CleanSpark (CLSK)
CleanSpark on one page: short interest, daily short volume, fails to deliver, planned sales, large holders, 13F holders, financials, earnings dates and insider trades. Listed on Nasdaq, classified by the SEC as finance services.
78.7M
Short interest
settlement 2026-10-15
4.6
Days to cover
+0.2 days vs prior
64.6%
Short share of volume
2026-10-28
2,572
Fails to deliver
settlement 2026-09-29
Tue 24 Nov
Next earnings
estimated date
-$435K
Insider flow, 90 days
0 buys, 5 sells
As of 2026-10-28.
Short interest
FINRA, twice a month. The newest 48 settlements in the table, 48 in the chart. JSONAs of 15 October 2026, short interest in CLSK is 78,749,690 shares, up 172,184 shares over the last month. Over the last 48 readings it ranged from 49,979,327 shares (15 November 2024) to 90,709,139 shares (15 April 2025). At the reported average volume of 17.2M shares a day that is 4.6 days to cover.
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| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-10-15 | 78,749,690 | +3.2% | 17,194,799 | 4.58 |
| 2026-09-30 | 76,290,817 | -2.9% | 17,263,246 | 4.42 |
| 2026-09-15 | 78,577,506 | +0.9% | 16,134,685 | 4.87 |
| 2026-08-31 | 77,855,812 | +5.7% | 19,586,187 | 3.98 |
| 2026-08-14 | 73,687,226 | -0.4% | 20,531,048 | 3.59 |
| 2026-07-31 | 73,978,672 | -5.2% | 22,747,626 | 3.25 |
| 2026-07-15 | 77,993,876 | -0.8% | 23,770,815 | 3.28 |
| 2026-06-30 | 78,632,173 | -7.2% | 19,933,348 | 3.94 |
| 2026-06-15 | 84,770,714 | +1.1% | 23,156,552 | 3.66 |
| 2026-05-29 | 83,872,674 | -0.2% | 26,665,864 | 3.15 |
| 2026-05-15 | 84,055,404 | -6.8% | 20,573,626 | 4.09 |
| 2026-04-30 | 90,239,487 | +6.9% | 20,385,212 | 4.43 |
| 2026-04-15 | 84,401,392 | -2.0% | 19,504,722 | 4.33 |
| 2026-03-31 | 86,135,886 | +1.8% | 19,610,654 | 4.39 |
| 2026-03-13 | 84,611,225 | -0.4% | 17,628,497 | 4.80 |
| 2026-02-27 | 84,931,425 | -0.6% | 18,851,865 | 4.51 |
| 2026-02-13 | 85,481,496 | +5.5% | 32,185,607 | 2.66 |
| 2026-01-30 | 81,015,067 | -1.7% | 32,699,359 | 2.48 |
| 2026-01-15 | 82,421,779 | +2.2% | 29,917,110 | 2.76 |
| 2025-12-31 | 80,625,101 | -0.7% | 19,860,579 | 4.06 |
| 2025-12-15 | 81,218,270 | -0.3% | 34,052,391 | 2.39 |
| 2025-11-28 | 81,484,585 | +4.6% | 37,834,788 | 2.15 |
| 2025-11-14 | 77,893,333 | +35.0% | 34,110,616 | 2.28 |
| 2025-10-31 | 57,701,144 | +0.4% | 30,107,532 | 1.92 |
| 2025-10-15 | 57,491,342 | +1.2% | 42,833,394 | 1.34 |
| 2025-09-30 | 56,784,833 | +2.1% | 38,987,298 | 1.46 |
| 2025-09-15 | 55,593,806 | +4.7% | 19,635,152 | 2.83 |
| 2025-08-29 | 53,092,473 | -3.8% | 15,550,209 | 3.41 |
| 2025-08-15 | 55,160,768 | -8.1% | 21,729,421 | 2.54 |
| 2025-07-31 | 60,026,840 | -7.2% | 20,929,557 | 2.87 |
| 2025-07-15 | 64,652,715 | -8.0% | 30,300,268 | 2.13 |
| 2025-06-30 | 70,279,525 | +0.7% | 31,160,162 | 2.26 |
| 2025-06-13 | 69,801,811 | -3.3% | 24,508,246 | 2.85 |
| 2025-05-30 | 72,209,811 | -3.8% | 29,912,592 | 2.41 |
