Over the last 12 months, MATERION insiders reported no purchases and 4 sales totaling $765K across SEC Form 4 filings.
| Date | Insider | Type | Shares | Avg price | Value | Δ stake | Marks |
|---|---|---|---|---|---|---|---|
| May 29, 2026 | PHILLIPPY ROBERT JD | ▼ Sale | 356 | $220.3 | $78K | -8.9% | — |
| May 29, 2026 | PHILLIPPY ROBERT JD | ▼ Sale | 740 | $219.54 | $162K | -15.5% | — |
| May 29, 2026 | PHILLIPPY ROBERT JD | ▼ Sale | 1,084 | $218.59 | $237K | -18.5% | — |
| May 29, 2026 | PHILLIPPY ROBERT JD | ▼ Sale | 1,320 | $217.67 | $287K | -18.4% | — |
Corporate insiders — officers, directors and 10%+ owners — must report their trades to the SEC on Form 4 within two business days. We group each filing's transactions into one economic event (a laddered 10b5-1 sale is one event, not 25 rows), flag pre-arranged plans and late filings, and link every event to its AI-scored article in the $MTRN feed.