Comparable stake leader
BlackRock, Inc.
SEC ownership of ATI INC
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001018963.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
19 May 2026
- Public ticker
- ATI on NYSE
- Parsed ownership sources
- 13F, 13D/G, and 3/4/5
- Largest SEC-reported holder
- BlackRock, Inc.
- Latest 13D/G holder
- BlackRock, Inc.
- Latest parsed ownership date
- 19 May 2026
- Issuer CIK
- 0001018963
- Issuer location
- Dallas, TX
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
2 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of ATI INC (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
BlackRock, Inc.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
19 May 2026
13F
13D/G
3/4/5
Lead comparable stake: 10%
13D/G row: BlackRock, Inc.
Showing 1-8 of 50 holder rows.
Quick read
BlackRock, Inc. leads the comparable SEC ownership view at 10%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens BlackRock, Inc.'s linked filing trail.
Comparable ownership
Top 5
BlackRock, Inc.
10%
VANGUARD CAPITAL MANAGEMENT LLC
5.2%
Capital International Investors
4.5%
Capital World Investors
4.2%
FMR LLC
3.5%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
13D/G
Company
|
10%
from 13D/G
|
$2,391,602,818
16,441,653 shares
|
— | 31 Mar 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
13F
Vanguard Capital Management · Company
|
5.2%
|
$1,039,376,430
7,145,445 shares
|
$0 | 31 Mar 2026 |
| Capital International Investors |
13D/G
13F
Company
|
4.5%
|
$897,410,093
6,169,480 shares
|
-$1,668,273,680 | 31 Mar 2026 |
| Capital World Investors |
13D/G
13F
Company
|
4.2%
|
$936,790,809
5,719,812 shares
|
-$358,563,063 | 31 Mar 2026 |
| FMR LLC |
13F
13D/G
Company
|
3.5%
from 13D/G
|
$763,254,091
5,247,175 shares
|
— | 31 Mar 2026 |
| David J. Morehouse |
3/4/5
Director
|
0.03%
|
$5,572,718
38,311 shares
|
-$1,618,384 | 19 May 2026 |
| Leroy M. Ball Jr. |
3/4/5
Director
|
0.03%
|
$5,052,844
34,737 shares
|
— | 19 May 2026 |
| Tina K. Busch |
3/4/5
SVP, CHRO
|
0.02%
|
$1,984,013
21,274 shares
|
-$242,289 | 21 Nov 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$48,845,587.
Buys
$4,875,188
Insiders: 1
Sells
$53,720,776
Insiders: 5
Net
-$48,845,587
Shares: -447,842
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 34,882
Shares: 482,724
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 99,749 | $0 | $17,067,217 | -$17,067,217 |
| 3-6 | 34,882 | 91,747 | $4,875,188 | $11,458,073 | -$6,582,884 |
| 6-9 | 0 | 167,387 | $0 | $15,431,132 | -$15,431,132 |
| 9-12 | 0 | 123,841 | $0 | $9,764,354 | -$9,764,354 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 25 reporting-owner rows connected to ATI INC. Open a relationship link for the CIK-to-CIK filing trail.
Rows
25
Largest Forms 3/4/5 holder
Kimberly A. Fields
Net 12M change
-$44,649,064
Latest report
02 Jun 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Kimberly A. Fields | Chair, President and CEO, Director | $39,842,058 | -$23,486,297 | -37% | Filing P/S | 02 Jun 2026 |
| Robert S. Wetherbee | Executive Chairman, Director | $39,545,655 | -$15,196,740 | -28% | Filing P/S | 17 Feb 2026 |
| Donald P. Newman | EVP and CFO | $22,208,825 | Mixed | 03 Jan 2025 | ||
| Timothy J. Harris | Senior VP and CDIO | $19,758,681 | -$4,105,354 | -17% | Mixed | 05 Jan 2026 |
| Carolyn Corvi | Director | $13,717,747 | Mixed | 19 May 2026 | ||
| J. Brett Harvey | Director | $9,973,867 | Mixed | 20 May 2025 | ||
| Vaishali S. Bhatia | SVP, General Counsel and CCO | $9,554,591 | Mixed | 20 Mar 2026 | ||
| Herbert J. Carlisle | Director | $7,181,899 | Mixed | 19 May 2026 | ||
| Elizabeth C. Powers | Senior VP, CHRO | $7,112,012 | Mixed | 28 Feb 2022 | ||
| James Robert Foster | SVP, Finance and CFO | $7,021,065 | Mixed | 05 Jan 2026 | ||
