United States · SEC Form 4 · Snapshot date: 2026-10-18 · Built: 2026-10-18 · 中文

US · SEC FORM 4

ATI INC

ATI · NYSE · CIK 0001018963 · Basic Materials · Metal Fabrication

INSIDER SIGNAL

No active buy signal

0 qualifying P purchase groups
in the current 180-day scoring window

48 Form 4 transaction lines observed in the same window
38 sales · 10 option, withholding, award, gift or other lines

Last qualifying purchase2020-12-10 · NEWMAN DONALD P · $210.4K

WHY NO ACTIVE SIGNAL?

Purchase activityNone

Recent buyingNone

Recent salesHigh

Buy signal statusInactive

Score anatomy

No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.

ClusterNot calculated

Purchase sizeNot calculated

RoleNot calculated

RecencyNot calculated

ConvictionNot calculated

Why is there no score?

No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
Sales and other Form 4 activity remain visible as context and do not create a negative score.

Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.

Insider activity timeline

Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.

AprMayJunJulAugSepOct

Fields Kimberly AChair, President and CEO

▼▼▼▼▼▼▼▼

Harris Timothy JSenior VP and CDIO

▼▼▼▼▼

Morehouse David JDirector

○▼

Sharma RubyDirector

○

Lydon-Rodgers JeanDirector

○

Lund Elizabeth HefleyDirector

○

● Purchase▼ Sale○ Other

Showing the six most active owners; 6 additional owner(s) remain in Form 4 evidence.

Purchase breadth, concentration & cluster buying

These modules activate when qualifying purchases enter the 180-day research window.

SIGNAL HISTORY

No recorded active-signal snapshot

Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2020-12-10 · NEWMAN DONALD P.

Recent Form 4 activity

0Purchases

55Sales

43Other Form 4 lines

43SEC filings · 365 days

BUYING0 qualifying P line(s) · 180 days

SELLING38 sale line(s) · context only

OTHER10 exercise / withholding / award / gift / other lines

10b5-1 / PLANNEDNot assessed

P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.

Market context

Market context provides additional background on recent price performance and risk. It does not affect the Insider Signal.

Price performance

1M: -3.6%
3M: +4.4%
6M: +18.3%
12M: +128.6%

Volatility & liquidity

Volatility: 45.1%
Beta: —
Avg daily value: USD 318.7M

Valuation

Market cap: USD 26.1B
P/E: 64.6×

Fundamentals

Profit margin: 8.8%
ROE: 22.4%
Industry: Metal Fabrication

Market data

Price data up to: 2026-10-09 · Price source: OpenBB/yfinance; volume from price cache (yfinance) · From SEC filings: Market cap, P/E, Profit margin, ROE · Fiscal year ended: 2025-12-28 · Market cap is the shares outstanding stated on the filing cover multiplied by the latest close. Share count date: 2026-08-03 · Status: PASS

Short interest

Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.

Shares short: 4,739,175
Previous report: 4,335,143
Avg daily volume: 1,709,366
Days to cover: 2.8

FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.

Historical equity purchases

Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.

Transaction date	Reporting owner	Type	Security	Shares	Avg. price	Approx. value	Source
2020-12-10	NEWMAN DONALD P	Purchase (P)	Common Stock, $0.10 per share	12,500	USD 16.83	USD 210,375	SEC filing ↗
2020-03-16	WETHERBEE ROBERT S	Purchase (P)	Common Stock, par value $0.10 per share	2,500	USD 8.70	USD 21,750	SEC filing ↗
2020-03-16	Kah Marianne	Purchase (P)	Common Stock, par value $0.10 per share	2,000	USD 8.91	USD 17,820	SEC filing ↗

Form 4 evidence

98 transaction lines in the latest 365-day window; 476 in local history.

Date	Owner	Type	Security	Shares	Avg. price	Approx. value	Source
2026-09-21	Harris Timothy J	Sale (S)	Common Stock, par value $0.10 per share	9,000	USD 191.82	USD 1,726,380	SEC filing ↗
2026-09-14	Harris Timothy J	Sale (S)	Common Stock, par value $0.10 per share	16,500	USD 193.06	USD 3,185,490	SEC filing ↗
2026-09-08	Harris Timothy J	Sale (S)	Common Stock, par value $0.10 per share	16,500	USD 207.54	USD 3,424,410	SEC filing ↗

Show recent Form 4 evidence (30 grouped rows)

