Merck & Co., Inc. (MRK)

Historical Shares Outstanding

Current Count

2.47B

Financial Fundamentals

MRK • Quarterly Data • 5Y View

Share Count History

Date	Shares Out. (M)	Change (M)	Change %
2026-03-31	2,472.0	-16.0	-0.64%
2025-12-31	2,488.0	-10.0	-0.40%
2025-09-30	2,498.0	-15.0	-0.60%
2025-06-30	2,513.0	-18.0	-0.71%
2025-03-31	2,531.0	-10.0	-0.39%
2024-12-31	2,541.0	0.0	0.00%
2024-09-30	2,541.0	-3.0	-0.12%
2024-06-30	2,544.0	0.0	0.00%
2024-03-31	2,544.0	-10.2	-0.40%
2023-12-31	2,554.2	8.2	+0.32%
2023-09-30	2,546.0	7.0	+0.28%
2023-06-30	2,539.0	-12.0	-0.47%
2023-03-31	2,551.0	3.0	+0.12%
2022-12-31	2,548.0	6.0	+0.24%
2022-09-30	2,542.0	2.0	+0.08%
2022-06-30	2,540.0	3.0	+0.12%
2022-03-31	2,537.0	2.0	+0.08%
2021-12-31	2,535.0	-1.0	-0.04%
2021-09-30	2,536.0	-4.0	-0.16%
2021-06-30	2,540.0	-1.0	-0.04%
2021-03-31	2,541.0	1.0	+0.04%
2020-12-31	2,540.0	2.0	+0.08%
2020-09-30	2,538.0	2.0	+0.08%
2020-06-30	2,536.0	-11.0	-0.43%
2020-03-31	2,547.0	-12.0	-0.47%
2019-12-31	2,559.0	-13.0	-0.51%
2019-09-30	2,572.0	-16.0	-0.62%
2019-06-30	2,588.0	-15.0	-0.58%
2019-03-31	2,603.0	-31.0	-1.18%
2018-12-31	2,634.0	-44.0	-1.64%
2018-09-30	2,678.0	-18.0	-0.67%
2018-06-30	2,696.0	-14.0	-0.52%
2018-03-31	2,710.0	-5.0	-0.18%
2017-12-31	2,715.0	-12.0	-0.44%
2017-09-30	2,727.0	-25.0	-0.91%
2017-06-30	2,752.0	-14.0	-0.51%
2017-03-31	2,766.0	-10.0	-0.36%
2016-12-31	2,776.0	-10.0	-0.36%
2016-09-30	2,786.0	-3.0	-0.11%
2016-06-30	2,789.0	-6.0	-0.21%
2016-03-31	2,795.0	-18.0	-0.64%
2015-12-31	2,813.0	-23.0	-0.81%
2015-09-30	2,836.0	-14.0	-0.49%
2015-06-30	2,850.0	-15.0	-0.52%
2015-03-31	2,865.0	-15.0	-0.52%
2014-12-31	2,880.0	-31.0	-1.06%
2014-09-30	2,911.0	-38.0	-1.29%
2014-06-30	2,949.0	-22.0	-0.74%
2014-03-31	2,971.0	12.0	+0.41%
2013-12-31	2,959.0	-1.0	-0.03%
2013-09-30	2,960.0	-50.0	-1.66%
2013-06-30	3,010.0	-43.0	-1.41%
2013-03-31	3,053.0	-21.0	-0.68%
2012-12-31	3,074.0	0.0	0.00%
2012-09-30	3,074.0	0.0	0.00%
2012-06-30	3,074.0	0.0	0.00%
2012-03-31	3,074.0	5.0	+0.16%
2011-12-31	3,069.0	-22.0	-0.71%
2011-09-30	3,091.0	-19.0	-0.61%
2011-06-30	3,110.0	6.0	+0.19%
2011-03-31	3,104.0	24.1	+0.78%
2010-12-31	3,079.9	-21.7	-0.70%
2010-09-30	3,101.6	-23.9	-0.76%
2010-06-30	3,125.5	-15.5	-0.49%
2010-03-31	3,141.0	1031.9	+48.93%
2009-12-31	2,109.1	-4.6	-0.22%
2009-09-30	2,113.7	3.7	+0.18%
2009-06-30	2,110.0	0.8	+0.04%
2009-03-31	2,109.2	-19.3	-0.91%
2008-12-31	2,128.5	-4.2	-0.20%
2008-09-30	2,132.7	-19.2	-0.89%
2008-06-30	2,151.9	-8.4	-0.39%
2008-03-31	2,160.3	-19.0	-0.87%
2007-12-31	2,179.3	0.0	0.00%
2007-09-30	2,179.3	2.1	+0.10%
2007-06-30	2,177.1	-7.9	-0.36%
2007-03-31	2,185.0	9.8	+0.45%
2006-12-31	2,175.2	-10.5	-0.48%
2006-09-30	2,185.7	12.8	+0.59%
2006-06-30	2,172.9	-17.6	-0.80%
2006-03-31	2,190.5	-3.5	-0.16%
2005-12-31	2,194.0	-3.0	-0.14%
2005-09-30	2,197.0	-9.1	-0.41%
2005-06-30	2,206.1	-4.3	-0.19%
2005-03-31	2,210.4	-8.1	-0.37%
2004-12-31	2,218.5	-7.7	-0.35%
2004-09-30	2,226.2	-3.9	-0.17%
2004-06-30	2,230.1	-2.4	-0.11%
2004-03-31	2,232.5	-4.5	-0.20%
2003-12-31	2,237.0	-16.9	-0.75%
2003-09-30	2,253.9	-7.2	-0.32%
2003-06-30	2,261.1	-1.0	-0.04%
2003-03-31	2,262.1	12.2	+0.54%
2002-12-31	2,249.9	-16.0	-0.71%
2002-09-30	2,265.9	-16.9	-0.74%
2002-06-30	2,282.8	-12.0	-0.52%
2002-03-31	2,294.8	23.5	+1.03%
2001-12-31	2,271.3	-41.1	-1.78%
2001-09-30	2,312.4	-15.8	-0.68%
2001-06-30	2,328.2	-17.7	-0.75%
2001-03-31	2,345.9	42.2	+1.83%
2000-12-31	2,303.7	-39.2	-1.67%
2000-09-30	2,342.9	-2.8	-0.12%
2000-06-30	2,345.7	-17.4	-0.74%
2000-03-31	2,363.1	45.6	+1.97%
1999-12-31	2,317.5	-88.1	-3.66%
1999-09-30	2,405.6	-8.0	-0.33%
1999-06-30	2,413.6	-11.3	-0.47%
1999-03-31	2,424.9	63.0	+2.67%
1998-12-31	2,361.9	-79.2	-3.24%
1998-09-30	2,441.1	3.8	+0.16%
1998-06-30	2,437.2	11.4	+0.47%
1998-03-31	2,425.8	49.5	+2.08%
1997-12-31	2,376.3	-66.9	-2.74%
1997-09-30	2,443.3	-12.9	-0.53%
1997-06-30	2,456.2	-32.4	-1.30%
1997-03-31	2,488.5	59.3	+2.44%
1996-12-31	2,429.3	-14.4	-0.59%
1996-09-30	2,443.7	-48.9	-1.96%
1996-06-30	2,492.6	—	—