| Kevin B. Kramer | Sr. VP, CCMO | $6,804,763 | Mixed | 14 Apr 2022 | ||
| Marianne Kah | Director | $6,699,146 | Mixed | 19 May 2026 | ||
| David P. Hess | Director | $6,582,782 | Mixed | 19 May 2026 | ||
| Elliot S. Davis | Chief Legal & Compl. Officer | $6,087,277 | Filing P/S | 29 Feb 2024 | ||
| David J. Morehouse | Director | $5,572,718 | -$1,618,384 | -23% | Median | 19 May 2026 |
| Leroy M. Ball Jr. | Director | $5,052,844 | Median | 19 May 2026 | ||
| Karl D. Schwartz | VP, Controller & CAO | $2,666,630 | Mixed | 12 Sep 2022 | ||
| Tina K. Busch | Svp, Chro | $1,984,013 | -$242,289 | -11% | Filing P/S | 21 Nov 2025 |
| James C. Diggs | Director | $1,977,314 | Mixed | 08 Sep 2023 | ||
| Ruby Sharma | Director | $1,291,768 | Mixed | 19 May 2026 |
Recent insider transactions for ATI INC
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Kimberly A. Fields | ATI | Common Stock, par value $0.10 per share | Sale | -21.5% | $10,698,980 | $179.07 | -59,749 | 218,014 | 02 Jun 2026 | Direct |
| Ruby Sharma | ATI | Common Stock, par value $0.10 per share | Award | 14.2% | 905 | 7,285 | 19 May 2026 | Direct | ||
| David J. Morehouse | ATI | Common Stock, par value $0.10 per share | Award | 4.77% | 1,743 | 38,311 | 19 May 2026 | Direct | ||
| Jean Lydon-Rodgers | ATI | Common Stock, par value $0.10 per share | Award | 143.4% | 905 | 1,536 | 19 May 2026 | Direct | ||
| Elizabeth H. Lund | ATI | Common Stock, par value $0.10 per share | Award | 143.4% | 905 | 1,536 | 19 May 2026 | Direct | ||
| Marianne Kah | ATI | Common Stock, par value $0.10 per share | Award | 2.65% | 905 | 35,075 | 19 May 2026 | Direct | ||
| David P. Hess | ATI | Common Stock, par value $0.10 per share | Award | 2.66% | 905 | 34,945 | 19 May 2026 | Direct | ||
| Carolyn Corvi | ATI | Common Stock, par value $0.10 per share | Award | 1.29% | 905 | 71,146 | 19 May 2026 | Direct | ||
| Herbert J. Carlisle | ATI | Common Stock, par value $0.10 per share | Award | 2.47% | 905 | 37,556 | 19 May 2026 | Direct | ||
| Leroy M. Ball Jr. | ATI | Common Stock, par value $0.10 per share | Award | 2.67% | 905 | 34,737 | 19 May 2026 | Direct | ||
| Kimberly A. Fields | ATI | Common Stock, par value $0.10 per share | Sale | -12.6% | $6,368,238 | $159.21 | -40,000 | 277,763 | 11 May 2026 | Direct |
| Vaishali S. Bhatia | ATI | Common Stock, par value $0.10 per share | Tax liability | -5.67% | -3,509 | 58,420 | 20 Mar 2026 | Direct | ||
| David J. Morehouse | ATI | Common Stock, par value $0.10 per share | Sale | -14.8% | $1,019,464 | $154.25 | -6,609 | 38,168 | 09 Mar 2026 | Direct |
| Michael B. Miller | ATI | Common Stock, par value $0.10 per share | Tax liability | -5.13% | -413 | 7,639 | 02 Mar 2026 | Direct | ||
| Leroy M. Ball Jr. | ATI | Common Stock, par value $0.10 per share | Gift | -1.02% | -350 | 33,832 | 17 Feb 2026 | Direct | ||
| Robert S. Wetherbee | ATI | Common Stock, par value $0.10 per share | Sale | 11.4% | $4,195,715 | $146.07 | 28,724 | 280,061 | 17 Feb 2026 | Direct |
| Robert S. Wetherbee | ATI | Common Stock, par value $0.10 per share | Sale | -6.32% | $3,010,628 | $144.48 | -20,838 | 308,785 | 17 Feb 2026 | Direct |
| Robert S. Wetherbee | ATI | Common Stock, par value $0.10 per share | Sale | -3.73% | $1,530,941 | $146.67 | -10,438 | 269,623 | 10 Feb 2026 | Direct |
| James Robert Foster | ATI | Common Stock, par value $0.10 per share | Tax liability | -29.4% | -23,544 | 56,561 | 05 Jan 2026 | Direct | ||
| James Robert Foster | ATI | Common Stock, par value $0.10 per share | Options Exercise | 129.1% | 42,265 | 75,014 | 05 Jan 2026 | Direct | ||
| James Robert Foster | ATI | Common Stock, par value $0.10 per share | Award | 18% | 9,644 | 63,078 | 05 Jan 2026 | Direct | ||
| James Robert Foster | ATI | Performance Stock Unit | Options Exercise | -50% | -25,641 | 25,641 | 05 Jan 2026 | Direct | ||
