Entity Common Stock, Shares Outstanding of ALNYLAM PHARMACEUTICALS, INC. from 30 Jul 2010 to 06 Feb 2026

Taxonomy & unit
dei: shares
Description
Indicate number of shares or other units outstanding of each of registrant's classes of capital or common stock or other ownership interests, if and as stated on cover of related periodic report. Where multiple classes or units exist define each class/interest by adding class of stock items such as Common Class A [Member], Common Class B [Member] or Partnership Interest [Member] onto the Instrument [Domain] of the Entity Listings, Instrument.
Summary
ALNYLAM PHARMACEUTICALS, INC. quarterly Entity Common Stock, Shares Outstanding in shares history and change rate from 30 Jul 2010 to 06 Feb 2026.
  • ALNYLAM PHARMACEUTICALS, INC. Entity Common Stock, Shares Outstanding for the quarter ending 06 Feb 2026 was 132,623,144, a 2.4% increase year-over-year.
Source SEC data
View on sec.gov
Entity Common Stock, Shares Outstanding, Quarterly (shares)
Entity Common Stock, Shares Outstanding, YoY Quarterly Change (%)

ALNYLAM PHARMACEUTICALS, INC. Quarterly Entity Common Stock, Shares Outstanding (shares)

Period Value YoY Chg Change % Date Report Filed Fiscal Year Fiscal Period
Q4 2025 132,623,144 +3,165,988 +2.4% 06 Feb 2026 10-K 12 Feb 2026 2025 FY
Q3 2025 132,113,818 +3,132,901 +2.4% 24 Oct 2025 10-Q 30 Oct 2025 2025 Q3
Q2 2025 131,079,015 +2,698,502 +2.1% 25 Jul 2025 10-Q 31 Jul 2025 2025 Q2
Q1 2025 130,388,393 +3,896,615 +3.1% 25 Apr 2025 10-Q 01 May 2025 2025 Q1
Q4 2024 129,457,156 +3,511,363 +2.8% 06 Feb 2025 10-K 13 Feb 2025 2024 FY
Q3 2024 128,980,917 +3,487,990 +2.8% 25 Oct 2024 10-Q 31 Oct 2024 2024 Q3
Q2 2024 128,380,513 +3,379,861 +2.7% 26 Jul 2024 10-Q 01 Aug 2024 2024 Q2
Q1 2024 126,491,778 +1,966,041 +1.6% 26 Apr 2024 10-Q 02 May 2024 2024 Q1
Q4 2023 125,945,793 09 Feb 2024 10-K 15 Feb 2024 2023 FY
Q3 2023 125,492,927 +2,464,693 +2% 27 Oct 2023 10-Q 02 Nov 2023 2023 Q3
Q2 2023 125,000,652 +4,974,093 +4.1% 28 Jul 2023 10-Q 03 Aug 2023 2023 Q2
Q1 2023 124,525,737 +3,712,178 +3.1% 28 Apr 2023 10-Q 04 May 2023 2023 Q1
Q3 2022 123,028,234 +3,427,057 +2.9% 21 Oct 2022 10-Q 27 Oct 2022 2022 Q3
Q2 2022 120,026,559 +1,178,866 +0.99% 22 Jul 2022 10-Q 28 Jul 2022 2022 Q2
Q1 2022 120,813,559 +3,268,519 +2.8% 22 Apr 2022 10-Q 28 Apr 2022 2022 Q1
Q4 2021 120,210,498 +3,208,479 +2.7% 04 Feb 2022 10-K 10 Feb 2022 2021 FY
Q3 2021 119,601,177 +3,420,409 +2.9% 22 Oct 2021 10-Q 28 Oct 2021 2021 Q3
Q2 2021 118,847,693 +2,877,910 +2.5% 30 Jul 2021 10-Q 03 Aug 2021 2021 Q2
Q1 2021 117,545,040 +2,725,889 +2.4% 23 Apr 2021 10-Q 29 Apr 2021 2021 Q1
Q4 2020 117,002,019 +4,418,055 +3.9% 05 Feb 2021 10-K 11 Feb 2021 2020 FY
Q3 2020 116,180,768 +4,691,024 +4.2% 30 Oct 2020 10-Q 05 Nov 2020 2020 Q3
Q2 2020 115,969,783 +4,762,132 +4.3% 31 Jul 2020 10-Q 06 Aug 2020 2020 Q2
Q1 2020 114,819,151 +8,282,373 +7.8% 30 Apr 2020 10-Q 06 May 2020 2020 Q1
