NASDAQ : CERS
$0.05 (2.2%)
6.64%
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0.00
change: -279.9235 | last: 2.799237.62M
| Filing Date | Reporting Person | Amount Beneficially Owned | % of Class |
|---|---|---|---|
| 2026-03-26 | The Vanguard Group | - | 0.00% |
| 2026-03-24 | Soleus Capital Master Fund, L.P. | 9.83M | 5.10% |
| 2025-11-14 | Baker Bros. Advisors LP | 10.01M | 5.20% |
| 2025-08-14 | Baker Bros. Advisors LP | 12.88M | 6.70% |
| 2025-07-30 | ARK Investment Management LLC | 19.21M | 10.05% |
| 2025-02-14 | ARK Investment Management LLC | 20.81M | 11.21% |
| 2025-01-10 | ARK Investment Management LLC | 18.23M | 9.84% |
| 2022-02-14 | Nikko Asset Management Americas, Inc. | 11.53M | 6.69% |
| 2022-02-10 | PRIMECAP Management Company | 9.72M | 5.64% |
| 2022-02-10 | PRIMECAP Management Company | 9.72M | 5.64% |
| 2022-02-09 | The Vanguard Group - 23-1945930 | 8.82M | 5.12% |
| 2022-02-09 | ARK Investment Management LLC | 15.76M | 9.15% |
| 2022-02-04 | Sumitomo Mitsui Trust Holdings, Inc. (“SMTH”) | 11.53M | 6.69% |
| 2022-02-04 | Nikko Asset Management Co., Ltd. (“NAM”) | 11.53M | 6.69% |
| 2022-02-01 | (1) BlackRock, Inc. | 12.21M | 7.10% |
| 2021-02-16 | ARK Investment Management LLC | 29.57M | 17.69% |
| 2021-02-16 | Baker Bros. Advisors LP | 13.71M | 8.20% |
| 2021-02-11 | Nikko Asset Management Americas, Inc. | 11.1M | 6.64% |
| 2021-02-11 | Nikko Asset Management Americas, Inc. | 11.1M | 6.64% |
| 2021-02-10 | The Vanguard Group - 23-1945930 | 8.68M | 5.19% |
| 2021-02-05 | Sumitomo Mitsui Trust Holdings, Inc. (“SMTH”) | 11.1M | 6.64% |
| 2021-02-05 | Nikko Asset Management Co., Ltd. (“NAM”) | 11.1M | 6.64% |
| 2021-02-05 | Nikko Asset Management Co., Ltd. (“NAM”) | 11.1M | 6.64% |
| 2021-02-05 | Sumitomo Mitsui Trust Holdings, Inc. (“SMTH”) | 11.1M | 6.64% |
| 2020-02-14 | ARK Investment Management LLC | 9.42M | 6.63% |
| 2020-02-14 | ARK Investment Management LLC | 9.42M | 6.63% |
| 2020-02-12 | Nikko Asset Management Co., Ltd. (“NAM”) | 9.77M | 6.87% |
| 2020-02-12 | Sumitomo Mitsui Trust Holdings, Inc. (“SMTH”) | 9.77M | 6.87% |
| 2020-02-12 | Nikko Asset Management Americas, Inc. | 9.77M | 6.87% |
| 2020-02-12 | Nikko Asset Management Co., Ltd. (“NAM”) | 9.77M | 6.87% |
| 2020-02-12 | Nikko Asset Management Americas, Inc. | 9.77M | 6.87% |
| 2020-02-12 | Sumitomo Mitsui Trust Holdings, Inc. (“SMTH”) | 9.77M | 6.87% |
| 2020-02-12 | PRIMECAP Management Company 95-3868081 | 11.3M | 7.95% |
| 2020-02-11 | The Vanguard Group - 23-1945930 | 7.42M | 5.22% |
| 2020-02-11 | The Vanguard Group - 23-1945930 | 7.42M | 5.22% |
| 2020-02-05 | (1) BlackRock, Inc. | 11.58M | 8.10% |
| 2020-01-23 | 27-5463196 | 10.0 | 12.00% |
| 2020-01-23 | 27-5463196 | 10.0 | 12.00% |
| 2019-08-09 | Elk Creek Partners, LLC | 7.07M | 5.04% |
| 2019-08-09 | Elk Creek Partners, LLC | 7.07M | 5.04% |
| 2019-02-08 | 27-5463196 | 10.0 | 12.00% |
| 2019-02-08 | PRIMECAP Management Company 95-3868081 | 10.8M | 7.96% |
| 2019-02-08 | 27-5463196 | 10.0 | 12.00% |