| Robert S. Wetherbee | ATI | Common Stock, par value $0.10 per share | Award | 63.2% | 185,276 | 478,551 | 05 Jan 2026 | Direct | ||
| Robert S. Wetherbee | ATI | Common Stock, par value $0.10 per share | Tax liability | -35% | -158,297 | 293,275 | 05 Jan 2026 | Direct | ||
| Robert S. Wetherbee | ATI | Common Stock, par value $0.10 per share | Options Exercise | 362,644 | 186,538 | 05 Jan 2026 | Direct | |||
| Robert S. Wetherbee | ATI | Performance Stock Unit | Options Exercise | -50% | -64,103 | 64,102 | 05 Jan 2026 | Direct | ||
| Michael B. Miller | ATI | Common Stock, par value $0.10 per share | Tax liability | -4.44% | -374 | 8,052 | 05 Jan 2026 | Direct | ||
| Michael B. Miller | ATI | Common Stock, par value $0.10 per share | Award | 11.3% | 854 | 8,426 | 05 Jan 2026 | Direct | ||
| Kimberly A. Fields | ATI | Common Stock, par value $0.10 per share | Tax liability | -22.2% | -78,251 | 274,927 | 05 Jan 2026 | Direct | ||
| Kimberly A. Fields | ATI | Common Stock, par value $0.10 per share | Options Exercise | 45.8% | 98,620 | 313,798 | 05 Jan 2026 | Direct | ||
| Kimberly A. Fields | ATI | Common Stock, par value $0.10 per share | Award | 36.1% | 94,726 | 357,143 | 05 Jan 2026 | Direct | ||
| Kimberly A. Fields | ATI | Performance Stock Unit | Options Exercise | -50% | -35,898 | 35,897 | 05 Jan 2026 | Direct | ||
| Timothy J. Harris | ATI | Common Stock, par value $0.10 per share | Tax liability | -28% | -54,560 | 140,511 | 05 Jan 2026 | Direct | ||
| Timothy J. Harris | ATI | Common Stock, par value $0.10 per share | Options Exercise | 69.8% | 70,442 | 171,429 | 05 Jan 2026 | Direct | ||
| Timothy J. Harris | ATI | Common Stock, par value $0.10 per share | Award | 35.6% | 48,995 | 186,829 | 05 Jan 2026 | Direct | ||
| Timothy J. Harris | ATI | Performance Stock Unit | Options Exercise | -50% | -25,641 | 25,641 | 05 Jan 2026 | Direct | ||
| Vaishali S. Bhatia | ATI | Common Stock, par value $0.10 per share | Tax liability | -3.04% | -1,944 | 61,929 | 05 Jan 2026 | Direct | ||
| Vaishali S. Bhatia | ATI | Common Stock, par value $0.10 per share | Award | 5.19% | 3,152 | 63,873 | 05 Jan 2026 | Direct | ||
| Robert S. Wetherbee | ATI | Common Stock, par value $0.10 per share | Sale | 5.12% | $679,474 | $110.34 | 6,158 | 126,518 | 18 Dec 2025 | Direct |
| Robert S. Wetherbee | ATI | Common Stock, par value $0.10 per share | Sale | -28.9% | $5,897,039 | $109.48 | -53,862 | 132,676 | 18 Dec 2025 | Direct |
| Kimberly A. Fields | ATI | Performance Stock Unit | Award | 34,188 | 34,188 | 05 Dec 2025 | Direct | |||
| Vaishali S. Bhatia | ATI | Performance Stock Unit | Award | 6,837 | 6,837 | 05 Dec 2025 | Direct | |||
| Timothy J. Harris | ATI | Performance Stock Unit | Award | 6,837 | 6,837 | 05 Dec 2025 | Direct | |||
| Michael B. Miller | ATI | Performance Stock Unit | Award | 1,709 | 1,709 | 05 Dec 2025 | Direct | |||
| Timothy J. Harris | ATI | Common Stock, par value $0.10 per share | Sale | -9.68% | $1,031,851 | $97.88 | -10,542 | 98,310 | 25 Nov 2025 | Direct |
| Tina K. Busch | ATI | Common Stock, par value $0.10 per share | Sale | -10.9% | $242,289 | $93.26 | -2,598 | 21,274 | 21 Nov 2025 | Direct |
| Leroy M. Ball Jr. | ATI | Common Stock, par value $0.10 per share | Gift | -0.54% | -185 | 34,182 | 19 Nov 2025 | Direct | ||
| Jean Lydon-Rodgers | ATI | Common Stock, par value $0.10 per share | Award | 631 | 631 | 19 Nov 2025 | Direct | |||
| Elizabeth H. Lund | ATI | Common Stock, par value $0.10 per share | Award | 631 | 631 | 19 Nov 2025 | Direct | |||
| Robert S. Wetherbee | ATI | Common Stock, par value $0.10 per share | Sale | -19.6% | $5,900,155 | $98.34 | -60,000 | 246,538 | 18 Nov 2025 | Direct |
* marks a reported price that did not pass the local price check.