MATERION Corp
MTRN- Exchange
- NYSE
- Industry
- Metal Forgings & Stampings
- SEC CIK
- 0001104657
In the last 90 days, MATERION Corp insiders filed 0 open-market purchases and 5 sales; 406 institutions reported holding it in 13F filings for Q2 2026, worth $6.04B in total; superinvestors Soros Fund Management and ARK Invest hold it.
Holders of 5% or more of MTRN
Holders whose latest Schedule 13D or 13G filing reports 5% or more of MATERION Corp, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| BlackRock, Inc. | 13G/A | 15.00%3.11M shares | – | Apr 30, 20251 filing | Apr 30, 2025 | SEC |
| Vanguard Portfolio Management LLC | 13G | 6.53%1.36M shares | New | Apr 29, 20261 filing | Apr 29, 2026 | SEC |
| State Street Corp | 13G | 6.20%1.30M shares | New | Aug 11, 20251 filing | Aug 11, 2025 | SEC |
| Vanguard Capital Management LLC | 13G | 5.20%1.08M shares | New | Apr 30, 20261 filing | Apr 30, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
9 Schedule 13D and 13G filings on MATERION Corp, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| May 14, 202610:19 AM ET | Capital Research Global Investors | 13G/A | 3.80%789.9K shares | −5.10 ppfrom 8.90%Below 5% | Mar 31, 2026 | SEC |
| Apr 30, 202611:33 AM ET | Vanguard Capital Management LLC | 13G | 5.20%1.08M shares | New | Mar 31, 2026 | SEC |
| Apr 29, 20262:18 PM ET | Vanguard Portfolio Management LLC | 13G | 6.53%1.36M shares | New | Mar 31, 2026 | SEC |
| Mar 27, 202610:29 AM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | −11.30 ppfrom 11.30%Below 5% | Mar 13, 2026 | SEC |
| Jan 30, 20262:19 PM ET | Vanguard Group Inc | 13G/A | 11.30%2.34M shares | – | Dec 31, 2025 | SEC |
| Aug 11, 20257:29 AM ET | State Street Corp | 13G | 6.20%1.30M shares | New | Jun 30, 2025 | SEC |
| Jul 15, 20254:03 PM ET | Dimensional Fund Advisors LP | 13G/A | 4.90%1.01M shares | –Below 5% | Jun 30, 2025 | SEC |
| Apr 30, 202510:10 AM ET | BlackRock, Inc. | 13G/A | 15.00%3.11M shares | – | Mar 31, 2025 | SEC |
| Feb 13, 20252:15 PM ET | Capital Research Global Investors | 13G/A | 8.90%1.84M shares | – | Dec 31, 2024 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell MATERION Corp shares.
No Form 144 notices for MATERION Corp are on file.