NASDAQ : ASND
-$0.46 (-0.19%)
4.97%
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0.00
change: -16.2835 | last: 0.1628817.07M
| Filing Date | Reporting Person | Amount Beneficially Owned | % of Class |
|---|---|---|---|
| 2026-05-15 | JANUS HENDERSON GROUP PLC | 3.72M | 6.00% |
| 2026-05-14 | Capital International Investors | 2.01M | 3.20% |
| 2026-05-07 | T. Rowe Price Investment Management, Inc. | 6.51M | 10.50% |
| 2026-05-07 | T. Rowe Price Investment Management, Inc. | 6.16M | 9.90% |
| 2026-05-06 | FMR LLC | 3.85M | 6.60% |
| 2026-02-11 | Westfield Capital Management Company, L.P. | 5.19M | 8.48% |
| 2026-02-03 | Artisan Partners Asset Management Inc. | 3.23M | 5.20% |
| 2025-11-14 | T. Rowe Price Investment Management, Inc. | 2.67M | 4.80% |
| 2025-11-14 | JANUS HENDERSON GROUP PLC | 4.32M | 7.80% |
| 2025-08-14 | T. Rowe Price Investment Management, Inc. | 3.58M | 6.40% |
| 2025-08-14 | JANUS HENDERSON GROUP PLC | 4.43M | 8.00% |
| 2025-08-13 | Capital International Investors | 3.11M | 5.60% |
| 2025-05-14 | JANUS HENDERSON GROUP PLC | 4.5M | 7.40% |
| 2025-05-14 | T. Rowe Price Investment Management, Inc. | 3.05M | 5.00% |
| 2025-05-12 | FMR LLC | 4.65M | 8.00% |
| 2025-02-14 | JANUS HENDERSON GROUP PLC | 4.38M | 7.20% |
| 2025-02-11 | Westfield Capital Management Company, L.P. | 5.53M | 9.18% |
| 2025-02-10 | Westfield Capital Management Company, L.P. | 4.08M | 9.18% |
| 2024-02-14 | 85-4328500 | 3.99M | 6.90% |
| 2023-02-14 | Avoro Capital Advisors LLC | 3.1M | 5.40% |
| 2023-02-14 | Behzad Aghazadeh | 3.1M | 5.40% |
| 2023-02-02 | Westfield Capital Management Company, LP | 3.16M | 5.54% |
| 2022-02-14 | Julian C. Baker | 4.54M | 8.00% |
| 2022-02-14 | Felix J. Baker | 4.54M | 8.00% |
| 2022-02-14 | Baker Bros. Advisors (GP) LLC | 4.54M | 8.00% |
| 2022-02-14 | Baker Bros. Advisors LP | 4.54M | 8.00% |
| 2022-02-14 | 52-0556948 | 4.76M | 8.30% |
| 2022-02-14 | RA Capital Management, L.P. | 7.57M | 13.30% |
| 2022-02-10 | EIN #00-0000000 | 3.22M | 5.70% |
| 2022-02-04 | Wellington Group Holdings LLP | 4.07M | 7.15% |
| 2022-02-04 | Wellington Management Company LLP | 3.64M | 6.41% |
| 2022-02-04 | Artisan Investments GP LLC | 7.94M | 13.90% |
| 2022-02-04 | Artisan Partners Limited Partnership | 7.94M | 13.90% |
| 2022-02-04 | Wellington Management Group LLP | 4.07M | 7.15% |
| 2022-02-04 | Artisan Partners Holdings LP | 7.94M | 13.90% |
| 2022-02-04 | Artisan Partners Asset Management Inc. | 7.94M | 13.90% |
| 2022-02-04 | Artisan Partners Funds, Inc. | 3.45M | 6.10% |
| 2022-02-04 | Wellington Investment Advisors Holdings LLP | 4.07M | 7.15% |
| 2021-02-16 | Felix J. Baker | 3.54M | 6.60% |
| 2021-02-16 | Baker Bros. Advisors LP | 3.54M | 6.60% |
| 2021-02-16 | Julian C. Baker | 3.54M | 6.60% |
| 2021-02-16 | 52-0556948 | 6.62M | 12.30% |
