We’re proud to share that Diana Ostroff has been named to City & State New York’s 2026 “50 Over 50” list—an annual recognition highlighting experienced leaders who continue to shape New York’s civic and policy landscape.

As Chief Operating Officer at Ostroff Associates, Diana is the steady hand behind the systems, strategy, and day-to-day operations that keep our firm moving with focus and purpose. She leads with clarity, discipline, and an unwavering commitment to excellence  by delivering results for our clients.

Diana’s leadership is defined by consistency: building strong internal processes, supporting the growth and development of our staff, and strengthening the culture that makes high-impact work sustainable. In addition to guiding firm operations, she also manages one of our largest client portfolios, to which she brings a wealth of experience and a reputation for sound judgment to every challenge.

This recognition is a testament not only to Diana’s career achievements, but to the influence of operational leadership that often happens behind the scenes. Diana drives outcomes, empowers her teams, and sets the standard for others to follow.

Congratulations, Diana! The entire 50 Over 50 list can be viewed here.

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