| 2025-05-15 | 75,091,995 | -13.5% | 26,033,265 | 2.88 |
| 2025-04-30 | 86,812,993 | -4.3% | 24,815,267 | 3.50 |
| 2025-04-15 | 90,709,139 | +1.6% | 24,472,269 | 3.71 |
| 2025-03-31 | 89,295,767 | +10.7% | 29,478,149 | 3.03 |
| 2025-03-14 | 80,634,493 | +1.2% | 23,500,963 | 3.43 |
| 2025-02-28 | 79,696,257 | +6.4% | 22,144,845 | 3.60 |
| 2025-02-14 | 74,896,929 | +0.7% | 23,960,465 | 3.13 |
| 2025-01-31 | 74,360,972 | -2.4% | 23,856,186 | 3.12 |
| 2025-01-15 | 76,186,131 | +0.6% | 23,120,127 | 3.30 |
| 2024-12-31 | 75,708,610 | +26.1% | 30,388,310 | 2.49 |
| 2024-12-13 | 60,034,349 | +6.2% | 43,877,023 | 1.37 |
| 2024-11-29 | 56,558,529 | +13.2% | 40,659,967 | 1.39 |
| 2024-11-15 | 49,979,327 | -9.8% | 35,942,643 | 1.39 |
| 2024-10-31 | 55,378,196 | +9.9% | 35,091,737 | 1.58 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 28 October 2026, the short share of CLSK volume is 64.6%, up 3.9 points over the last five sessions. Over the last 30 readings it ranged from 38.6% (27 October 2026) to 70.9% (22 October 2026). The latest reading is 11.8 points above the 30-session average of 52.8%, on 9.6M shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-10-28 | 6.2M | 9.6M | 64.6% | 9,443 |
| 2026-10-27 | 2.1M | 5.3M | 38.6% | 4,024 |
| 2026-10-26 | 5.7M | 9.2M | 61.5% | 10,526 |
| 2026-10-23 | 5.6M | 8.6M | 65.3% | 146,416 |
| 2026-10-22 | 5.9M | 8.3M | 70.9% | 15,670 |
| 2026-10-21 | 6.2M | 10.3M | 60.7% | 39,860 |
| 2026-10-20 | 5.3M | 8.9M | 59.5% | 51,625 |
| 2026-10-19 | 6.5M | 10.2M | 63.4% | 634,429 |
| 2026-10-16 | 5.6M | 11.1M | 50.3% | 830,098 |
| 2026-10-15 | 7.0M | 13.3M | 52.5% | 1,057,604 |
| 2026-10-14 | 5.1M | 11.0M | 46.4% | 176,467 |
| 2026-10-13 | 4.0M | 7.9M | 50.6% | 16,192 |
| 2026-10-12 | 1.8M | 3.6M | 51.0% | 853 |
| 2026-10-09 | 2.7M | 5.0M | 53.8% | 452,360 |
| 2026-10-08 | 5.0M | 11.5M | 43.3% | 353,560 |
| 2026-10-07 | 3.4M | 6.7M | 51.1% | 16,050 |
| 2026-10-06 | 2.3M | 5.5M | 41.1% | 20,678 |
| 2026-10-05 | 3.7M | 6.3M | 58.0% | 301 |
| 2026-10-02 | 3.9M | 7.9M | 49.1% | 32,443 |
| 2026-10-01 | 4.5M | 8.7M | 51.2% | 12,450 |
| 2026-09-30 | 3.5M | 6.0M | 58.0% | 31,983 |
| 2026-09-29 | 2.8M | 5.3M | 52.0% | 4,867 |
| 2026-09-28 | 1.9M | 4.1M | 47.6% | 12,299 |
| 2026-09-25 | 3.5M | 7.4M | 47.1% | 3,195 |
| 2026-09-24 | 2.8M | 6.7M | 42.4% | 6,284 |
| 2026-09-23 | 4.1M | 7.7M | 53.1% | 7,359 |
| 2026-09-22 | 4.8M | 8.1M | 59.5% | 14,457 |
| 2026-09-21 | 4.8M | 9.1M | 52.5% | 22,005 |
| 2026-09-18 | 5.2M | 10.8M | 48.5% | 27,664 |
| 2026-09-17 | 3.0M | 7.4M | 40.4% | 10,904 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 29 September 2026, the fails-to-deliver balance in CLSK is 2,572 shares, down 87,048 shares over the last settlement date. Over the last 30 readings it ranged from 15 shares (5 August 2026) to 791,465 shares (9 September 2026). The latest reading sits at the bottom of that range.
