Sandra Wallach
Chief Financial Officer · Amprius Technologies, Inc.
- 2024
- Aug 21, 2025
- 2
Other insiders active in the same stocks
Insiders who reported open-market trades in the last 12 months at the companies Sandra Wallach files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Kang Sun - $57.62M in AMPX purchases and sales in the last 12 months
- Constantin Ionel Stefan - $8.60M in AMPX purchases and sales in the last 12 months
- Wen Hsuan Hsieh - $7.62M in AMPX purchases and sales in the last 12 months
- Steven Chu - $5.86M in AMPX purchases and sales in the last 12 months
- Donald R. Dixon - $2.54M in AMPX purchases and sales in the last 12 months
- Thomas M. Stepien - $1.34M in AMPX purchases and sales in the last 12 months
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Frequently asked questions
Who is Sandra Wallach?
Sandra Wallach is a corporate insider, tracked as Chief Financial Officer of Amprius Technologies, Inc. (AMPX). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did Sandra Wallach last file a Form 4?
The most recent primary Form 4 on record is dated 21 August 2025, one of 2 filings going back to 2024.
Has Sandra Wallach been buying or selling stock?
Recorded transactions: 0 open-market purchases and 2 open-market sales ($227K) across all tracked filings.