Q4 2019 112,583,964 +6,325,714 +6% 07 Feb 2020 10-K 13 Feb 2020 2019 FY
Q3 2019 111,489,744 +10,459,386 +10% 25 Oct 2019 10-Q 31 Oct 2019 2019 Q3
Q2 2019 111,207,651 +10,541,539 +10% 31 Jul 2019 10-Q 06 Aug 2019 2019 Q2
Q1 2019 106,536,778 +6,014,367 +6% 30 Apr 2019 10-Q 02 May 2019 2019 Q1
Q4 2018 106,258,250 +6,390,430 +6.4% 31 Jan 2019 10-K 14 Feb 2019 2018 FY
Q3 2018 101,030,358 +8,299,546 +9% 31 Oct 2018 10-Q 07 Nov 2018 2018 Q3
Q2 2018 100,666,112 +8,932,743 +9.7% 31 Jul 2018 10-Q 02 Aug 2018 2018 Q2
Q1 2018 100,522,411 +14,332,219 +17% 30 Apr 2018 10-Q 04 May 2018 2018 Q1
Q4 2017 99,867,820 +13,854,035 +16% 31 Jan 2018 10-K 15 Feb 2018 2017 FY
Q3 2017 92,730,812 +6,916,943 +8.1% 31 Oct 2017 10-Q 07 Nov 2017 2017 Q3
Q2 2017 91,733,369 +6,008,732 +7% 31 Jul 2017 10-Q 09 Aug 2017 2017 Q2
Q1 2017 86,190,192 +629,657 +0.74% 28 Apr 2017 10-Q 05 May 2017 2017 Q1
Q4 2016 86,013,785 +875,183 +1% 31 Jan 2017 10-K 15 Feb 2017 2016 FY
Q3 2016 85,813,869 +1,078,162 +1.3% 31 Oct 2016 10-Q 03 Nov 2016 2016 Q3
Q2 2016 85,724,637 +1,109,506 +1.3% 29 Jul 2016 10-Q 04 Aug 2016 2016 Q2
Q1 2016 85,560,535 +1,277,837 +1.5% 29 Apr 2016 10-Q 04 May 2016 2016 Q1
Q4 2015 85,138,602 +1,378,459 +1.6% 29 Jan 2016 10-K 12 Feb 2016 2015 FY
Q3 2015 84,735,707 +7,804,617 +10% 30 Oct 2015 10-Q 09 Nov 2015 2015 Q3
Q2 2015 84,615,131 +8,260,314 +11% 31 Jul 2015 10-Q 07 Aug 2015 2015 Q2
Q1 2015 84,282,698 +8,729,307 +12% 30 Apr 2015 10-Q 08 May 2015 2015 Q1
Q4 2014 83,760,143 +19,843,329 +31% 30 Jan 2015 10-K 13 Feb 2015 2014 FY
Q3 2014 76,931,090 +13,501,014 +21% 31 Oct 2014 10-Q 06 Nov 2014 2014 Q3
Q2 2014 76,354,817 +13,394,811 +21% 31 Jul 2014 10-Q 08 Aug 2014 2014 Q2
Q1 2014 75,553,391 +13,382,354 +22% 30 Apr 2014 10-Q 09 May 2014 2014 Q1
Q4 2013 63,916,814 +2,049,993 +3.3% 31 Jan 2014 10-K 20 Feb 2014 2013 FY
Q3 2013 63,430,076 +11,015,674 +21% 31 Oct 2013 10-Q 07 Nov 2013 2013 Q3
Q2 2013 62,960,006 +10,715,059 +21% 31 Jul 2013 10-Q 09 Aug 2013 2013 Q2
Q1 2013 62,171,037 +10,221,106 +20% 30 Apr 2013 10-Q 07 May 2013 2013 Q1
Q4 2012 61,866,821 +18,658,365 +43% 31 Jan 2013 10-K 19 Feb 2013 2012 FY
Q3 2012 52,414,402 +9,687,418 +23% 31 Oct 2012 10-Q 05 Nov 2012 2012 Q3
Q2 2012 52,244,947 +9,593,165 +22% 31 Jul 2012 10-Q 08 Aug 2012 2012 Q2
Q1 2012 51,949,931 +9,541,701 +22% 30 Apr 2012 10-Q 03 May 2012 2012 Q1
Q4 2011 43,208,456 +864,833 +2% 31 Jan 2012 10-K 13 Feb 2012 2011 FY
Q3 2011 42,726,984 +527,144 +1.2% 31 Oct 2011 10-Q 03 Nov 2011 2011 Q3
Q2 2011 42,651,782 +555,051 +1.3% 29 Jul 2011 10-Q 03 Aug 2011 2011 Q2
Q1 2011 42,408,230 02 May 2011 10-Q 05 May 2011 2011 Q1
Q4 2010 42,343,623 31 Jan 2011 10-K 18 Feb 2011 2010 FY
Q3 2010 42,199,840 29 Oct 2010 10-Q 04 Nov 2010 2010 Q3
Q2 2010 42,096,731 30 Jul 2010 10-Q 05 Aug 2010 2010 Q2
* An asterisk sign (*) next to the value indicates that the value is likely invalid.