TickerFacts.

Assembly Biosciences, Inc. (ASMB): Shares Outstanding

Annual figures by period end, from SEC filings.

Stock splits: 1-for-12, first reflected in a filing dated 2024-03-28. 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.

15.86M
As of 2025-12-31
19.85M
As of 2026-06-30
+57.3%
3-year compound annual growth
48.12M2010-12-31: 6.75M2011-12-31: 12.41M2012-12-31: 12.93M2013-12-31: 4.15M2014-12-31: 10.67M2015-12-31: 17.23M2016-12-31: 17.25M2017-12-31: 20.14M2018-12-31: 25.50M2019-12-31: 32.56M2020-12-31: 34.03M2021-12-31: 48.12M2022-12-31: 4.07M2023-12-31: 5.48M2024-12-31: 7.46M2025-12-31: 15.86M15.86M
2010-12-31 Shares Outstanding (shares) 2025-12-31

Paler bars were last filed before a stock split, on the old share basis.

Period endedShares OutstandingChange YoYSource filing
2025-12-3115.86M+112.6%2026-03-19, Balance as of period end
2024-12-317.46M+36.0%2026-03-19, Balance as of period end
2023-12-315.48M+34.6%2025-03-20, Balance as of period end
2022-12-314.07Mn/c2024-03-28, Balance as of period end
2021-12-3148.12M+41.4%2023-03-22, Balance as of period end
2020-12-3134.03M+4.5%2022-03-11, Balance as of period end
2019-12-3132.56M+27.7%2021-02-25, Balance as of period end
2018-12-3125.50M+26.6%2020-03-04, Balance as of period end
2017-12-3120.14M+16.8%2019-02-28, Balance as of period end
2016-12-3117.25M+0.1%2018-03-08, Balance as of period end
2015-12-3117.23M+61.4%2017-03-02, Balance as of period end
2014-12-3110.67M+157.4%2016-03-11, Balance as of period end
2013-12-314.15Mn/c2015-03-16, Balance as of period end
2012-12-3112.93M+4.3%2014-03-31, Balance as of period end
2011-12-3112.41M+83.9%2013-03-18, Balance as of period end
2010-12-316.75Mn/a2012-03-14, Balance as of period end