Ionis Pharmaceuticals, Inc. (IONS)

Historical Shares Outstanding

Current Count

165.4M

Financial Fundamentals

IONS • Quarterly Data • 5Y View

Share Count History

Date	Shares Out. (M)	Change (M)	Change %
2026-06-30	165.4	0.5	+0.33%
2026-03-31	164.9	2.9	+1.77%
2025-12-31	162.0	1.2	+0.77%
2025-09-30	160.8	-21.6	-11.83%
2025-06-30	182.3	23.6	+14.87%
2025-03-31	158.7	0.7	+0.47%
2024-12-31	158.0	9.4	+6.33%
2024-09-30	148.6	2.6	+1.81%
2024-06-30	146.0	0.4	+0.29%
2024-03-31	145.5	1.5	+1.07%
2023-12-31	144.0	0.7	+0.48%
2023-09-30	143.3	0.2	+0.15%
2023-06-30	143.1	0.4	+0.25%
2023-03-31	142.7	0.7	+0.52%
2022-12-31	142.0	0.1	+0.04%
2022-09-30	142.0	0.2	+0.11%
2022-06-30	141.8	0.2	+0.14%
2022-03-31	141.6	-18.4	-11.50%
2021-12-31	160.0	18.9	+13.36%
2021-09-30	141.1	0.2	+0.13%
2021-06-30	141.0	0.2	+0.14%
2021-03-31	140.8	0.8	+0.55%
2020-12-31	140.0	0.3	+0.21%
2020-09-30	139.7	0.4	+0.26%
2020-06-30	139.4	-0.1	-0.06%
2020-03-31	139.4	-13.6	-8.87%
2019-12-31	153.0	9.6	+6.69%
2019-09-30	143.4	3.2	+2.25%
2019-06-30	140.2	-1.3	-0.91%
2019-03-31	141.5	-8.3	-5.55%
2018-12-31	149.9	12.5	+9.11%
2018-09-30	137.3	8.6	+6.71%
2018-06-30	128.7	3.4	+2.70%
2018-03-31	125.3	-1.5	-1.21%
2017-12-31	126.9	2.5	+2.00%
2017-09-30	124.4	0.4	+0.31%
2017-06-30	124.0	-1.0	-0.79%
2017-03-31	125.0	1.0	+0.82%
2016-12-31	124.0	0.6	+0.47%
2016-09-30	123.4	2.6	+2.14%
2016-06-30	120.8	0.2	+0.17%
2016-03-31	120.6	0.4	+0.34%
2015-12-31	120.2	0.2	+0.18%
2015-09-30	120.0	-7.8	-6.10%
2015-06-30	127.8	8.8	+7.42%
2015-03-31	118.9	-3.9	-3.17%
2014-12-31	122.8	5.0	+4.27%
2014-09-30	117.8	0.2	+0.19%
2014-06-30	117.6	0.5	+0.39%
2014-03-31	117.1	1.0	+0.87%
2013-12-31	116.1	0.9	+0.75%
2013-09-30	115.3	6.7	+6.20%
2013-06-30	108.5	6.7	+6.54%
2013-03-31	101.9	0.6	+0.62%
2012-12-31	101.2	0.6	+0.56%
2012-09-30	100.7	0.5	+0.47%
2012-06-30	100.2	0.1	+0.06%
2012-03-31	100.2	0.0	0.00%
2011-12-31	100.2	0.5	+0.47%
2011-09-30	99.7	0.1	+0.09%
2011-06-30	99.6	0.0	+0.03%
2011-03-31	99.6	0.0	0.00%
2010-12-31	99.6	0.4	+0.38%
2010-09-30	99.2	0.1	+0.11%
2010-06-30	99.1	0.1	+0.08%
2010-03-31	99.0	0.0	0.00%
2009-12-31	99.0	0.7	+0.70%
2009-09-30	98.3	0.2	+0.21%
2009-06-30	98.1	0.6	+0.61%
2009-03-31	97.5	0.0	0.00%
2008-12-31	97.5	-2.7	-2.66%
2008-09-30	100.2	5.5	+5.82%
2008-06-30	94.7	3.9	+4.27%
2008-03-31	90.8	0.0	0.00%
2007-12-31	90.8	6.9	+8.17%
2007-09-30	83.9	1.4	+1.69%
2007-06-30	82.5	0.1	+0.11%
2007-03-31	82.5	0.0	0.00%
2006-12-31	82.5	8.9	+12.05%
2006-09-30	73.6	0.8	+1.05%
2006-06-30	72.8	0.4	+0.61%
2006-03-31	72.4	0.0	0.00%
2005-12-31	72.4	8.3	+12.94%
2005-09-30	64.1	6.6	+11.41%
2005-06-30	57.5	0.0	+0.01%
2005-03-31	57.5	0.0	0.00%
2004-12-31	57.5	0.3	+0.44%
2004-09-30	57.3	1.2	+2.06%
2004-06-30	56.1	0.3	+0.45%
2004-03-31	55.9	0.0	0.00%
2003-12-31	55.9	0.3	+0.57%
2003-09-30	55.5	0.2	+0.29%
2003-06-30	55.4	0.0	+0.01%
2003-03-31	55.4	0.0	0.00%
2002-12-31	55.4	0.7	+1.22%
2002-09-30	54.7	0.6	+1.09%
2002-06-30	54.1	0.2	+0.36%
2002-03-31	53.9	0.0	0.00%
2001-12-31	53.9	10.1	+22.92%
2001-09-30	43.9	3.4	+8.34%
2001-06-30	40.5	0.3	+0.85%
2001-03-31	40.2	1.7	+4.43%
2000-12-31	38.4	0.0	0.00%
2000-09-30	38.4	1.5	+3.97%
2000-06-30	37.0	3.9	+11.84%
2000-03-31	33.1	4.4	+15.46%
1999-12-31	28.6	0.0	0.00%
1999-09-30	28.6	0.5	+1.78%
1999-06-30	28.1	0.7	+2.72%
1999-03-31	27.4	2.4	+9.57%
1998-12-31	25.0	0.0	0.00%
1998-09-30	25.0	-1.5	-5.80%
1998-06-30	26.5	-0.2	-0.77%
1998-03-31	26.7	-0.8	-2.75%
1997-12-31	27.5	0.0	0.00%
1997-09-30	27.5	1.4	+5.32%
1997-06-30	26.1	0.1	+0.19%
1997-03-31	26.1	-0.0	-0.10%
1996-12-31	26.1	0.0	0.00%
1996-09-30	26.1	—	—