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-09-29 | 2,572 | $13.34 | $34K |
| 2026-09-24 | 89,620 | $14.46 | $1.3M |
| 2026-09-23 | 71,859 | $15.14 | $1.1M |
| 2026-09-21 | 57,286 | $14.47 | $829K |
| 2026-09-17 | 6,852 | $12.79 | $88K |
| 2026-09-16 | 2,567 | $12.62 | $32K |
| 2026-09-15 | 42,844 | $13.27 | $569K |
| 2026-09-14 | 2,585 | $13.67 | $35K |
| 2026-09-09 | 791,465 | $13.48 | $10.7M |
| 2026-09-08 | 596,019 | $12.69 | $7.6M |
| 2026-09-04 | 387,670 | $12.58 | $4.9M |
| 2026-09-03 | 21,535 | $11.33 | $244K |
| 2026-09-01 | 54,775 | $11.62 | $636K |
| 2026-08-28 | 240,897 | $12.95 | $3.1M |
| 2026-08-27 | 4,127 | $12.18 | $50K |
| 2026-08-26 | 58,075 | $12.75 | $740K |
| 2026-08-25 | 82,041 | $11.93 | $979K |
| 2026-08-21 | 31 | $12.60 | $391 |
| 2026-08-18 | 74,754 | $12.40 | $927K |
| 2026-08-12 | 2,047 | $11.52 | $24K |
| 2026-08-07 | 127,798 | $12.75 | $1.6M |
| 2026-08-06 | 275,064 | $13.50 | $3.7M |
| 2026-08-05 | 15 | $14.17 | $213 |
| 2026-08-04 | 14,187 | $14.65 | $208K |
| 2026-08-03 | 1,499 | $13.76 | $21K |
| 2026-07-31 | 1,194 | $14.54 | $17K |
| 2026-07-29 | 234 | $13.48 | $3K |
| 2026-07-28 | 277,985 | $14.03 | $3.9M |
| 2026-07-27 | 52,873 | $14.52 | $768K |
| 2026-07-24 | 239,715 | $15.61 | $3.7M |
Insider trades
SEC Form 4, newest first. JSONInsiders at CLSK reported 5 open-market sells worth $435K in the last 90 days and no open-market buys. Latest filing: Garrison Scott Eugene (EVP, Chief Development Officer) on 2026-10-01.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-10-01 | Garrison Scott Eugene | EVP, Chief Development Officer | Tax withholding | 15K | $12.33 | $183K | 386K |
| 2026-10-01 | Monnig Taylor | CTO, COO | Sell | 3K | $12.33 | $41K | 337K |
| 2026-10-01 | Monnig Taylor | CTO, COO | Tax withholding | 13K | $12.33 | $162K | 340K |
| 2026-09-30 | Wood Thomas Leigh | Director | Exercise or conversion | 8K | $0.00 | $0 | 72K |
| 2026-09-30 | McNeill Larry | Director | Exercise or conversion | 8K | $0.00 | $0 | 319K |
| 2026-09-30 | Beynon Roger Paul | Director | Exercise or conversion | 8K | $0.00 | $0 | 156K |
| 2026-09-30 | Cavaleri Amanda | Director | Exercise or conversion | 8K | $0.00 | $0 | 138K |
| 2026-09-30 | Garrison Scott Eugene | EVP, Chief Development Officer | Exercise or conversion | 33K | $0.00 | $0 | 401K |
| 2026-09-30 | Monnig Taylor | CTO, COO | Exercise or conversion | 33K | $0.00 | $0 | 353K |
| 2026-09-08 | Carson Brian Jay | Chief Accounting Officer | Tax withholding | 17K | $13.34 | $229K | 141K |
| 2026-09-08 | Carson Brian Jay | Chief Accounting Officer | Tax withholding | 37K | $13.34 | $491K | 104K |
| 2026-09-08 | Monnig Taylor | CTO, COO | Sell | 12K | $13.34 | $160K | 320K |
| 2026-09-08 | Monnig Taylor | CTO, COO | Tax withholding | 47K | $13.34 | $632K | 332K |
| 2026-09-08 | Monnig Taylor | CTO, COO | Sell | 13K | $13.34 | $176K | 236K |
| 2026-09-08 | Monnig Taylor | CTO, COO | Tax withholding | 52K | $13.34 | $694K | 249K |
| 2026-09-08 | Garrison Scott Eugene | EVP, Chief Development Officer | Tax withholding | 54K | $13.34 | $715K | 367K |
| 2026-09-08 | Garrison Scott Eugene | EVP, Chief Development Officer | Tax withholding | 59K | $13.34 | $785K | 276K |
| 2026-09-08 | Vecchiarelli Gary Anthony | President, CFO | Tax withholding | 73K | $13.34 | $974K | 306K |
| 2026-09-08 | Vecchiarelli Gary Anthony | President, CFO | Tax withholding | 56K | $13.34 | $751K | 151K |
| 2026-09-08 | Schultz S. Matthew | CEO & Chairman | Tax withholding | 254K | $13.34 | $3.4M | 3.0M |
| 2026-09-08 | Schultz S. Matthew | CEO & Chairman | Tax withholding | 92K | $13.34 | $1.2M | 2.6M |
| 2026-09-04 | Carson Brian Jay | Chief Accounting Officer | Exercise or conversion | 44K | $0.00 | $0 | 158K |
| 2026-09-04 | Carson Brian Jay | Chief Accounting Officer | Tax withholding | 6K | $12.61 | $81K | 114K |
| 2026-09-04 | Carson Brian Jay | Chief Accounting Officer | Exercise or conversion | 16K | $0.00 | $0 | 120K |
