TickerFacts.

A10 Networks, Inc. (ATEN): Shares Outstanding

Annual figures by period end, from SEC filings.

Restated years: each year's figure is from the latest filing that reports it. The company later restated the years ended 2021-12-31, 2022-12-31 (for example after a spin-off or a discontinued operation), while the year before each was last reported on the old basis. Changes across those points are marked n/c (not comparable), and growth rates are not computed across them.

71.50M
As of 2025-12-31
72.45M
As of 2026-06-30
-1.0%
3-year compound annual growth
77.58M2013-12-31: 10.03M2014-12-31: 61.38M2015-12-31: 64.17M2016-12-31: 67.87M2017-12-31: 71.69M2018-12-31: 74.30M2019-12-31: 77.58M2020-12-31: 76.35M2021-12-31: 76.35M2022-12-31: 73.74M2023-12-31: 74.36M2024-12-31: 73.69M2025-12-31: 71.50M71.50M
2013-12-31 Shares Outstanding (shares) 2025-12-31
Period endedShares OutstandingChange YoYSource filing
2025-12-3171.50M-3.0%2026-02-25, Balance as of period end
2024-12-3173.69M-0.9%2026-02-25, Balance as of period end
2023-12-3174.36M+0.8%2025-02-25, Balance as of period end
2022-12-3173.74Mn/c2024-02-29, Balance as of period end
2021-12-3176.35Mn/c2023-02-27, Balance as of period end
2020-12-3176.35M-1.6%2022-03-08, Balance as of period end
2019-12-3177.58M+4.4%2021-03-08, Balance as of period end
2018-12-3174.30M+3.6%2020-03-10, Balance as of period end
2017-12-3171.69M+5.6%2019-03-18, Balance as of period end
2016-12-3167.87M+5.8%2018-08-29, Balance as of period end
2015-12-3164.17M+4.6%2018-08-29, Balance as of period end
2014-12-3161.38M+511.8%2016-03-01, Balance as of period end
2013-12-3110.03Mn/a2015-03-11, Balance as of period end