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ATIAti Inc · Insider ownership research

Ati Inc insiders sold $79.6M in the past 12 months. How much of their stake is that?

Insiders sold $79.6M in the past 12 months.98% was sold under disclosed trading plans, 2% with no plan disclosed. The largest seller, Kimberly Fields (Chair, President and CEO, Director), sold $42.2M.Share-of-stake figures for this company are being verified and will be added when that check is finished. Why

Updated Oct 13, 2026 from SEC filings · covers Oct 14, 2025 to Oct 13, 2026
$1.8M
sold with no plan disclosed, past 12 months
98%
of sales were under disclosed trading plans, past 12 months
5 of 17
officers and directors sold shares, past 12 months
Is this normal? More than usual: about 4x the 5-year average. 5 insiders sold; the average is 3 a year. Year by year
Latest filing: Filed Sep 23 for a sale on Sep 21. Timothy Harris sold 9K shares ($1.7M) under a disclosed plan. Filing
SEC ownership filings: 52 filed in the 12 months to Oct 13, 2026; 1,015 on record since Jun 16, 2000 · See the evidence

What stands out

David Morehouse sold $1.5M of stock with no disclosed trading plan. The filings don't state a reason.Largest such sale, Mar 9, 2026

A share of stake is shown for 0 of the 5 officers and directors who sold. 17 are left out

i
Left out: Kimberly Fields, Robert Wetherbee, Timothy Harris, Brett Harvey, Carolyn Corvi, Vaishali Bhatia, David Morehouse, Herbert Carlisle, Leroy Ball, Marianne Kah, David Hess, James Foster, Tina Busch, Michael Miller, Ruby Sharma, Elizabeth Lund and Jean Lydon-Rodgers (share of stake is being verified).
Disclosed company stock is not an insider's whole wealth.

Who sold, and how much of their stake

Officers and directors, past 12 months. Their share of stake is being verified and is not shown yet; amounts and trading plans are below.

Kimberly Fields
Chair, President and CEO, Director
Not confirmed
Share of stake not shown: share of stake is being verified. Why
$42.2MDisclosed plan
Timothy Harris
Senior VP and CDIO
Not confirmed
Share of stake not shown: share of stake is being verified. Why
$19.3MDisclosed plan
Robert Wetherbee
Executive Chairman, Director
Not confirmed
Share of stake not shown: share of stake is being verified. Why
$16.3MDisclosed plan
David Morehouse
Director
Not confirmed
Share of stake not shown: share of stake is being verified. Why
$1.5MNo plan disclosed
Tina Busch
SVP, CHRO
Not confirmed
Share of stake not shown: share of stake is being verified. Why
$242KNo plan disclosed
Amounts, filings and trading plans for each seller

Selling by month

Officers and directors, Oct 2025 to Oct 2026. Each sale is counted once: under a disclosed plan, else to cover taxes, else no plan disclosed.

Disclosed planNo plan disclosedOne dollar scale for every month; the tallest bar is labeled
Oct 2025: $1.8M under a disclosed planOctNov 2025: $10.0M under a disclosed planNov 2025: $242K no plan disclosedNovDec 2025: $5.9M under a disclosed planDecJanFeb 2026: $4.5M under a disclosed planFebMar 2026: $1.0M no plan disclosedMarAprMay 2026: $6.4M under a disclosed planMayJun 2026: $14.9M under a disclosed plan$14.9MJunJul 2026: $13.4M under a disclosed planJulAug 2026: $12.6M under a disclosed planAugSep 2026: $8.3M under a disclosed planSep 2026: $501K no plan disclosedSepOct

Recent activity

Past 30 days, Sep 14, 2026 to Oct 13, 2026
Sep 21, 2026Timothy Harris sold 9K shares ($1.7M) under a disclosed trading plan.
WhoSharesPrice% of total stakeTotal stake afterTrade dateFiled
Timothy Harris
Senior VP and CDIO
9,000$191.82n/an/aSep 21, 2026Sep 23, 2026
Sep 14, 2026Timothy Harris sold 17K shares ($3.2M) under a disclosed trading plan.
WhoSharesPrice% of total stakeTotal stake afterTrade dateFiled
Timothy Harris
Senior VP and CDIO
16,500$193.06n/an/aSep 14, 2026Sep 16, 2026

"% of total stake" is the shares in an event against all the vested shares the person held that day, across every share class and holding entity, after that day's vesting. "n/a" means the person's holdings are not confirmed, or the row is a purchase. "Holdings record incomplete" means more shares were sold than the filings show the person held that day, so a percentage would be wrong.

Common questions

Is the Ati Inc CEO selling stock?