| 2026-09-04 | Carson Brian Jay | Chief Accounting Officer | Exercise or conversion | 94K | $0.00 | $0 | 141K |
| 2026-09-04 | Monnig Taylor | CTO, COO | Exercise or conversion | 120K | $0.00 | $0 | 379K |
| 2026-09-04 | Monnig Taylor | CTO, COO | Sell | 5K | $12.61 | $57K | 259K |
| 2026-09-04 | Monnig Taylor | CTO, COO | Tax withholding | 18K | $12.61 | $224K | 263K |
| 2026-09-04 | Monnig Taylor | CTO, COO | Exercise or conversion | 45K | $0.00 | $0 | 281K |
| 2026-09-04 | Monnig Taylor | CTO, COO | Exercise or conversion | 132K | $0.00 | $0 | 301K |
| 2026-09-04 | Garrison Scott Eugene | EVP, Chief Development Officer | Exercise or conversion | 120K | $0.00 | $0 | 421K |
| 2026-09-04 | Garrison Scott Eugene | EVP, Chief Development Officer | Tax withholding | 21K | $12.61 | $265K | 301K |
| 2026-09-04 | Garrison Scott Eugene | EVP, Chief Development Officer | Exercise or conversion | 45K | $0.00 | $0 | 321K |
| 2026-09-04 | Garrison Scott Eugene | EVP, Chief Development Officer | Exercise or conversion | 132K | $0.00 | $0 | 335K |
| 2026-09-04 | Vecchiarelli Gary Anthony | President, CFO | Exercise or conversion | 186K | $0.00 | $0 | 379K |
| 2026-09-04 | Vecchiarelli Gary Anthony | President, CFO | Tax withholding | 27K | $12.61 | $345K | 193K |
| 2026-09-04 | Vecchiarelli Gary Anthony | President, CFO | Exercise or conversion | 70K | $0.00 | $0 | 221K |
| 2026-09-04 | Vecchiarelli Gary Anthony | President, CFO | Exercise or conversion | 143K | $0.00 | $0 | 207K |
| 2026-09-04 | Schultz S. Matthew | CEO & Chairman | Exercise or conversion | 576K | $0.00 | $0 | 3.3M |
| 2026-09-04 | Schultz S. Matthew | CEO & Chairman | Tax withholding | 95K | $12.61 | $1.2M | 2.7M |
| 2026-09-04 | Schultz S. Matthew | CEO & Chairman | Exercise or conversion | 216K | $0.00 | $0 | 2.8M |
| 2026-09-04 | Schultz S. Matthew | CEO & Chairman | Exercise or conversion | 209K | $0.00 | $0 | 2.7M |
| 2026-08-14 | Monnig Taylor | CTO, COO | Sell | 54 | $11.51 | $622 | 169K |
| 2026-08-14 | Monnig Taylor | CTO, COO | Tax withholding | 211 | $11.51 | $2K | 169K |
| 2026-08-14 | Garrison Scott Eugene | EVP, Chief Development Officer | Tax withholding | 1K | $11.51 | $14K | 202K |
| 2026-08-14 | Vecchiarelli Gary Anthony | President, CFO | Tax withholding | 632 | $11.51 | $7K | 64K |
| 2026-08-14 | Schultz S. Matthew | CEO & Chairman | Tax withholding | 9K | $11.51 | $104K | 2.5M |
| 2026-08-13 | Monnig Taylor | CTO, COO | Exercise or conversion | 536 | $0.00 | $0 | 169K |
| 2026-08-13 | Garrison Scott Eugene | EVP, Chief Development Officer | Exercise or conversion | 3K | $0.00 | $0 | 204K |
| 2026-08-13 | Vecchiarelli Gary Anthony | President, CFO | Exercise or conversion | 2K | $0.00 | $0 | 65K |
| 2026-08-13 | Schultz S. Matthew | CEO & Chairman | Exercise or conversion | 21K | $0.00 | $0 | 2.5M |
| 2026-06-30 | Cavaleri Amanda | Director | Exercise or conversion | 8K | $0.00 | $0 | 130K |
| 2026-06-30 | Wood Thomas Leigh | Director | Exercise or conversion | 8K | $0.00 | $0 | 64K |
| 2026-06-30 | McNeill Larry | Director | Exercise or conversion | 8K | $0.00 | $0 | 311K |
| 2026-06-30 | Beynon Roger Paul | Director | Exercise or conversion | 8K | $0.00 | $0 | 148K |
| 2026-05-14 | Monnig Taylor | CTO, COO | Tax withholding | 211 | $13.98 | $3K | 169K |
| 2026-05-14 | Garrison Scott Eugene | EVP, Chief Development Officer | Tax withholding | 1K | $13.98 | $17K | 201K |
| 2026-05-14 | Vecchiarelli Gary Anthony | President, CFO | Tax withholding | 632 | $13.98 | $9K | 63K |
| 2026-05-14 | Schultz S. Matthew | CEO & Chairman | Tax withholding | 9K | $13.98 | $126K | 2.5M |
| 2026-05-13 | Monnig Taylor | CTO, COO | Exercise or conversion | 535 | $0.00 | $0 | 169K |
| 2026-05-13 | Garrison Scott Eugene | EVP, Chief Development Officer | Exercise or conversion | 3K | $0.00 | $0 | 202K |
| 2026-05-13 | Vecchiarelli Gary Anthony | President, CFO | Exercise or conversion | 2K | $0.00 | $0 | 64K |
