Quick Answer
QUANTUM CORP /DE/ reported Shares Outstanding of 6.96 million shares for fiscal year 2025.
QUANTUM CORP /DE/ Shares Outstanding — Annual History
| Fiscal Year | Shares Outstanding | YoY Change |
|---|---|---|
| 2025 | 6.96M | +31.2% |
| 2024 | 5.31M | +10.6% |
| 2024 | 4.80M | +0.2% |
| 2024 | 4.79M | -95.0% |
| 2023 | 95.85M | +2.4% |
| 2023 | 93.57M | +0.5% |
| 2022 | 93.14M | +2.8% |
| 2022 | 90.61M | +49.9% |
| 2022 | 60.43M | +6.2% |
| 2021 | 56.91M | +42.6% |
| 2020 | 39.91M | +10.7% |
| 2019 | 36.04M | +1.4% |
| 2018 | 35.55M | -0.0% |
| 2018 | 35.56M | +0.3% |
| 2018 | 35.44M | +0.0% |
| 2018 | 35.44M | +1.0% |
| 2017 | 35.08M | +1.2% |
| 2017 | 34.66M | +1.6% |
| 2017 | 34.10M | +0.1% |
| 2017 | 34.06M | +2.4% |
| 2016 | 33.28M | -87.1% |
| 2015 | 258.21M | +3.1% |
| 2014 | 250.41M | +3.0% |
| 2013 | 243.08M | +2.8% |
| 2012 | 236.40M | +4.0% |
| 2011 | 227.31M | — |
Quarterly Shares Outstanding
| Quarter Ending | Shares Outstanding | YoY | QoQ |
|---|---|---|---|
| December 31, 2025 | 14.13M | +166.3% | +6.0% |
| September 30, 2025 | 13.33M | +178.2% | +0.1% |
| June 30, 2025 | 13.32M | -86.1% | +91.3% |
| March 31, 2025 | 6.96M | +45.3% | +31.2% |
| December 31, 2024 | 5.31M | -94.5% | +10.7% |
| September 30, 2024 | 4.79M | -95.0% | -0.1% |
| August 31, 2024 | 4.80M | — | -95.0% |
| June 30, 2024 | 95.85M | +2.3% | +1900.2% |
- QUANTUM CORP /DE/ showed an increase of +31.2% in Shares Outstanding compared to the prior fiscal year.
- Over the 2011–2025 period, QUANTUM CORP /DE/’s shares outstanding has declined by 96.9% (from 227.31 million shares to 6.96 million shares).
- The most recent figure is from QUANTUM CORP /DE/’s fiscal year 2025 report (Form 10-K), filed with the SEC on August 26, 2025.
- All figures are sourced from SEC EDGAR XBRL filings, last verified June 17, 2026.
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