David A. Duffield

Activist investor & 5%+ owner · SC 13D/13G filings

Total Filings

5

Stocks Covered

1

Latest Filing

Feb 13, 2026

Filings

WDAY

Workday, Inc.

SC 13G/A · Feb 13, 2026

19.0%

49.4M shares

WDAY

Workday, Inc.

SC 13G/A · Feb 12, 2025

19.3%

51.2M shares

WDAY

WORKDAY, INC.

SC 13G/A · Feb 13, 2024

20.4%

53.6M shares

WDAY

WORKDAY, INC.

SC 13G/A · Feb 14, 2023

21.0%

53.9M shares

WDAY

WORKDAY, INC.

SC 13G/A · Feb 11, 2022

27.2%

55.1M shares