| 2026-05-13 | Schultz S. Matthew | CEO & Chairman | Exercise or conversion | 21K | $0.00 | $0 | 2.5M |
| 2026-03-31 | Cavaleri Amanda | Director | Exercise or conversion | 7K | $0.00 | $0 | 122K |
| 2026-03-31 | Wood Thomas Leigh | Director | Exercise or conversion | 7K | $0.00 | $0 | 56K |
| 2026-03-31 | McNeill Larry | Director | Exercise or conversion | 7K | $0.00 | $0 | 303K |
| 2026-03-31 | Beynon Roger Paul | Director | Exercise or conversion | 7K | $0.00 | $0 | 140K |
| 2026-02-18 | Carson Brian Jay | Chief Accounting Officer | Tax withholding | 6K | $9.25 | $60K | 47K |
| 2026-02-18 | Monnig Taylor | CTO, COO | Tax withholding | 211 | $9.23 | $2K | 169K |
| 2026-02-18 | Monnig Taylor | CTO, COO | Tax withholding | 18K | $9.25 | $164K | 169K |
| 2026-02-18 | Garrison Scott Eugene | EVP, Chief Development Officer | Tax withholding | 1K | $9.23 | $11K | 199K |
| 2026-02-18 | Garrison Scott Eugene | EVP, Chief Development Officer | Tax withholding | 20K | $9.25 | $186K | 201K |
| 2026-02-18 | Vecchiarelli Gary Anthony | President, CFO | Tax withholding | 632 | $9.23 | $6K | 662K |
| 2026-02-18 | Vecchiarelli Gary Anthony | President, CFO | Tax withholding | 27K | $9.25 | $254K | 663K |
| 2026-02-18 | Schultz S. Matthew | CEO & Chairman | Tax withholding | 9K | $9.23 | $83K | 2.5M |
| 2026-02-18 | Schultz S. Matthew | CEO & Chairman | Tax withholding | 95K | $9.25 | $880K | 2.5M |
| 2026-02-13 | Carson Brian Jay | Chief Accounting Officer | Exercise or conversion | 16K | $0.00 | $0 | 54K |
| 2026-02-13 | Monnig Taylor | CTO, COO | Exercise or conversion | 45K | $0.00 | $0 | 187K |
| 2026-02-13 | Monnig Taylor | CTO, COO | Exercise or conversion | 535 | $0.00 | $0 | 141K |
| 2026-02-13 | Garrison Scott Eugene | EVP, Chief Development Officer | Exercise or conversion | 45K | $0.00 | $0 | 221K |
| 2026-02-13 | Garrison Scott Eugene | EVP, Chief Development Officer | Exercise or conversion | 3K | $0.00 | $0 | 176K |
| 2026-02-13 | Vecchiarelli Gary Anthony | President, CFO | Exercise or conversion | 70K | $0.00 | $0 | 690K |
| 2026-02-13 | Vecchiarelli Gary Anthony | President, CFO | Exercise or conversion | 2K | $0.00 | $0 | 621K |
| 2026-02-13 | Schultz S. Matthew | CEO & Chairman | Exercise or conversion | 216K | $0.00 | $0 | 2.6M |
| 2026-02-13 | Schultz S. Matthew | CEO & Chairman | Exercise or conversion | 21K | $0.00 | $0 | 2.3M |
| 2025-12-31 | McNeill Larry | Director | Exercise or conversion | 7K | $0.00 | $0 | 296K |
| 2025-12-31 | Wood Thomas Leigh | Director | Exercise or conversion | 7K | $0.00 | $0 | 49K |
| 2025-12-31 | Cavaleri Amanda | Director | Exercise or conversion | 7K | $0.00 | $0 | 115K |
| 2025-12-31 | Beynon Roger Paul | Director | Exercise or conversion | 7K | $0.00 | $0 | 133K |
| 2025-12-23 | Wood Thomas Leigh | Director | Sell | 85K | $11.69 | $997K | 41K |
| 2025-12-05 | Schultz S. Matthew | CEO & Chairman | Tax withholding | 9K | $14.07 | $127K | 2.3M |
| 2025-12-05 | Vecchiarelli Gary Anthony | President, CFO | Tax withholding | 632 | $14.07 | $9K | 619K |
| 2025-12-05 | Garrison Scott Eugene | EVP, Chief Development Officer | Tax withholding | 1K | $14.07 | $17K | 173K |
| 2025-12-05 | Monnig Taylor | CTO, COO | Tax withholding | 211 | $14.07 | $3K | 141K |
| 2025-12-04 | Cavaleri Amanda | Director | Sell | 33K | $15.02 | $496K | 107K |
| 2025-12-03 | Wood Thomas Leigh | Director | Exercise or conversion | 9K | $0.00 | $0 | 127K |
| 2025-12-03 | McNeill Larry | Director | Exercise or conversion | 9K | $0.00 | $0 | 289K |
| 2025-12-03 | Schultz S. Matthew | CEO & Chairman | Exercise or conversion | 21K | $0.00 | $0 | 2.3M |
| 2025-12-03 | Vecchiarelli Gary Anthony | President, CFO | Exercise or conversion | 2K | $0.00 | $0 | 620K |
| 2025-12-03 | Garrison Scott Eugene | EVP, Chief Development Officer | Exercise or conversion | 3K | $0.00 | $0 | 174K |
Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.