Yes. Kimberly Fields sold 238K shares ($42.2M) in the past 12 months, all of it under a trading plan disclosed in the filings.

Why are Ati Inc insiders selling?

Filings rarely give a reason, and we don't guess at one. What they show is how the sales were made: 98% of sales by value ran under 10b5-1 trading plans disclosed in the filings and 2% had no disclosed plan. A trading plan schedules sales in advance.

Are any Ati Inc insiders buying?

No. Officers and directors reported no purchases in the past 12 months.

The evidence

Who sold5 officers and directors: amount, % of holdings, trading plan
Who soldAmount% of holdingsTrading plan
Kimberly Fields
Chair, President and CEO, Director
$42.2M
238K shares
Not confirmed
share of stake is being verified. Why
Disclosed plan
Timothy Harris
Senior VP and CDIO
$19.3M
117K shares
Not confirmed
share of stake is being verified. Why
Disclosed plan
Robert Wetherbee
Executive Chairman, Director
$16.3M
145K shares
Not confirmed
share of stake is being verified. Why
Disclosed plan
David Morehouse
Director
$1.5M
9.1K shares
Not confirmed
share of stake is being verified. Why
No plan disclosed
Tina Busch
SVP, CHRO
$242K
2.6K shares
Not confirmed
share of stake is being verified. Why
No plan disclosed
The full ownership picture0 of 17 officers and directors confirmed

Vested shares across all share classes, held directly and through trusts, LLCs and family members, as reported on SEC Forms 3, 4 and 5. Unvested awards and options are never counted as owned shares.

InsiderHeld Oct 13, 2025SoldHeld Oct 13, 2026Still held
Kimberly Fields
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Kimberly Fields are complete.
Chair, President and CEO, Director
n/a−238Kn/an/a
Vesting, gifts, unvested awards and holding lines for Kimberly Fields

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Kimberly Fields are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
−78Kwithheld by the company for taxes
Robert Wetherbee
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. See the filing Sales and other transactions for Robert Wetherbee are complete.
Executive Chairman, Director
n/a−145Kn/an/a
Vesting, gifts, unvested awards and holding lines for Robert Wetherbee

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Robert Wetherbee are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
−158Kwithheld by the company for taxes
Timothy Harris
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Timothy Harris are complete.
Senior VP and CDIO
n/a−117Kn/an/a
Vesting, gifts, unvested awards and holding lines for Timothy Harris

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Timothy Harris are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
−55Kwithheld by the company for taxes
Brett Harvey
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Brett Harvey are complete.
Director
n/a0n/an/a
Vesting, gifts, unvested awards and holding lines for Brett Harvey

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Brett Harvey are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
Carolyn Corvi
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Carolyn Corvi are complete.
Director
n/a0n/an/a
Vesting, gifts, unvested awards and holding lines for Carolyn Corvi

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Carolyn Corvi are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
Vaishali Bhatia
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Vaishali Bhatia are complete.
SVP, General Counsel and CCO
n/a0n/an/a
Vesting, gifts, unvested awards and holding lines for Vaishali Bhatia

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Vaishali Bhatia are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
−5.5Kwithheld by the company for taxes
David Morehouse
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. See the filing Sales and other transactions for David Morehouse are complete.
Director
n/a−9.1Kn/an/a
Vesting, gifts, unvested awards and holding lines for David Morehouse

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for David Morehouse are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
Herbert Carlisle
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Herbert Carlisle are complete.
Director
n/a0n/an/a
Vesting, gifts, unvested awards and holding lines for Herbert Carlisle

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Herbert Carlisle are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
Leroy Ball
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Leroy Ball are complete.
Director
n/a0n/an/a
Vesting, gifts, unvested awards and holding lines for Leroy Ball

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Leroy Ball are complete; balances and unit counts will be added when the check is finished.

−535gifted (net of own trusts)
Marianne Kah
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Marianne Kah are complete.
Director
n/a0n/an/a
Vesting, gifts, unvested awards and holding lines for Marianne Kah

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Marianne Kah are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
David Hess
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for David Hess are complete.
Director
n/a0n/an/a
Vesting, gifts, unvested awards and holding lines for David Hess

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for David Hess are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
James Foster
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for James Foster are complete.
SVP, Finance and CFO
n/a0n/an/a
Vesting, gifts, unvested awards and holding lines for James Foster

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for James Foster are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
−24Kwithheld by the company for taxes
Tina Busch
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Tina Busch are complete.
SVP, CHRO
n/a−2.6Kn/an/a
Vesting, gifts, unvested awards and holding lines for Tina Busch

