Donald Jeffrey Sieb

With great love and deep sadness, we announce the passing of Donald Jeffrey Sieb, who left us on November 18, 2025, after bravely battling cancer. Don faced every challenge with strength, courage, humor, and unwavering determination, qualities that defined his character and touched everyone who knew him.

Born on June 6, 1947, to George R. Sieb and Helen Brossard Sieb in Gary, Indiana, Don embraced life with curiosity and a spirit of adventure. His family's frequent relocations to Hawaii instilled in him a lifelong love for boating, sailing, and the sea.

Don found great happiness in his time around marinas and cherished all types of boats. His diverse interests reflected his thoughtful and easygoing spirit, whether deep-sea diving, riding Harleys and e-bikes, landscaping, listening to music, traveling, exploring art galleries, reading, or relaxing in hot tubs. He also never passed up a Diet Coke or a chocolate chip cookie- small pleasures that reliably brightened his day.

An innovative entrepreneur, always on the cutting edge of new technologies and a lifelong learner, Don was renowned for his sharp mind and passion for business. His creative and determined nature inspired colleagues, friends, and family alike. He traveled extensively, embracing new experiences and opportunities.

Above all, Don loved his family deeply. He is survived by his wife of 36 years, Donna; his children, Jeff (Shannon), Ryan (Sherri), Scott, Mark (Danielle), and Lindsey (Brian); and his grandchildren, Kaiya, Courtney, Greg, Andrea, Autumn, Nola, and Cora, whom he delighted in watching grow. He is also survived by his siblings, Bronwyn, Toni (Jim), George (Shelly), and John (JaNeil), all of whom he held close to his heart.

Don will be remembered for his kindness, generosity, humor, and the steady, genuine love he offered to others. His legacy lives on in the countless memories he created and the lives he touched. He will be forever loved and deeply missed.

You are invited to share memories, stories, or messages of comfort as we celebrate Don’s remarkable life.