Kline Russell

CFO

Insider activity · 24 months1 buy0 salesCumulative net flow

Nov 24 · 0 buys · 0 salesDec 24 · 0 buys · 0 salesJan 25 · 0 buys · 0 salesFeb 25 · 0 buys · 0 salesMar 25 · 0 buys · 0 salesApr 25 · 0 buys · 0 salesMay 25 · 0 buys · 0 salesJun 25 · 0 buys · 0 salesJul 25 · 0 buys · 0 salesAug 25 · 1 buy · 0 salesSept 25 · 0 buys · 0 salesOct 25 · 0 buys · 0 salesNov 25 · 0 buys · 0 salesDec 25 · 0 buys · 0 salesJan 26 · 0 buys · 0 salesFeb 26 · 0 buys · 0 salesMar 26 · 0 buys · 0 salesApr 26 · 0 buys · 0 salesMay 26 · 0 buys · 0 salesJun 26 · 0 buys · 0 salesJul 26 · 0 buys · 0 salesAug 26 · 0 buys · 0 salesSept 26 · 0 buys · 0 salesOct 26 · 0 buys · 0 sales

Total declarations

Company

▲ Purchases (3 ops.)

€11k

▼ Sales (0 ops.)

—

Latest filing published 02 Sept 2025 for 374Water Inc.. Read the official filing

Filing timeline

BuySale

Kline Russell

Insider track record

Disclosed buys

Disclosed sells

T+90 hit rate

T+90 mean return

-18.2%

Across 1 buy signal with a settled T+90 return. Return basis: close on the day after publication.

Signal history

Kline Russell: trading record in brief

Kline Russell is a declared insider of 374Water Inc., with filings sourced from SEC (Form 4). Over a trading history stretching from 15 January 2025 to 16 December 2025, the count stands at 5 filings.

On the market, this insider has only ever bought: 3 purchases, €11k in total. Buying on the open market means paying the going price with one's own funds, a different act from receiving shares as pay. Outside the open market, there are 2 share grants.

The median purchase comes to €3,743. Clusters matter here: 3 out of 3 purchases overlapped with buying by a colleague within 30 days. Purchases made close together by different insiders form what is called a cluster.

On 18 December 2025 came the latest disclosure, an open-market purchase for €3,743 in 374Water Inc. Filings reach the SEC (Form 4) feed a median of 2 days after the trade. US insiders must file a Form 4 within two business days of a trade. Every figure here comes from the filings published by SEC (Form 4) and describes the past, not future prices; it is not investment advice.