ATI Inc. (ATI) Insider Trading

Over the last 3 months, ATI insiders made 0 open-market buys and 24 sales, a net sale of -$37.0M (SEC Form 4). Over the last 6 months, 550 institutions increased and 425 reduced their position (13F).

Insider Activity

Sentiment
0/100
Buys (3m)
0
Sells (3m)
24
Net (3m)
-$37.0M
Insider trades by month Buys Sells
Feb
Mar
May
Jun
Jul
Aug
Context3-month price +24.6%Institutions accumulating (13F)
DateInsiderTypeSharesPrice
Aug 26, 2026Harris Timothy Jofficer: Senior VP and CDIOSell16,500$206.92
Aug 19, 2026Fields Kimberly Adirector, officer: Chair, President and CEOSell8,131$230.66
Aug 19, 2026Fields Kimberly Adirector, officer: Chair, President and CEOSell2,000$229.56
Aug 19, 2026Fields Kimberly Adirector, officer: Chair, President and CEOSell9,116$231.72
Aug 19, 2026Fields Kimberly Adirector, officer: Chair, President and CEOSell1,000$228.32
Aug 19, 2026Fields Kimberly Adirector, officer: Chair, President and CEOSell4,598$232.43
Jul 30, 2026Fields Kimberly Adirector, officer: Chair, President and CEOSell31,757$190.99
Jul 9, 2026Fields Kimberly Adirector, officer: Chair, President and CEOSell2,000$179.25
Jul 9, 2026Fields Kimberly Adirector, officer: Chair, President and CEOSell4,878$184.34
Jul 9, 2026Fields Kimberly Adirector, officer: Chair, President and CEOSell400$187.50
Jul 9, 2026Fields Kimberly Adirector, officer: Chair, President and CEOSell11,826$182.66
Jul 9, 2026Fields Kimberly Adirector, officer: Chair, President and CEOSell200$180.85
Jul 9, 2026Fields Kimberly Adirector, officer: Chair, President and CEOSell15,908$183.50
Jul 9, 2026Fields Kimberly Adirector, officer: Chair, President and CEOSell2,200$181.36
Jul 9, 2026Fields Kimberly Adirector, officer: Chair, President and CEOSell388$185.10
Jul 6, 2026Foster James Robertofficer: SVP, Finance and CFOOption163$193.82
Jun 24, 2026Fields Kimberly Adirector, officer: Chair, President and CEOSell13,269$202.48
Jun 24, 2026Fields Kimberly Adirector, officer: Chair, President and CEOSell3,783$197.21
Jun 24, 2026Fields Kimberly Adirector, officer: Chair, President and CEOSell3,641$197.48
Jun 4, 2026Fields Kimberly Adirector, officer: Chair, President and CEOSell1,896$180.80
Jun 4, 2026Fields Kimberly Adirector, officer: Chair, President and CEOSell13,865$179.05
Jun 4, 2026Fields Kimberly Adirector, officer: Chair, President and CEOSell3,001$182.75
Jun 4, 2026Fields Kimberly Adirector, officer: Chair, President and CEOSell25,823$177.97
Jun 4, 2026Fields Kimberly Adirector, officer: Chair, President and CEOSell2,000$181.90
Jun 4, 2026Fields Kimberly Adirector, officer: Chair, President and CEOSell13,164$179.71
May 21, 2026BALL M LEROYdirectorGrant905—
May 21, 2026Carlisle Herbert JdirectorGrant905—
May 21, 2026Kah MariannedirectorGrant905—
May 21, 2026Lund Elizabeth HefleydirectorGrant905—
May 21, 2026Lydon-Rodgers JeandirectorGrant905—

Source: ATI SEC Form 4 filings, latest Aug 26, 2026. For informational purposes only — not investment advice.

Institutional activity (13F)

How institutions changed their ATI positions over the last 6 months (SEC Form 13F).

Increased
550
New positions
340
Reduced
425
Sold out
54
Largest moves
InstitutionActionSharesFiled
BlackRock, Inc.Increased18.7MAug 7, 2026
BLACKROCK, INC.Increased16.4MMay 13, 2026
VANGUARD PORTFOLIO MANAGEMENT LLCIncreased6.2MAug 13, 2026
VANGUARD CAPITAL MANAGEMENT LLCIncreased6.2MAug 13, 2026
CAPITAL RESEARCH GLOBAL INVESTORSIncreased6.2MMay 13, 2026
VANGUARD CAPITAL MANAGEMENT LLCNew Position6.1MMay 15, 2026
CAPITAL INTERNATIONAL INVESTORSReduced5.9MMay 13, 2026
VANGUARD PORTFOLIO MANAGEMENT LLCNew Position5.8MMay 8, 2026
CAPITAL WORLD INVESTORSReduced5.7MMay 13, 2026
STATE STREET CORPReduced5.4MMay 15, 2026
Capital World InvestorsReduced5.2MAug 12, 2026
FMR LLCIncreased5.2MMay 15, 2026
STATE STREET CORPReduced5.2MAug 7, 2026
Capital Research Global InvestorsReduced5.1MAug 12, 2026
FMR LLCReduced5.0MAug 13, 2026

Source: SEC Form 13F filings. For informational purposes only — not investment advice.

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