Planned sales (Form 144)
Newest first. JSON27 Form 144 notices on file for CLSK worth $24.3M at the prices reported; 11 in the last 90 days worth $12.3M. Latest: Garrison Scott Eugene filed on 2026-10-01 to sell 14,854 shares ($191K) from 2026-10-01.
| Filed | Seller | Shares | Market value | Of outstanding | Sale from | Broker |
|---|---|---|---|---|---|---|
| 2026-10-01 | Garrison Scott EugeneOfficer | 15K | $191K | 0.006% | 2026-10-01 | Siebert Financial Corp. |
| 2026-10-01 | Monnig TaylorOfficer | 16K | $212K | 0.006% | 2026-10-01 | Siebert Financial Corp. |
| 2026-09-04 | Carson Brian JayOfficer | 60K | $761K | 0.023% | 2026-09-04 | Siebert Financial Corp. |
| 2026-09-04 | Monnig TaylorOfficer | 147K | $1.8M | 0.057% | 2026-09-04 | Siebert Financial Corp. |
| 2026-09-04 | Garrison Scott EugeneOfficer | 133K | $1.7M | 0.051% | 2026-09-04 | Siebert Financial Corp. |
| 2026-09-04 | Vecchiarelli Gary AnthonyOfficer | 157K | $2.0M | 0.061% | 2026-09-04 | Siebert Financial Corp. |
| 2026-09-04 | Schultz S. MatthewOfficer, Director | 441K | $5.5M | 0.171% | 2026-09-04 | Siebert Financial Corp. |
| 2026-08-14 | Monnig TaylorOfficer | 265 | $3K | 0.000% | 2026-08-14 | Siebert Financial Corp. |
| 2026-08-14 | Garrison Scott EugeneOfficer | 1K | $14K | 0.000% | 2026-08-14 | Siebert Financial Corp. |
| 2026-08-14 | Vecchiarelli Gary AnthonyOfficer | 632 | $7K | 0.000% | 2026-08-14 | Siebert Financial Corp. |
| 2026-08-14 | Schultz S. MatthewOfficer, Director | 9K | $104K | 0.004% | 2026-08-14 | Siebert Financial Corp. |
| 2026-05-14 | Monnig TaylorOfficer | 211 | $3K | 0.000% | 2026-05-14 | Siebert Financial Corp. |
| 2026-05-14 | Garrison Scott EugeneOfficer | 1K | $17K | 0.000% | 2026-05-14 | Siebert Financial Corp. |
| 2026-05-14 | Vecchiarelli Gary AnthonyOfficer | 632 | $8K | 0.000% | 2026-05-14 | Siebert Financial Corp. |
| 2026-05-14 | Schultz S. MatthewOfficer, Director | 9K | $120K | 0.004% | 2026-05-14 | Siebert Financial Corp. |
| 2026-02-18 | Carson Brian JayOfficer | 6K | $60K | 0.003% | 2026-02-18 | Siebert Financial Corp. |
| 2026-02-18 | Monnig TaylorOfficer | 18K | $167K | 0.007% | 2026-02-18 | Siebert Financial Corp. |
| 2026-02-18 | Garrison Scott EugeneOfficer | 21K | $198K | 0.008% | 2026-02-18 | Siebert Financial Corp. |
| 2026-02-18 | Vecchiarelli Gary AnthonyOfficer | 28K | $260K | 0.011% | 2026-02-18 | Siebert Financial Corp. |
| 2026-02-18 | Schultz S. MatthewOfficer, Director | 104K | $966K | 0.041% | 2026-02-18 | Siebert Financial Corp. |
| 2025-12-23 | Wood Thomas LeighDirector | 85K | $982K | 0.033% | 2025-12-23 | Siebert Financial Corp. |
| 2025-12-05 | Schultz S. MatthewOfficer, Director | 9K | $127K | 0.004% | 2025-12-05 | Siebert Financial Corp. |
| 2025-12-05 | Vecchiarelli Gary AnthonyOfficer | 632 | $9K | 0.000% | 2025-12-05 | Siebert Financial Corp. |
| 2025-12-05 | Garrison Scott EugeneOfficer | 1K | $17K | 0.000% | 2025-12-05 | Siebert Financial Corp. |
| 2025-12-05 | Monnig TaylorOfficer | 211 | $3K | 0.000% | 2025-12-05 | Siebert Financial Corp. |
| 2025-12-04 | Cavaleri AmandaDirector | 33K | $496K | 0.013% | 2025-12-04 | Siebert Financial Corp. |
| 2025-10-02 | Zachary BradfordFormer Affiliate | 583K | $8.5M | 0.207% | 2025-10-02 | J.P. Morgan Securities LLC |
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON4 holders report 5% or more of CLSK in their latest filing, all on Schedule 13G (passive). The largest reported stake is Vanguard Capital Management at 5.1% of the class (13,014,765 shares), filed 2026-04-29 for an event on 2026-03-31.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-10-19 | 13G/Ano. 1 | BANK OF NOVA SCOTIAnon-US institution | 10.3M | 3.9% | 2026-09-30 |
