Companies › ATI
ATI INC (ATI)
Institutional ownership, SEC filings and insider activity
Sector: Raw materials · SEC CIK 0001018963 · EDGAR filings · Updated 2026-07-28
ATI INC (ATI) has reported institutional ownership of 93.3%, with 669 institutional managers holding positions valued at $18.5B per the latest 13F reporting period. SEC filings include an active material impairment disclosure (8-K Item 2.06). The company has 5 bond series in the registry.
Filings this week (1)
- 2026-07-28 — Notice of proposed sale filed (Form 144)
Every filing links to the official SEC document. Real-time filing alerts for this company are available inside the app.
Latest updates
- 2026-07-09 — Insider transaction reported (Form 4)
- 2026-07-07 — Notice of proposed sale filed (Form 144)
- 2026-07-06 — Insider transaction reported (Form 4)
- 2026-06-24 — Insider transaction reported (Form 4)
- 2026-06-24 — Notice of proposed sale filed (Form 144)
- 2026-06-23 — Notice of proposed sale filed (Form 144)
- 2026-06-22 — Notice of proposed sale filed (Form 144)
- 2026-06-17 — 11-K filed
Institutional ownership overview
According to SEC 13F filings tracked by Sightfile, ATI INC has 669 institutional holders and institutional ownership of 93.3%.
| # | Institution | Reported value | % of tracked total |
|---|---|---|---|
| 1 | BlackRock, Inc. | $2.39B | 12.9% |
| 2 | Capital Research Global Investors | $896.0M | 4.8% |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | $890.8M | 4.8% |
| 4 | Capital International Investors | $854.9M | 4.6% |
| 5 | VANGUARD PORTFOLIO MANAGEMENT LLC | $846.8M | 4.6% |
| 6 | Capital World Investors | $831.0M | 4.5% |
| 7 | STATE STREET CORP | $782.7M | 4.2% |
| 8 | FMR LLC | $763.3M | 4.1% |
| 9 | Invesco Ltd. | $560.8M | 3.0% |
| 10 | VIKING GLOBAL INVESTORS LP | $484.8M | 2.6% |
Full holder history and quarter-over-quarter changes are available inside the app.
Insider activity
Insiders reported 77 transactions (0 buys, 35 sells) across 17 reporting insiders, with a net reported value of −$53.7M.
Quarterly net insider value, as reported in Form 4 filings.
Data flags from SEC filings
Debt profile
5 active bond series in the registry, coupons ranging 4.88%–7.25%, maturities through 2033, built from the company's own prospectus filings.
Debt maturity schedule
Principal coming due by year for ATI INC, from the company's own SEC prospectus filings (424B) tracked by Sightfile.
| Year | Bond series maturing | Known principal due |
|---|---|---|
| 2027 | 1 | — |
| 2029 | 1 | — |
| 2030 | 1 | $425.0M |
| 2031 | 1 | — |
| 2033 | 1 | — |
Coupons, seniority and prospectus links for each series are available inside the app.
Fails-to-deliver
The SEC's fails-to-deliver file for 2026-06-29 reports 6,070,401 failed-to-deliver shares ($21.8M) for ATI — an official data point published by the SEC, shown as reported.
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See full history, cross-references and alerts on SightfileData sources: SEC EDGAR (filings, 13F, FTD), aggregated by Sightfile. Page updated 2026-07-28.