Date	Owner	Type	Security	Shares	Avg. price	Approx. value	Source
2026-09-21	Harris Timothy J	Sale (S)	Common Stock, par value $0.10 per share	9,000	USD 191.82	USD 1,726,380	SEC filing ↗
2026-09-14	Harris Timothy J	Sale (S)	Common Stock, par value $0.10 per share	16,500	USD 193.06	USD 3,185,490	SEC filing ↗
2026-09-08	Harris Timothy J	Sale (S)	Common Stock, par value $0.10 per share	16,500	USD 207.54	USD 3,424,410	SEC filing ↗
2026-09-02	Morehouse David J	Sale (S)	Common Stock, par value $0.10 per share	2,485	USD 201.61	USD 501,001	SEC filing ↗
2026-08-31	Harris Timothy J	Sale (S)	Common Stock, par value $0.10 per share	16,500	USD 210.01	USD 3,465,165	SEC filing ↗
2026-08-24	Harris Timothy J	Sale (S)	Common Stock, par value $0.10 per share	16,500	USD 206.92	USD 3,414,180	SEC filing ↗
2026-08-17	Fields Kimberly A	Sale (S)	Common Stock, par value $0.10 per share	24,845	USD 231.19	USD 5,744,009	SEC filing ↗
2026-07-28	Fields Kimberly A	Sale (S)	Common Stock, par value $0.10 per share	31,757	USD 190.99	USD 6,065,269	SEC filing ↗
2026-07-07	Fields Kimberly A	Sale (S)	Common Stock, par value $0.10 per share	40,000	USD 182.91	USD 7,316,218	SEC filing ↗
2026-07-01	Foster James Robert	Option exercise / conversion (M)	Common Stock, par value $0.10 per share	163	USD 193.82	USD 31,593	SEC filing ↗
2026-06-24	Fields Kimberly A	Sale (S)	Common Stock, par value $0.10 per share	3,783	USD 197.21	USD 746,045	SEC filing ↗
2026-06-23	Fields Kimberly A	Sale (S)	Common Stock, par value $0.10 per share	3,641	USD 197.48	USD 719,025	SEC filing ↗
2026-06-22	Fields Kimberly A	Sale (S)	Common Stock, par value $0.10 per share	13,269	USD 202.48	USD 2,686,707	SEC filing ↗
2026-06-02	Fields Kimberly A	Sale (S)	Common Stock, par value $0.10 per share	59,749	USD 179.07	USD 10,698,980	SEC filing ↗
2026-05-19	Sharma Ruby	Award / grant (A)	Common Stock, par value $0.10 per share	905	USD 0.00	USD 0	SEC filing ↗
2026-05-19	Morehouse David J	Award / grant (A)	Common Stock, par value $0.10 per share	1,743	USD 0.00	USD 0	SEC filing ↗
2026-05-19	Lydon-Rodgers Jean	Award / grant (A)	Common Stock, par value $0.10 per share	905	USD 0.00	USD 0	SEC filing ↗
2026-05-19	Lund Elizabeth Hefley	Award / grant (A)	Common Stock, par value $0.10 per share	905	USD 0.00	USD 0	SEC filing ↗
2026-05-19	Kah Marianne	Award / grant (A)	Common Stock, par value $0.10 per share	905	USD 0.00	USD 0	SEC filing ↗
2026-05-19	Hess David P	Award / grant (A)	Common Stock, par value $0.10 per share	905	USD 0.00	USD 0	SEC filing ↗
2026-05-19	Corvi Carolyn	Award / grant (A)	Common Stock, par value $0.10 per share	905	USD 0.00	USD 0	SEC filing ↗
2026-05-19	Carlisle Herbert J	Award / grant (A)	Common Stock, par value $0.10 per share	905	USD 0.00	USD 0	SEC filing ↗
2026-05-19	BALL M LEROY	Award / grant (A)	Common Stock, par value $0.10 per share	905	USD 0.00	USD 0	SEC filing ↗
2026-05-11	Fields Kimberly A	Sale (S)	Common Stock, par value $0.10 per share	40,000	USD 159.21	USD 6,368,238	SEC filing ↗
2026-03-20	Bhatia Vaishali S.	Tax withholding (F)	Common Stock, par value $0.10 per share	3,509	USD 143.95	USD 505,121	SEC filing ↗
2026-03-09	Morehouse David J	Sale (S)	Common Stock, par value $0.10 per share	6,609	USD 154.25	USD 1,019,464	SEC filing ↗
2026-03-02	Miller Michael Benjamin	Tax withholding (F)	Common Stock, par value $0.10 per share	413	USD 164.00	USD 67,732	SEC filing ↗
2026-02-17	WETHERBEE ROBERT S	Sale (S)	Common Stock, par value $0.10 per share	49,562	USD 145.40	USD 7,206,343	SEC filing ↗
2026-02-17	BALL M LEROY	Gift (G)	Common Stock, par value $0.10 per share	350	USD 0.00	USD 0	SEC filing ↗
2026-02-10	WETHERBEE ROBERT S	Sale (S)	Common Stock, par value $0.10 per share	10,438	USD 146.67	USD 1,530,941	SEC filing ↗

Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.

Snapshot & identity

Snapshot date	2026-10-18
Ranking version	US-v1.2
Data quality	PASS ELIGIBLE · —
Ticker	ATI
CIK	0001018963
Sector	Basic Materials
Industry	Metal Fabrication Yahoo Finance
SEC SIC	3317 Steel Pipe & Tubes
Exchange	NYSE

Data coverage

Local Form 4 history	476 transaction lines from 2020-01-06 to 2026-09-21 3 P purchase lines · 106 S sale lines · 367 other lines
SEC company submissions	Open SEC filings ↗

Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.