| 2021-02-16 | RA Capital Management, L.P. | 5.87M | 10.90% |
| 2021-02-16 | Baker Bros. Advisors (GP) LLC | 3.54M | 6.60% |
| 2021-02-12 | EIN #00-0000000 | 3.01M | 5.60% |
| 2021-02-10 | Artisan Partners Limited Partnership | 5.77M | 10.70% |
| 2021-02-10 | Artisan Partners Holdings LP | 5.77M | 10.70% |
| 2021-02-10 | Artisan Partners Asset Management Inc. | 5.77M | 10.70% |
| 2021-02-10 | Artisan Investments GP LLC | 5.77M | 10.70% |
| 2021-02-03 | Wellington Management Group LLP | 3.4M | 6.45% |
| 2021-02-03 | Wellington Group Holdings LLP | 3.4M | 6.45% |
| 2021-02-03 | Wellington Investment Advisors Holdings LLP | 3.4M | 6.45% |
| 2021-02-03 | Wellington Management Company LLP | 3.03M | 5.76% |
| 2020-10-08 | Artisan Partners Asset Management Inc. | 5.62M | 10.50% |
| 2020-10-08 | Artisan Partners Limited Partnership | 5.62M | 10.50% |
| 2020-10-08 | Artisan Investments GP LLC | 5.62M | 10.50% |
| 2020-10-08 | Artisan Partners Holdings LP | 5.62M | 10.50% |
| 2020-09-10 | Peter Kolchinsky | 5.82M | 10.90% |
| 2020-09-10 | Rajeev Shah | 5.82M | 10.90% |
| 2020-09-10 | RA Capital Management, L.P. | 5.82M | 10.90% |
| 2020-05-08 | OrbiMed Global Healthcare GP LLC | 61000.0 | 0.10% |
| 2020-05-08 | OrbiMed Advisors LLC | 2.52M | 5.20% |
| 2020-05-08 | OrbiMed Capital LLC | 275.5K | 0.60% |
| 2020-05-08 | OrbiMed Capital GP V LLC | 2.46M | 5.10% |
| 2020-03-05 | OrbiMed Capital GP V LLC | 2.95M | 6.10% |
| 2020-03-05 | OrbiMed Advisors LLC | 3.01M | 6.30% |
| 2020-03-05 | OrbiMed Capital LLC | 275.5K | 0.60% |
| 2020-02-14 | Baker Bros. Advisors (GP) LLC | 3.39M | 7.10% |
| 2020-02-14 | Bros. Advisors LP | 3.39M | 7.10% |
| 2020-02-14 | Felix J. Baker | 3.39M | 7.10% |
| 2020-02-14 | Julian C. Baker | 3.39M | 7.10% |
| 2020-02-14 | 52-0556948 | 7.76M | 16.20% |
| 2020-02-14 | RA Capital Management, L.P. | 4.19M | 8.80% |
| 2020-02-14 | Peter Kolchinsky | 4.19M | 8.80% |
| 2020-02-14 | Rajeev Shah | 4.19M | 8.80% |
| 2019-10-23 | Vivo Ventures VII, LLC | 1.6M | 3.30% |
| 2019-10-23 | Vivo Ventures Fund VII, L.P. | 1.56M | 3.20% |
| 2019-10-23 | Vivo Opportunity, LLC | 461.02K | 1.00% |
| 2019-10-23 | Vivo Opportunity Fund, L.P. | 461.02K | 1.00% |
| 2019-10-23 | Vivo Ventures VII Affiliates Fund, L.P. | 34113.0 | 0.10% |
| 2019-08-14 | OrbiMed Advisors LLC | 3.4M | 7.10% |
| 2019-08-14 | OrbiMed Capital LLC | 416.1K | 0.90% |
| 2019-08-14 | OrbiMed Capital GP V LLC | 3.34M | 7.00% |
| 2019-06-10 | 52-0556948 | 5.74M | 12.20% |
| 2019-03-12 | OrbiMed Advisors LLC | 3.63M | 7.91% |
| 2019-03-12 | OrbiMed Capital LLC | 636.5K | 1.37% |
| 2019-03-12 | OrbiMed Capital GP V LLC | 3.57M | 7.72% |
| 2019-02-14 | EcoR1 Capital, LLC | 679.75K | 11.00% |
| 2019-02-14 | 52-0556948 | 4.11M | 9.70% |
| 2019-02-14 | Oleg Nodelman | 679.75K | 11.00% |
