Janet L Walsh
CIK 1507172 · View on SEC EDGAR ↗
Insider
First SEC filing: Dec. 8, 2010 · Latest: Dec. 8, 2010
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 2 non-open-market transactions below
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
2 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Aug. 8, 2011 | MTX | P | 20 | $54.80 | $1,096 | 20 Direct | — | Acquired | 158.0% (price as of 2026-08-20) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II)
Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| Jan. 26, 2011 | MTX | Deferred Restricted Stock Units (DRSUs) | Common Stock (2,793) | — | — | 2,793 | Acquired |
| Jan. 26, 2011 | MTX | Employee Stock Option (Right to Buy) | Common Stock (5,560) | $64.46 | Jan. 26, 2021 | 5,560 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 1 holding
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Dec. 8, 2010 | MTX | Common Stock | 0 | Direct |