2023-12-31 | 0001558370-24-014881 |
| 2024-10-30 | 21:00 ET | [8-K](/filings/0001104659-24-112653.md) | 3.01 Delisting notice; 9.01 Financial statements and exhibits | 0001104659-24-112653 |
| 2024-10-01 | 21:25 ET | [8-K](/filings/0001104659-24-105025.md) | 2.05 Exit or disposal costs | 0001104659-24-105025 |
| 2024-08-23 | 21:00 ET | [8-K/A](/filings/0001104659-24-092489.md) | 5.07 Shareholder vote results; 9.01 Financial statements and exhibits | 0001104659-24-092489 |

Page 1 of 7. [Older](/companies/clir/filings.md?page=2)
Source: SEC EDGAR, the company’s filing index. Last ingested by Listed: Oct 24, 2026, 15:08 ET. No prices; not investment advice.