| 2019-02-04 | (1) BlackRock, Inc. | 10.79M | 8.00% |
| 2018-02-13 | ELK CREEK PARTNERS, LLC | 6.55M | 5.74% |
| 2017-05-08 | ELK CREEK PARTNERS, LLC | 5.37M | 5.17% |
| 2017-05-08 | ELK CREEK PARTNERS, LLC | 5.37M | 5.17% |
| 2017-01-23 | (1) BlackRock, Inc. | 7.86M | 7.60% |
| 2016-02-16 | Felix J. Baker | 13.57M | 14.00% |
| 2016-02-16 | Julian C. Baker | 13.57M | 14.00% |
| 2016-02-16 | Baker Bros. Advisors LP | 13.55M | 14.00% |
| 2016-02-16 | Baker Bros. Advisors (GP) LLC | 13.55M | 14.00% |
| 2016-01-29 | Wells Fargo & Company | 5.03M | 5.18% |
| 2016-01-26 | (1) BlackRock, Inc. | 6.65M | 6.80% |
| 2015-02-17 | NAME OF REPORTING | 2.64M | 3.37% |
| 2015-02-17 | NAME OF REPORTING | 7.04M | 8.99% |
| 2015-02-17 | NAME OF REPORTING | 4.4M | 5.62% |
| 2015-02-02 | 52-2343049 | 3.46M | 4.41% |
| 2015-01-26 | (1) BlackRock, Inc. | 5.75M | 7.30% |
| 2014-08-11 | Abigail P. Johnson | 2.68M | 3.70% |
| 2014-08-11 | FMR LLC | 2.68M | 3.70% |
| 2014-08-11 | Edward C. Johnson 3d | 2.68M | 3.70% |
| 2014-01-28 | (1) BlackRock, Inc. | 5.06M | 7.20% |
| 2013-05-10 | 13-4093645 | 8.46M | 12.10% |
| 2013-05-10 | 13-4093645 | 8.46M | 12.10% |
| 2013-05-10 | Julian C. Baker | 8.46M | 12.10% |
| 2013-05-10 | Felix J. Baker | 8.46M | 12.10% |
| 2013-05-10 | Felix J. Baker | 8.46M | 12.10% |
| 2013-05-10 | Julian C. Baker | 8.46M | 12.10% |
| 2013-01-04 | 52-2343049 | 4.52M | 8.15% |
| 2013-01-04 | 52-2343049 | 4.52M | 8.15% |
| 2012-02-14 | Edward C. Johnson 3d | 3.64M | 7.57% |
| 2012-02-14 | Edward C. Johnson 3d | 3.64M | 7.57% |
| 2012-02-14 | FMR LLC | 3.64M | 7.57% |
| 2012-02-14 | FMR LLC | 3.64M | 7.57% |
| 2012-01-09 | 52-2343049 | 4.86M | 10.11% |
| 2011-09-07 | 52-2343049 | 4.86M | 10.19% |
| 2011-02-03 | (1) BlackRock, Inc. | 2.74M | 5.79% |
| 2010-02-12 | Capital Ventures International | 800K | 2.00% |
| 2010-02-12 | Heights Capital Management, Inc. | 800K | 2.00% |
| 2010-01-22 | 52-2343049 | 3.89M | 10.05% |
| 2007-02-13 | 52-0556948 | 1.96M | 6.10% |
| 2004-05-28 | Deerfield Capital, L.P. | 510K | 2.31% |
| 2004-05-28 | Deerfield Management Company, L.P. | 490K | 2.22% |
| 2004-05-28 | Deerfield Partners, L.P. | 510K | 2.31% |
| 2004-05-28 | Arnold H. Snider | 1M | 4.52% |
| 2004-05-28 | Deerfield International Limited | 490K | 2.22% |
| 2004-02-04 | Franklin Resources, Inc. (13-2670991) | 953.4K | 1.50% |
| 2003-11-10 | Edward C. Johnson 3d | 768.76K | 3.49% |
| 2003-11-10 | Abigail P. Johnson | 768.76K | 3.49% |
| 2003-11-10 | FMR Corp. | 768.76K | 3.49% |
| 2003-02-13 | FMR Corp. | 1.46M | 9.18% |
| 2003-02-13 | Deerfield Capital, L.P. | 512.18K | 3.22% |
| 2003-02-13 | Deerfield International Limited | 402.42K | 2.53% |
| 2003-02-13 | Edward C. Johnson 3d | 1.46M | 9.18% |
| 2003-02-13 | Arnold H. Snider | 914.6K | 5.75% |
| 2003-02-13 | Deerfield Management Company | 402.42K | 2.53% |
| 2003-02-13 | Deerfield Partners, L.P. | 512.18K | 3.22% |
| 2003-02-13 | Abigail P. Johnson | 1.46M | 9.18% |
| 2003-02-12 | Franklin Resources, Inc. | 1.35M | 8.50% |
