TickerFacts.

Arrowhead Pharmaceuticals, Inc. (ARWR): Shares Outstanding

Annual figures by period end, from SEC filings.

Stock splits: 1-for-10, first reflected in a filing dated 2011-12-20. Figures are as filed: per-share figures and share counts last reported before a split are on the old share basis, so changes and growth rates across a split are not shown. Splits are read from the filings' own restatements, so a share conversion in a merger or reorganization shows up the same way.

135.70M
As of 2025-09-30
141.13M
As of 2026-06-30
+8.6%
3-year compound annual growth
+5.8%
5-year compound annual growth
+8.6%
10-year compound annual growth
2010-09-30: 7.17M2011-09-30: 8.64M2012-09-30: 13.58M2013-09-30: 32.49M2014-09-30: 54.66M2015-09-30: 59.54M2016-09-30: 69.75M2017-09-30: 74.79M2018-09-30: 88.51M2019-09-30: 95.51M2020-09-30: 102.38M2021-09-30: 104.33M2022-09-30: 105.96M2023-09-30: 107.31M2024-09-30: 124.38M2025-09-30: 135.70M135.70M
2010-09-30 Shares Outstanding (shares) 2025-09-30
Period endedShares OutstandingChange YoYSource filing
2025-09-30135.70M+9.1%2025-11-25, Balance as of period end
2024-09-30124.38M+15.9%2025-11-25, Balance as of period end
2023-09-30107.31M+1.3%2024-11-26, Balance as of period end
2022-09-30105.96M+1.6%2023-11-29, Balance as of period end
2021-09-30104.33M+1.9%2022-11-28, Balance as of period end
2020-09-30102.38M+7.2%2021-11-22, Balance as of period end
2019-09-3095.51M+7.9%2020-11-23, Balance as of period end
2018-09-3088.51M+18.3%2019-11-25, Balance as of period end
2017-09-3074.79M+7.2%2018-12-11, Balance as of period end
2016-09-3069.75M+17.1%2017-12-12, Balance as of period end
2015-09-3059.54M+8.9%2016-12-14, Balance as of period end
2014-09-3054.66M+68.2%2015-12-14, Balance as of period end
2013-09-3032.49M+139.3%2014-11-25, Balance as of period end
2012-09-3013.58Mn/c2013-12-18, Balance as of period end
2011-09-308.64M+20.5%2012-12-28, Balance as of period end
2010-09-307.17Mn/a2011-12-20, Balance as of period end