Gary Birkenbeuel

Companies

• Tetra TechBoard member Aug 1, 2018 to now¹

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• Tetra Tech TTEK51,032 shares²$1.8M at $34.78Jan 12, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• Jan 12, 2026Granted 4,397 shares of Tetra Tech²
• Jan 12, 2026Exercised options 1,590 shares of Tetra Tech²
• Aug 14, 2025Sold 2,390 shares at $36.00 of Tetra Tech³
• Jan 1, 2025Exercised options 2,050 shares of Tetra Tech²
• Jan 1, 2025Granted 5,270 shares of Tetra Tech²
• Aug 20, 2024Exercised options 243 shares at $59.90 of Tetra Tech⁴
• Aug 20, 2024Exercised options 243 shares at $59.90 of Tetra Tech⁴
• Nov 18, 2022Granted 1,710 shares of Tetra Tech⁵
• Nov 23, 2021Granted 2,310 shares of Tetra Tech⁶