| 2019-02-13 | Baker Bros. Advisors LP | 2.84M | 6.70% |
| 2019-02-13 | Felix J. Baker | 2.84M | 6.70% |
| 2019-02-13 | Baker Bros. Advisors (GP) LLC | 2.84M | 6.70% |
| 2019-02-13 | Julian C. Baker | 2.84M | 6.70% |
| 2019-02-12 | Dr. James I. Healy (“Healy”) | 2.04M | 4.90% |
| 2019-02-12 | Dr. Anand Mehra (“Mehra”) | 1.99M | 4.70% |
| 2019-02-11 | 2. | 4.24M | 10.10% |
| 2019-02-12 | Sofinnova Management IX, L.L.C. (“SM IX”) | 1.99M | 4.70% |
| 2019-02-12 | Sofinnova Venture Partners IX, L.P. (“SVP IX”) | 1.98M | 4.70% |
| 2019-02-11 | 2. | 4.24M | 10.10% |
| 2019-02-12 | Dr. Michael F. Powell (“Powell”) | 1.99M | 4.70% |
| 2018-06-15 | OrbiMed Capital LLC | 650K | 1.56% |
| 2018-06-15 | OrbiMed Advisors LLC | 3.76M | 9.05% |
| 2018-06-15 | OrbiMed Capital GP V LLC | 3.76M | 9.05% |
| 2018-02-14 | Denis Lucquin (“Lucquin”) | - | 0.00% |
| 2018-02-14 | EIN: 98-0444341 | - | 0.00% |
| 2018-02-14 | Antoine Papiernik (“Papiernik”) | - | 0.00% |
| 2018-02-14 | Sofinnova Partners SAS, a French corporation (“SP SAS”) | - | 0.00% |
| 2018-02-14 | RA Capital Management, LLC | 5.58M | 15.10% |
| 2018-02-14 | Oleg Nodelman | 2.11M | 11.00% |
| 2018-02-14 | Peter Kolchinsky | 5.58M | 15.10% |
| 2018-02-14 | EcoR1 Capital, LLC | 2.11M | 11.00% |
| 2018-02-14 | Monique Saulnier (“Saulnier”) | - | 0.00% |
| 2018-02-13 | Julian C. Baker | 2.62M | 7.10% |
| 2018-02-13 | Baker Bros. Advisors LP | 2.62M | 7.10% |
| 2018-02-13 | Baker Bros. Advisors (GP) LLC | 2.62M | 7.10% |
| 2018-02-13 | Felix J. Baker | 2.62M | 7.10% |
| 2018-01-29 | OrbiMed Capital LLC | 193.9K | 0.60% |
| 2018-01-29 | OrbiMed Capital GP V LLC | 4.2M | 11.40% |
| 2018-01-29 | OrbiMed Advisors LLC | 4.37M | 11.80% |
| 2017-07-10 | Denis Lucquin (“Lucquin”) | 3M | 9.20% |
| 2017-07-10 | Antoine Papiernik (“Papiernik”) | 3M | 9.20% |
| 2017-07-10 | Monique Saulnier (“Saulnier”) | 3M | 9.20% |
| 2017-07-10 | EIN: 98-0444341 | 3M | 9.20% |
| 2017-07-10 | Sofinnova Partners SAS, a French corporation (“SP SAS”) | 3M | 9.20% |
| 2017-06-21 | OrbiMed Capital LLC | 193.9K | 0.60% |
| 2017-06-21 | Samuel D. Isaly | 4.57M | 14.10% |
| 2017-06-21 | OrbiMed Capital GP V LLC | 4.2M | 12.90% |
| 2017-06-21 | OrbiMed Advisors LLC | 4.37M | 13.50% |
| 2017-02-14 | RA Capital Management, LLC | 5.41M | 16.70% |
| 2017-02-14 | Peter Kolchinsky | 5.41M | 16.70% |
| 2017-02-14 | RA Capital Healthcare Fund, L.P. | - | 0.00% |
| 2017-02-07 | Gilde Healthcare II Sub-Holding B.V. | - | 0.00% |
| 2017-02-07 | Gilde Healthcare Holding BV | - | 0.00% |
| 2017-02-07 | Martemanshurk BV (100% owned by Pieter van der Meer) | - | 0.00% |
| 2017-02-07 | Marc Olivier Perret | - | 0.00% |
| 2017-02-07 | Edwin de Graaf | - | 0.00% |
| 2017-02-07 | Gilde Healthcare II Management BV | - | 0.00% |
| 2016-12-06 | RA Capital Management, LLC | 5.38M | 17.10% |