| 2002-09-09 | Janus Global Life Sciences Fund | - | 0.00% |
| 2002-09-09 | Janus Capital Management LLC | - | 0.00% |
| 2002-08-19 | Deerfield International Limited | 453.46K | 2.87% |
| 2002-08-19 | Deerfield Management Company | 453.46K | 2.87% |
| 2002-08-19 | Deerfield Partners, L.P. | 577.14K | 3.66% |
| 2002-08-19 | Arnold H. Snider | 1.03M | 6.53% |
| 2002-08-19 | Deerfield Capital, L.P. | 577.14K | 3.66% |
| 2002-08-09 | Janus Capital Management LLC | 1.03M | 6.50% |
| 2002-08-09 | Janus Global Life Sciences Fund | 700K | 4.40% |
| 2002-02-14 | Thomas H. Bailey | 1.93M | 12.30% |
| 2002-02-14 | Janus Capital Corporation | 1.93M | 12.30% |
| 2002-02-14 | Janus Global Life Sciences Fund | 822.11K | 5.20% |
| 2001-02-15 | Thomas H. Bailey | 1.48M | 10.50% |
| 2001-02-15 | Janus Capital Corporation | 1.48M | 10.50% |
| 2001-02-15 | Janus Global Life Sciences Fund | 851.41K | 6.00% |
| 2000-09-08 | Janus Global Life Sciences Fund | 783.02K | 5.60% |
| 2000-09-08 | Janus Capital Corporation | 1.46M | 10.40% |
| 2000-09-08 | Thomas H. Bailey | 1.46M | 10.40% |
| 1998-09-15 | BAXTER INTERNATIONAL INC. | 1.62M | 18.10% |
| Date | Stock Price | Shares Outstanding | Market Cap | Cash & Equivalents | Total Debt | Enterprise Value |
|---|---|---|---|---|---|---|
| 2025-12-31 | $2.06 | 190.59M | $392.62M | $19.96M | $96.95M | $469.61M |
| 2024-12-31 | $1.54 | 184.56M | $284.23M | $20.27M | $98.1M | $362.06M |
| 2023-12-31 | $2.16 | 180.27M | $389.38M | $11.65M | $96M | $473.74M |
| 2022-12-31 | $3.65 | 176.54M | $644.39M | $35.58M | $87.24M | $696.04M |
| 2021-12-31 | $6.81 | 171.28M | $1.17B | $48.76M | $87.59M | $1.21B |
| 2020-12-31 | $6.92 | 163.95M | $1.13B | $36.59M | $66.89M | $1.16B |
| 2019-12-31 | $4.22 | 139.83M | $590.09M | $34.99M | $64.45M | $619.55M |
| 2018-12-31 | $5.07 | 130.83M | $663.29M | $28.86M | $29.87M | $664.31M |
| 2017-12-31 | $3.38 | 108.19M | $365.67M | $13.68M | $29.8M | $381.79M |
| 2016-12-31 | $4.35 | 101.46M | $441.36M | $22.56M | $19.38M | $438.17M |
| Date | Stock Price | Shares Outstanding | Market Cap | Cash & Equivalents | Total Debt | Enterprise Value |
|---|---|---|---|---|---|---|
| 2026-06-30 | $2.92 | 200.56M | $585.65M | $17.98M | $76.8M | $644.47M |
| 2026-03-31 | $1.82 | 194.14M | $353.34M | $27.85M | $97.36M | $422.85M |
| 2025-12-31 | $2.06 | 192.11M | $395.74M | $19.96M | $96.95M | $472.73M |
| 2025-09-30 | $1.59 | 191.83M | $305.01M | $15.67M | $98.19M | $387.53M |
| 2025-06-30 | $1.41 | 191.3M | $269.73M | $15.99M | $98.9M | $352.64M |
| 2025-03-31 | $1.39 | 187.07M | $260.02M | $19.48M | $99.45M | $339.99M |
| 2024-12-31 | $1.54 | 184.56M | $284.23M | $20.27M | $98.1M | $362.06M |
| 2024-09-30 | $1.74 | 185.42M | $322.64M | $21.58M | $97.9M | $398.96M |
| 2024-06-30 | $1.72 | 184.98M | $318.17M | $12.4M | $98.69M | $404.46M |
| 2024-03-31 | $1.80 | 182.09M | $327.76M | $20.53M | $100.6M | $407.84M |
| 2023-12-31 | $2.16 | 181.22M | $391.43M | $11.65M | $93.55M | $473.33M |
| 2023-09-30 | $1.62 | 180.94M | $293.12M | $17.39M | $94.92M | $370.65M |