Gilead Sciences, Inc.
Close on Nov 2, 2026Market cap $211.20BP/E –Yield 1.86%
Gilead Sciences Zydelig (idelalisib by Quarter
Zydelig (idelalisib — hematologic oncology, legacy breakout) — Europe sales ($M) ($M)
Gilead Sciences Zydelig (idelalisib: $8M in Q4 2021, down 11.1% from a year earlier. No newer figure appears in the documents we track.
Where the Q4 2021 figure comes from
Calculated from reported figures: Q4 = full year (10-K) − nine months (10-Q)
Source: Form 10-K (filed 2022-02-23) ↗
Reported in Form 10-Q / 10-K Disaggregated Revenue Note & Form 8-K Product Sales Summary.
Quarterly history
Hover a value to see the sentence it was read from; calculated values show their formula
| Period | Ended | Zydelig (idelalisib — hematologic oncology, legacy breakout) — Europe sales ($M) ($M) | Year on year | Source |
|---|---|---|---|---|
| Q4 2021 | Dec 31, 2021 | 8 | -11.1% | Form 10-K (filed 2022-02-23) ↗ |
| Q3 2021 | Sep 30, 2021 | 7 | -22.2% | Form 10-Q (filed 2021-11-03) ↗ |
| Q2 2021 | Jun 30, 2021 | 13 | +44.4% | Form 10-Q (filed 2021-08-05) ↗ |
| Q1 2021 | Mar 31, 2021 | 7 | -41.7% | Form 10-Q (filed 2021-05-06) ↗ |
| Q4 2020 | Dec 31, 2020 | 9 | -25.0% | Form 10-K (filed 2022-02-23) ↗ |
| Q3 2020 | Sep 30, 2020 | 9 | -30.8% | Form 10-Q (filed 2021-11-03) ↗ |
| Q2 2020 | Jun 30, 2020 | 9 | -35.7% | Form 10-Q (filed 2021-08-05) ↗ |
| Q1 2020 | Mar 31, 2020 | 12 | -20.0% | Form 10-Q (filed 2020-05-06) ↗ |
| Q4 2019 | Dec 31, 2019 | 12 | -53.8% | Form 10-K (filed 2022-02-23) ↗ |
| Q3 2019 | Sep 30, 2019 | 13 | +225.0% | Form 10-Q (filed 2019-11-05) ↗ |
| Q2 2019 | Jun 30, 2019 | 14 | -36.4% | Form 10-Q (filed 2019-08-06) ↗ |
| Q1 2019 | Mar 31, 2019 | 15 | -16.7% | Form 10-Q (filed 2020-05-06) ↗ |
| Q4 2018 | Dec 31, 2018 | 26 | +30.0% | Form 10-K (filed 2021-02-25) ↗ |
| Q3 2018 | Sep 30, 2018 | 4 | -81.8% | Form 10-Q (filed 2019-11-05) ↗ |
| Q2 2018 | Jun 30, 2018 | 22 | +37.5% | Form 10-Q (filed 2019-08-06) ↗ |
| Q1 2018 | Mar 31, 2018 | 18 | -5.3% | Form 10-Q (filed 2019-05-08) ↗ |
| Q4 2017 | Dec 31, 2017 | 20 | – | Form 10-K (filed 2019-02-26) ↗ |
| Q3 2017 | Sep 30, 2017 | 22 | – | Form 10-Q (filed 2018-11-06) ↗ |
| Q2 2017 | Jun 30, 2017 | 16 | – | Form 10-Q (filed 2018-08-06) ↗ |
| Q1 2017 | Mar 31, 2017 | 19 | – | Form 10-Q (filed 2018-05-09) ↗ |
Cite this data
StockData. (2026). Gilead Sciences Zydelig (idelalisib ($M), quarterly Q1 2017–Q4 2021 [Data set]. Compiled from Gilead Sciences SEC filings and investor materials. https://stockdatahq.com/stocks/gild/kpis/other-zydelig-eu
See every metric in the Gilead Sciences KPI table. Data updated Oct 29, 2026.