Michael R. Niggli

Companies

• ESS Tech, Inc.Board member Oct 18, 2021 to now¹
• PG&E CorporationBoard member Jul 10, 2020 to May 21, 2024²

Holdings

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

Shares held

• PEPG&E Corporation PCG58,846 shares³$777.1K at $13.21May 17, 2024
• ETESS Tech, Inc. GWHT96,232 shares⁴$7.8K at $0.08Oct 13, 2025

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

Recent filings

• Oct 13, 2025Granted 13,513 shares of ESS Tech, Inc.⁴
• Aug 29, 2024Exercised options 11,852 shares at $6.88 of ESS Tech, Inc.⁵
• May 17, 2024Granted 9,677 shares of PG&E Corporation³
• May 17, 2024Granted 202,702 shares of ESS Tech, Inc.⁶
• May 19, 2023Granted 10,836 shares of PG&E Corporation⁷
• May 19, 2023Granted 135,373 shares of ESS Tech, Inc.⁸
• May 16, 2023Bought 10,000 shares at $0.81 of ESS Tech, Inc.⁹
• May 12, 2023Bought 20,000 shares at $1.13 of ESS Tech, Inc.¹⁰
• Mar 6, 2023Bought 5,000 shares at $1.65 of ESS Tech, Inc.¹¹
• Dec 15, 2022Bought 19,100 shares at $2.56 of ESS Tech, Inc.¹²
• Jun 1, 2022Granted 29,486 shares of ESS Tech, Inc.¹³
• May 19, 2022Granted 11,532 shares of PG&E Corporation¹⁴
• Mar 1, 2022Bought 20,000 shares at $5.01 of ESS Tech, Inc.¹⁵
• Nov 15, 2021Granted 30,053 shares of ESS Tech, Inc.¹⁶
• Nov 9, 2021Other 11,670 shares at $10.00 of ESS Tech, Inc.¹⁷
• Nov 9, 2021Other 11,670 shares at $10.00 of ESS Tech, Inc.¹⁷
• Nov 9, 2021Other 11,670 shares at $10.00 of ESS Tech, Inc.¹⁷
• Nov 9, 2021Other 11,670 shares at $10.00 of ESS Tech, Inc.¹⁷
• Nov 9, 2021Other 31,140 shares at $10.00 of ESS Tech, Inc.¹⁷
• Nov 9, 2021Other 77,822 shares at $10.00 of ESS Tech, Inc.¹⁶
• Nov 9, 2021Other 65,752 shares at $10.00 of ESS Tech, Inc.¹⁷