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Tina Busch are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
Michael Miller
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Michael Miller are complete.
VP Chief Accounting Officer
n/a0n/an/a
Vesting, gifts, unvested awards and holding lines for Michael Miller

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Michael Miller are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
−787withheld by the company for taxes
Ruby Sharma
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Ruby Sharma are complete.
Director
n/a0n/an/a
Vesting, gifts, unvested awards and holding lines for Ruby Sharma

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Ruby Sharma are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
Elizabeth Lund
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Elizabeth Lund are complete.
Director
n/a0n/an/a
Vesting, gifts, unvested awards and holding lines for Elizabeth Lund

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Elizabeth Lund are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
Jean Lydon-Rodgers
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Jean Lydon-Rodgers are complete.
Director
n/a0n/an/a
Vesting, gifts, unvested awards and holding lines for Jean Lydon-Rodgers

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Jean Lydon-Rodgers are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)

Holdings and share of stake for Ati Inc are being verified, so no balances, unit counts or percentages are shown. Sales, proceeds, plan and tax status, titles and dates come straight from individual filings.

What explains the selling$79.6M of sales by plan status, purpose, seller and month

Officer and director open-market sales: $79.6M across 512,197 shares. Plan status and stated purpose are separate questions, and a sale can have both.

By plan status

The lighter segment is sales with no plan disclosed in the filing ($1.8M), including tax-related sales outside a plan.

No plan disclosed · $1.8M

Sales with no 10b5-1 plan and no tax reference in the filing. $1.5M of it is David Morehouse. No plan disclosed is a statement about the filing, not about why the sale happened. Largest such sale: David Morehouse, Mar 9, 2026

Taxes

320,892 shares ($39.0M) were withheld by the company for taxes, which isn't a market sale.

Charitable gifts · 535 shares

Gifts the filings describe as charitable. Gifts are not sales and are not included in the sale totals.

SellerShares soldProceedsUnder a disclosed planShare of totalSales dates
Kimberly Fields
Chair, President and CEO, Director
238K$42.2M100%53%Oct 15, 2025 to Aug 17, 2026
Timothy Harris
Senior VP and CDIO
117K$19.3M100%24%Nov 4, 2025 to Sep 21, 2026
Robert Wetherbee
Executive Chairman, Director
145K$16.3M100%21%Nov 18, 2025 to Feb 17, 2026
David Morehouse
Director
9.1K$1.5M0%2%Mar 9, 2026 to Sep 2, 2026
Tina Busch
SVP, CHRO
2.6K$242K0%0.3%Nov 21, 2025 to Nov 21, 2025

Sales by month

MonthSale proceedsDisclosed planTo cover taxesNo plan disclosed
Oct 2025$1.8M$1.8M$0$0
Nov 2025$10.2M$10.0M$0$242K
Dec 2025$5.9M$5.9M$0$0
Jan 2026$0$0$0$0
Feb 2026$4.5M$4.5M$0$0
Mar 2026$1.0M$0$0$1.0M
Apr 2026$0$0$0$0
May 2026$6.4M$6.4M$0$0
Jun 2026$14.9M$14.9M$0$0
Jul 2026$13.4M$13.4M$0$0
Aug 2026$12.6M$12.6M$0$0
Sep 2026$8.8M$8.3M$0$501K
Oct 2026$0$0$0$0
Is this normal? Selling year by year5 earlier years to compare with

More than usual: about 4x the 5-year average. 5 insiders sold; the average is 3 a year.

12 months endingShares soldInsiders who soldProceeds
Oct 13, 2026
Latest 12 months
512K5$79.6M
Oct 13, 2025
1 year earlier
420K4$30.5M
Oct 13, 2024
2 years earlier
97K3$4.9M
Oct 14, 2023
3 years earlier
90K4$3.3M
Oct 14, 2022
4 years earlier
68K4$1.9M
Oct 14, 2021
5 years earlier
43K2$979K

Open-market sales (Form 4 code S) by people who were officers or directors, in split-adjusted shares. Earlier years include people who have since left. A sale that an outside holder also reports (a family trust, a fund) is counted with outside holders in every year. Shares, not dollars, are compared, so a change in the stock price doesn't look like a change in selling. Years the filings don't fully cover are shown but left out of the average.

Known gaps and uncertainty17 officers and directors not confirmed

Holdings and share of stake are being verified. Balances, unit counts and every share-of-stake figure for Ati Inc are held back until that check is finished. Sales, proceeds, plan and tax status, titles and dates come straight from individual filings and are complete.

External context: we only cite outside events when a documented connection exists. None is shown for this period.