| 2016-12-06 | Peter Kolchinsky | 5.38M | 17.10% |
| 2016-12-06 | RA Capital Healthcare Fund, L.P. | 4.4M | 14.00% |
| 2016-10-27 | Dr. James I. Healy (“Healy”) | 2.24M | 7.10% |
| 2016-10-27 | Dr. Michael F. Powell (“Powell”) | 2.23M | 7.10% |
| 2016-10-27 | Sofinnova Venture Partners IX, L.P. (“SVP IX”) | 2.23M | 7.10% |
| 2016-10-27 | Sofinnova Management IX, L.L.C. (“SM IX”) | 2.23M | 7.10% |
| 2016-10-27 | Dr. Anand Mehra (“Mehra”) | 2.23M | 7.10% |
| 2016-10-24 | Samuel D. Isaly | 4.2M | 13.30% |
| 2016-10-24 | OrbiMed Advisors LLC | 4.2M | 13.30% |
| 2016-10-24 | OrbiMed Capital GP V LLC | 4.2M | 13.30% |
| 2016-06-30 | Samuel D. Isaly | 3.67M | 14.60% |
| 2016-06-30 | OrbiMed Advisors LLC | 3.67M | 14.60% |
| 2016-06-30 | OrbiMed Capital GP V LLC | 3.67M | 14.60% |
| 2016-06-21 | OrbiMed Advisors LLC | 3.3M | 13.10% |
| 2016-06-21 | Samuel D. Isaly | 3.3M | 13.10% |
| 2016-06-21 | OrbiMed Capital GP V LLC | 3.3M | 13.10% |
| 2016-06-17 | OrbiMed Advisors LLC | 3M | 11.91% |
| 2016-06-17 | OrbiMed Capital GP V LLC | 3M | 11.91% |
| 2016-06-17 | Samuel D. Isaly | 3M | 11.91% |
| 2016-06-09 | OrbiMed Advisors LLC | 2.49M | 9.89% |
| 2016-06-09 | Samuel D. Isaly | 2.49M | 9.89% |
| 2016-06-09 | OrbiMed Capital GP V LLC | 2.49M | 9.89% |
| 2016-06-07 | RA Capital Healthcare Fund, L.P. | 2.16M | 8.60% |
| 2016-06-07 | RA Capital Management, LLC | 2.93M | 11.60% |
| 2016-06-07 | OrbiMed Advisors LLC | 2.07M | 8.21% |
| 2016-06-07 | OrbiMed Capital GP V LLC | 2.07M | 8.21% |
| 2016-06-07 | Samuel D. Isaly | 2.07M | 8.21% |
| 2016-06-07 | Peter Kolchinsky | 2.93M | 11.60% |
| 2016-02-16 | RA Capital Healthcare Fund, L.P. | 1.46M | 5.80% |
| 2016-02-16 | Peter Kolchinsky | 1.67M | 6.70% |
| 2016-02-16 | RA Capital Management, LLC | 1.67M | 6.70% |
| 2016-02-09 | Martemanshurk BV (100% owned by Pieter van der Meer) | 1.86M | 7.40% |
| 2016-02-09 | Marc Olivier Perret | 1.86M | 7.40% |
| 2016-02-09 | Edwin de Graaf | 1.86M | 7.40% |
| 2016-02-09 | Gilde Healthcare II Sub-Holding B.V. | 1.86M | 7.40% |
| 2016-02-09 | Gilde Healthcare II Management BV | 1.86M | 7.40% |
| 2016-02-09 | Gilde Healthcare Holding BV | 1.86M | 7.40% |
| 2015-11-20 | Samuel D. Isaly | 1.7M | 6.78% |
| 2015-11-20 | OrbiMed Advisors LLC | 1.7M | 6.78% |
| 2015-11-20 | OrbiMed Capital GP V LLC | 1.7M | 6.78% |
| 2015-09-09 | IX”) | 1.7M | 6.80% |
| 2015-09-09 | IX”) | 1.7M | 6.80% |
| 2015-09-09 | Dr. Anand Mehra (“Mehra”) | 1.7M | 6.80% |
| 2015-09-09 | Dr. James I. Healy (“Healy”) | 1.7M | 6.80% |
| 2015-09-09 | Dr. Michael F. Powell (“Powell”) | 1.7M | 6.80% |
| 2015-09-09 | Dr. Srinivas Akkaraju (“Akkaraju”) | 1.7M | 6.80% |
| 2015-08-31 | 2 | 1.25M | 5.20% |
| 2015-08-31 | 2 | 1.25M | 5.20% |
| 2015-08-31 | 2 | 1.25M | 5.20% |
| 2015-08-31 | 2 | 1.25M | 5.20% |
