Michael R. Niggli's most recent trade in ESS Tech Inc was a trade of 13,513 Common Stock done . Disclosure was reported to the exchange on Oct. 13, 2025.
| Stock | Client Name | Client Category | Action | Reported to Exchange | Quantity | Post Transaction Holding | Traded % | Avg. Price | Value | Security Type |
|---|---|---|---|---|---|---|---|---|---|---|
| ESS Tech Inc | Michael R. Niggli | Director | 13 Oct 2025 | 13,513 | 90,825 | - | 0 | Common Stock | ||
| ESS Tech Inc | Michael R. Niggli | Director | 29 Aug 2024 | 11,852 | 0 | - | - | Stock Option (right to buy) | ||
| ESS Tech Inc | Michael R. Niggli | Director | 29 Aug 2024 | 11,852 | 77,312 | - | 6.9 | 81,542 | Common Stock | |
| ESS Tech Inc | Michael R. Niggli | Director | 17 May 2024 | 202,702 | 951,896 | - | 0 | Common Stock | ||
| Pacific Gas & Electric | Michael R. Niggli | Director | 17 May 2024 | 9,677 | 58,845 (0%) | 0% | 0 | Common Stock | ||
| ESS Tech Inc | Michael R. Niggli | Director | 19 May 2023 | 135,373 | 749,194 | - | 0 | Common Stock | ||
| Pacific Gas & Electric | Michael R. Niggli | Director | 19 May 2023 | 10,836 | 49,149 (0%) | 0% | 0 | Common Stock | ||
| ESS Tech Inc | Michael R. Niggli | Director | 16 May 2023 | 10,000 | 613,821 | - | 0.8 | 8,104 | Common Stock | |
| ESS Tech Inc | Michael R. Niggli | Director | 12 May 2023 | 20,000 | 603,821 | - | 1.1 | 22,592 | Common Stock | |
| ESS Tech Inc | Michael R. Niggli | Director | 06 Mar 2023 | 5,000 | 583,821 | - | 1.7 | 8,250 | Common Stock | |
| ESS Tech Inc | Michael R. Niggli | Director | 15 Dec 2022 | 19,100 | 578,821 | - | 2.6 | 48,896 | Common Stock | |
| ESS Tech Inc | Michael R. Niggli | Director | 01 Jun 2022 | 29,486 | 559,721 | - | 0 | Common Stock | ||
| Pacific Gas & Electric | Michael R. Niggli | Director | 19 May 2022 | 11,532 | 38,313 (0%) | 0% | 0 | Common Stock | ||
| ESS Tech Inc | Michael R. Niggli | Director | 01 Mar 2022 | 20,000 | 530,235 | - | 5.0 | 100,168 | Common Stock | |
| ESS Tech Inc | Michael R. Niggli | Director | 09 Nov 2021 | 77,822 | 568,302 | - | 10 | 778,220 | Common Stock | |
| ESS Tech Inc | Michael R. Niggli | Director | 09 Nov 2021 | 65,752 | 480,166 | - | 10 | 657,520 | Common Stock | |
| ESS Tech Inc | Michael R. Niggli | Director | 09 Nov 2021 | 31,140 | 227,400 | - | 10 | 311,400 | Common Stock | |
| ESS Tech Inc | Michael R. Niggli | Director | 09 Nov 2021 | 30,053 | 510,219 | - | 0 | Common Stock | ||
| ESS Tech Inc | Michael R. Niggli | Director | 09 Nov 2021 | 11,670 | 85,225 | - | 10 | 116,700 | Common Stock | |
| ESS Tech Inc | Michael R. Niggli | Director | 09 Nov 2021 | 11,670 | 85,225 | - | 10 | 116,700 | Common Stock | |
| ESS Tech Inc | Michael R. Niggli | Director | 09 Nov 2021 | 11,670 | 85,225 | - | 10 | 116,700 | Common Stock | |
| ESS Tech Inc | Michael R. Niggli | Director | 09 Nov 2021 | 11,670 | 85,225 | - | 10 | 116,700 | Common Stock |