| 2026-07-17 | 13G | D. E. Shaw & Co., L.P.investment adviser, partnership | 12.9M | 5.0% | 2026-07-10 |
| 2026-07-17 | 13G | D. E. Shaw & Co., L.L.C.other entity | 12.9M | 5.0% | 2026-07-10 |
| 2026-07-17 | 13G | David E. Shawindividual | 12.9M | 5.0% | 2026-07-10 |
| 2026-07-14 | 13G/Ano. 1 | Dimensional Fund Advisors LPinvestment adviser | 9.6M | 3.8% | 2026-06-30 |
| 2026-04-29 | 13G | Vanguard Capital Managementinvestment adviser | 13.0M | 5.1% | 2026-03-31 |
| 2026-03-26 | 13G/Ano. 4 | The Vanguard Groupinvestment adviser | 0 | 0.0% | 2026-03-13 |
| 2026-02-13 | 13G/Ano. 1 | G1 Execution Services, LLCbroker-dealer, other entity | 12.4M | 4.8% | 2025-12-31 |
| 2026-02-13 | 13G/Ano. 1 | SIG Brokerage, LPbroker-dealer, partnership | 12.4M | 4.8% | 2025-12-31 |
| 2026-02-13 | 13G/Ano. 1 | Susquehanna Investment Groupbroker-dealer, partnership | 12.4M | 4.8% | 2025-12-31 |
| 2026-02-13 | 13G/Ano. 1 | Susquehanna Securities, LLCbroker-dealer, other entity | 12.4M | 4.8% | 2025-12-31 |
13F holders
Tracked managers holding CLSK at their latest 13F. JSON5 of the 30 tracked managers held CLSK at their latest 13F, $314.2M in total at quarter-end prices. D. E. Shaw & Co. is the largest at $163.8M (0.1% of its portfolio) as of 2026-06-30. Over the prior quarter 4 added shares and 1 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| D. E. Shaw & Co. | 2026-06-30 | 11.3M | $163.8M | 0.08% | +4.8M |
| Point72 Asset Management | 2026-06-30 | 6.0M | $86.9M | 0.10% | +4.4M |
| Millennium Management | 2026-06-30 | 2.6M | $37.6M | 0.01% | +2.3M |
| Citadel Advisors | 2026-06-30 | 1.3M | $18.4M | 0.00% | -843K |
| AQR Capital Management | 2026-06-30 | 518K | $7.5M | 0.00% | +424K |
Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.
Financials
SEC XBRL, as filed. JSONIn FY 2025 it generated -$461.0M of operating cash flow and spent $145.0M on buybacks. As of 2026-06-30, cash was $202.6M against $1.78B of debt.
- Cash
- $202.6M
- Debt
- $1.78B
- Equity
- $761.3M
- Total assets
- $2.70B
- Shares outstanding
- 256,817,073
Quarterly, last 8 quarters
| Quarter | Period end | Revenue | Net income | Margin | Diluted EPS |
|---|---|---|---|---|---|
| Q3 FY 2026 | 2026-06-30 | n/a | -$239.8M | n/a | n/a |
| Q2 FY 2026 | 2026-03-31 | n/a | -$378.3M | n/a | n/a |
| Q1 FY 2026 | 2025-12-31 | n/a | -$378.7M | n/a | n/a |
| Q4 FY 2025derived | 2025-09-30 | n/a | -$925K | n/a | n/a |
| Q3 FY 2025 | 2025-06-30 | n/a | $257.4M | n/a | n/a |
| Q2 FY 2025 | 2025-03-31 | n/a | -$138.8M | n/a | n/a |
| Q1 FY 2025 | 2024-12-31 | n/a | $246.8M | n/a | n/a |
| Q4 FY 2024derived | 2024-09-30 | $89.3M | -$62.2M | -69.6% | n/a |
Fiscal years, with buybacks and dividends
| Fiscal year | Ends | Revenue | Net income | Operating cash flow | Capex | Buybacks | Dividends |
|---|---|---|---|---|---|---|---|
| FY 2025 | 2025-09-30 | $766.3M | $364.5M | -$461.0M | $144.7M | $145.0M | n/a |
| FY 2024 | 2024-09-30 | $379.0M | -$145.8M | -$233.7M | $66.1M | $0 | n/a |
| FY 2023 | 2023-09-30 | $168.4M | -$138.1M | -$17.2M | $61.5M | $0 | n/a |
| FY 2022 | 2022-09-30 | $131.5M | -$57.3M | $73.5M | $19.3M | n/a | n/a |
| FY 2021 | 2021-09-30 | $39.3M | -$21.8M | -$24.0M | $139.2M | n/a | n/a |
Quarters are the three-month figures the company reports; a fourth quarter marked derived is the fiscal year less the three reported quarters, since companies report it only inside the 10-K. Fiscal years are the annual figures. Buybacks are the cash the company paid to repurchase its common stock in the year, not the amount authorized. Balance sheet lines are as of 2026-06-30; shares outstanding as of 2026-08-04 from the cover page.