Sources and methodology1,015 filings on record, 52 filed in the 12-month period, and how we read them

All 1,015 Forms 3, 4 and 5 on record for Ati Inc (SEC CIK 1018963), filed from Jun 16, 2000 to Sep 23, 2026; 52 of them were filed in the 12 months this page covers, retrieved from SEC EDGAR on Oct 13, 2026. Prices are the ones reported in each filing, often weighted averages. 42 older filings exist only on paper and could not be read.

Holdings. Each holding line (a share class plus an owner, such as a trust or LLC) carries its last reported balance forward. Entities first reported during the period start at zero, so transfers between an insider's own trusts don't count as selling. Lines not reported for three years or more are listed separately and left out of totals.

Sales. A sale counts as under a 10b5-1 plan if its footnote cites one or the filing's Rule 10b5-1 box is checked, and as tax-related if its footnote cites tax obligations or sell-to-cover. Shares withheld by the company for taxes are listed separately. Sales with neither attribute are labeled "no plan disclosed".

Full methodology

Former or inactive filers (39)No filing in 18 months; last reported balances, not in any total
NameLast filedLast reported balance
Donald NewmanJan 7, 2025249,191 shares, last reported balance as of Jan 6, 2025
Jimmy Williams Jr.Jan 7, 202511,620 shares, last reported balance as of Jan 3, 2025
Netta WashingtonMay 3, 202411,894 shares, last reported balance as of May 1, 2024
Elliot DavisMar 4, 2024430,490 shares, last reported balance as of Feb 29, 2024
James DiggsSep 12, 202383,055 shares, last reported balance as of Sep 8, 2023
Karl SchwartzSep 14, 2022189,095 shares, last reported balance as of Sep 12, 2022
Kevin KramerApr 18, 2022379,047 shares, last reported balance as of Apr 14, 2022
Elizabeth PowersMar 2, 2022346,397 shares, last reported balance as of Feb 28, 2022
Diane CreelMay 19, 2020116,996 shares, last reported balance as of May 15, 2020
John PipskiMay 19, 202089,480 shares, last reported balance as of May 15, 2020
James RohrMay 14, 2020161,825 shares, last reported balance as of May 12, 2020
John SimsFeb 28, 2020682,825 shares, last reported balance as of Feb 27, 2020
Richard HarshmanMar 1, 20191,595,415 shares, last reported balance as of Feb 28, 2019
Patrick DeCourcyMar 1, 2019287,093 shares, last reported balance as of Feb 28, 2019
Barabara JeremiahJan 28, 2019102,936 shares, last reported balance as of Jan 24, 2019
John TurnerDec 7, 201886,780 shares, last reported balance as of Dec 5, 2018
Louis ThomasMay 12, 201628,165 shares, last reported balance as of May 10, 2016
Hunter DaltonFeb 1, 2016160,884 shares, last reported balance as of Jan 28, 2016
Terry DunlapOct 28, 201496,190 shares, last reported balance as of Oct 24, 2014
Michael JoyceMay 6, 201318,114 shares, last reported balance as of May 2, 2013
Dale ReidMar 4, 201397,906 shares, last reported balance as of Feb 28, 2013
Gary VromanMar 4, 201327,241 shares, last reported balance as of Feb 28, 2013
David HoganFeb 24, 201290,066 shares, last reported balance as of Feb 22, 2012
Patrick HasseyFeb 28, 2011657,705 shares, last reported balance as of Feb 24, 2011
Jon WaltonFeb 28, 2011183,732 shares, last reported balance as of Feb 24, 2011
Lynn DavisFeb 2, 201166,409 shares, last reported balance as of Jan 31, 2011
Douglas KittenbrinkJan 28, 200985,075 shares, last reported balance as of Jan 26, 2009
Kent BowenMay 13, 20084,650 shares, last reported balance as of May 9, 2008
Craig McClellandMay 4, 20076,464 shares, last reported balance as of May 2, 2007
Robert BozzoneMay 4, 20074,169,041 shares, last reported balance as of May 2, 2007
Jack ShillingFeb 23, 200718,807 shares, last reported balance as of Feb 21, 2007
Charles Queenan Jr.Jan 5, 2005358,401 shares, last reported balance as of Jan 3, 2005
Frank CahouetJul 6, 2004No balance on record
Frederick FetterolfJan 6, 200415,062 shares, last reported balance as of Jan 2, 2004
Paul BrentlingerJan 6, 200412,939 shares, last reported balance as of Jan 2, 2004
William OuchiJan 6, 2004No balance on record
James MurdySep 15, 2003187,479 shares, last reported balance as of Sep 11, 2003
Brian SimmonsNo balance on record
George KourpiasNo balance on record

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