NIGGLI MICHAEL R

GWH

NIGGLI MICHAEL R serves as Director at ESS Tech, Inc. (GWH). This page tracks their complete SEC Form 4 insider trading history including stock purchases and sales.

Total Buys

5 trades

$188.0K

Total Sells

0 trades

$0.00

Net Position

Net Buyer

$188.0K

Companies Traded

GWH

Active Period

Mar 2022 – May 2023

5 total trades

Most Recent

Buy GWH

May 17, 2023 · $8.1K

NIGGLI MICHAEL R's Insider Trading at ESS Tech, Inc. (GWH)

Buys

5 · $188.0K

Sells

0 · $0.00

Total Shares Bought

74,100

Total Shares Sold

GWH Price Chart

Loading chart...

Date	Type	Shares	Avg Price	Value	Shares After
May 17, 2023	Buy	10,000	$0.81	$8.1K	613,821
May 15, 2023	Buy	20,000	$1.13	$22.6K	603,821
Mar 7, 2023	Buy	5,000	$1.65	$8.3K	583,821
Dec 16, 2022	Buy	19,100	$2.56	$48.9K	578,821
Mar 3, 2022	Buy	20,000	$5.01	$100.2K	530,235

Related Insiders

Drew P Buckley

director, officer: CEO

GWHBuy · Jun 8, 2026

Kelly F. Goodman

officer: SEE REMARKS

GWHSell · May 26, 2026

Kate Eileen Suhadolnik

officer: Chief Financial Officer

GWHSell · May 26, 2026

Explore More Insider Trading Data

GWH Insider Trading Activity

View all insider trades at ESS Tech, Inc.

Industrials Sector Insider Trades

See insider activity across industrials stocks

Latest Insider Buys

Most recent insider purchases across all stocks

CEO Stock Purchases

Track CEO buying activity