| 2015-05-08 | RA Capital Healthcare Fund, L.P. | 1.26M | 5.30% |
| 2015-05-08 | Peter Kolchinsky | 1.43M | 6.00% |
| 2015-05-08 | RA Capital Management, LLC | 1.43M | 6.00% |
| 2015-02-17 | Vivo Ventures Fund VII, L.P. FEIN 27-4485069 | 1.18M | 5.00% |
| 2015-02-17 | Vivo Ventures VII Affiliates Fund, L.P. FEIN 38-3860034 | 25754.0 | 0.10% |
| 2015-02-17 | Vivo Ventures VII, LLC FEIN 27-4484686 | 1.21M | 5.10% |
| 2015-02-12 | OrbiMed Advisors LLC | 1.45M | 6.10% |
| 2015-02-12 | Samuel D. Isaly | 1.45M | 6.10% |
| 2015-02-12 | OrbiMed Capital GP V LLC | 1.45M | 6.10% |
| 2015-02-06 | Dr. Srinivas Akkaraju (“Akkaraju”) | 1.45M | 6.60% |
| 2015-02-06 | Dr. Michael F. Powell (“Powell”) | 1.45M | 6.60% |
| 2015-02-06 | PERSON | 1.45M | 6.60% |
| 2015-02-06 | Dr. Anand Mehra (“Mehra”) | 1.45M | 6.60% |
| 2015-02-06 | Dr. James I. Healy (“Healy”) | 1.45M | 6.60% |
| 2015-02-06 | (“SM IX”) | 1.45M | 6.60% |
| Date | Stock Price | Shares Outstanding | Market Cap | Cash & Equivalents | Total Debt | Enterprise Value |
|---|---|---|---|---|---|---|
| 2025-12-31 | $181.49 | 60.61M | $11B | $615.78M | $871.41M | $11.26B |
| 2024-12-31 | $132.95 | 57.89M | $7.7B | $559.54M | $856.62M | $7.99B |
| 2023-12-31 | $113.95 | 56.29M | $6.41B | $392.16M | $743.06M | $6.76B |
| 2022-12-31 | $114.06 | 56.07M | $6.4B | $444.77M | $617.57M | $6.57B |
| 2021-12-31 | $118.31 | 54.77M | $6.48B | $446.27M | $209.92M | $6.24B |
| 2020-12-31 | $136.46 | 50.62M | $6.91B | $584.52M | $91.98M | $6.41B |
| 2019-12-31 | $124.05 | 46.51M | $5.77B | $598.11M | $36.62M | $5.21B |
| 2018-12-31 | $54.63 | 41.09M | $2.24B | $277.86M | -$ | $1.97B |
| 2017-12-31 | $33.15 | 33.63M | $1.11B | $195.35M | -$ | $919.48M |
| 2016-12-31 | $19.22 | 26.56M | $510.57M | $180.33M | -$ | $330.24M |
| Date | Stock Price | Shares Outstanding | Market Cap | Cash & Equivalents | Total Debt | Enterprise Value |
|---|---|---|---|---|---|---|
| 2026-03-31 | $197.87 | 61.68M | $12.21B | $573.42M | $897.6M | $12.53B |
| 2025-12-31 | $181.49 | 61.38M | $11.14B | $615.78M | $871.41M | $11.4B |
| 2025-09-30 | $169.39 | 60.99M | $10.33B | $539.09M | $813.65M | $10.61B |
| 2025-06-30 | $146.45 | 60.45M | $8.85B | $494.05M | $792.53M | $9.15B |
| 2025-03-31 | $144.03 | 60.02M | $8.64B | $517.92M | $847.27M | $8.97B |
| 2024-12-31 | $132.95 | 59.79M | $7.95B | $559.54M | $856.62M | $8.25B |
| 2024-09-30 | $134.07 | 58.57M | $7.85B | $625.52M | $788.66M | $8.01B |
| 2024-06-30 | $124.84 | 57.35M | $7.16B | $258.7M | $672.64M | $7.57B |
| 2024-03-31 | $141.42 | 56.88M | $8.04B | $320.24M | $669.01M | $8.39B |
| 2023-12-31 | $113.95 | 56.61M | $6.45B | $392.16M | $743.06M | $6.8B |
| 2023-09-30 | $88.54 | 56.27M | $4.98B | $441.27M | $665.84M | $5.21B |
| 2023-06-30 | $81.80 | 56.22M | $4.6B | $394.22M | $505.94M | $4.71B |