What this page is
CleanSpark in the regulatory record
Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page puts those series for one ticker on one URL, with planned sales, large holders, 13F holders and financials beside them, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.
Each section has its own history table, a one-line summary of the latest figures and its own JSON and CSV links, and says when its source last updated.
This page follows CleanSpark (CLSK), SEC CIK 827876, listed on Nasdaq, classified by the SEC as finance services. The cross-market tables live on the short interest and insider transactions hubs.
Source and updates
- Short interest
- FINRA consolidated short interestSource: FINRA.Twice a month, about eight business days after settlement. Latest 2026-10-15.JSON and CSV
- Daily short volume
- FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-10-28.JSON and CSV
- Fails to deliver
- SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-09-29.JSON and CSV
- Planned sales
- SEC EDGAR Form 144Source: SEC.New notices appear shortly after the SEC posts them; a notice is filed on or before the sale. Latest 2026-10-01.JSON and CSV
- Large holders
- SEC EDGAR Schedule 13D and 13GSource: SEC.New filings appear shortly after the SEC posts them. A 13D is due within five business days of crossing 5%; a 13G follows the passive schedule. Latest 2026-10-19.JSON and CSV
- 13F holders
- SEC EDGAR Form 13F-HRSource: SEC.Quarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
- Financials
- SEC EDGAR 10-K and 10-Q filingsSource: SEC.Weekly; values are as filed in the 10-Q and 10-K. Latest 2026-06-30.JSON and CSV
- Earnings dates
- SEC EDGAR 8-K filings (Item 2.02)Source: SEC.Twice a day. Reported dates come from the company's 8-K filings; the next date is marked as an estimate until the 8-K arrives. Latest 2026-08-06.JSON and CSV
- Insider trades
- SEC EDGAR Form 4Source: SEC.New filings appear shortly after the SEC posts them; they're due two business days after the trade. Latest 2026-10-01.JSON and CSV
- Company record
- EDGAR filing index for CIK 827876Ticker, name and exchange from the SEC's company list, refreshed weekly.
- Rate limits
- 10 requests a minute without a key, 30 with a free key from a free account.
How to read it
- Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
- Insider buys next to a large short position are rare and stand out; insider sells next to one are common and mean little.
- Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.
Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.
Other companies the SEC classifies as finance services
Other company pages
Datasets
Frequently Asked Questions
How much of CLSK is sold short?
78,749,690 shares were held short at the 2026-10-15 settlement, 4.6 days of average volume. FINRA publishes the next count about eight business days after the 15th and the last business day of the month.
What is CLSK's daily short volume?
On 2026-10-28, 6,201,996 of the 9,596,273 CLSK shares reported to FINRA were sold short, 64.6% of the day's reported volume. Short volume is a flow for one day, not a position.
Does CLSK have fails to deliver?
The SEC's latest file shows 2,572 CLSK shares failed to deliver at settlement 2026-09-29. Fails are reported per settlement date and published twice a month with a lag.
Are CLSK insiders buying or selling?
Insiders at CLSK reported 5 open-market sells worth $435K in the last 90 days and no open-market buys. Latest filing: Garrison Scott Eugene (EVP, Chief Development Officer) on 2026-10-01.
Have CLSK insiders filed to sell?
27 Form 144 notices on file for CLSK worth $24.3M at the prices reported; 11 in the last 90 days worth $12.3M. Latest: Garrison Scott Eugene filed on 2026-10-01 to sell 14,854 shares ($191K) from 2026-10-01.
Who owns 5% or more of CLSK?
4 holders report 5% or more of CLSK in their latest filing, all on Schedule 13G (passive). The largest reported stake is Vanguard Capital Management at 5.1% of the class (13,014,765 shares), filed 2026-04-29 for an event on 2026-03-31.
What did CLSK report last quarter?
In FY 2025 it generated -$461.0M of operating cash flow and spent $145.0M on buybacks. As of 2026-06-30, cash was $202.6M against $1.78B of debt.
Which tracked 13F managers own CLSK?
5 of the 30 tracked 13F managers held CLSK shares at their latest filing, $314.2M in all. The largest: D. E. Shaw & Co. (11.3M shares, $163.8M), Steve Cohen's Point72 Asset Management (6.0M shares, $86.9M), Izzy Englander's Millennium Management (2.6M shares, $37.6M), Ken Griffin's Citadel Advisors (1.3M shares, $18.4M), Cliff Asness's AQR Capital Management (518K shares, $7.5M).
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.