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TDC

TERADATA CORP /DE/ (TDC) stock: insider trades, news & valuation

Heavy selling
Close · Oct 9, 2026 $30.59 +1.0% on the day +40.8% over 12 months 52-week range $20.42 – $37.88

Share price and insider trades

TDC closeInsider buyInsider sale
203040NovDecJan 2026FebMarAprMayJunJulAugSepOctSold $190,754 on 2026-06-08 · Timothy C K ChouSold $495,000 on 2026-05-19 · Sumeet AroraSold $502,050 on 2026-05-22 · Todd McelhattonSold $602,955 on 2026-06-01 · Richard J PetleySold $634,200 on 2026-05-12 · Stephen McmillanSold $749,250 on 2026-02-24 · Michael P GianoniSold $1,139,908 on 2026-05-07 · Richard J Petley, Sumeet AroraSold $1,513,000 on 2026-02-26 · Stephen McmillanSold $1,742,510 on 2026-09-15 · Michael D Hutchinson, Stephen McmillanSold $2,497,569 on 2026-02-11 · Lynrock Lake Lp
Bought, 12 months$0
Sold, 12 months$10.1M
Insiders buying0
Insiders selling8

TERADATA CORP /DE/ insider trading at a glance (Oct 9, 2026): in the past 12 months, 0 insiders bought $0 and 8 sold $10.1M of TDC stock on the open market.

TDC insider buying and selling by quarter

Open-market purchases (green, above the line) and sales (red, below), by trade date.

Q1 2026: $4.8M sold (5 trades)Q1 2026Q2 2026: $3.6M sold (8 trades)Q2 2026Q3 2026: $1.7M sold (2 trades)Q3 2026Q4 2026
QuarterBoughtPurchasesSoldSales
Q4 2026—0—0
Q3 2026—0$1.7M2
Q2 2026—0$3.6M8
Q1 2026—0$4.8M5

Valuation, profit and volume

P/E (trailing)n/aSector median —
Market value— 
Profit margin—Revenue growth —
Volume vs. 50-day1.0×Last 5 sessions
Insiders' paper profit—On all tracked purchases —

Summary

Over the past 12 months, 0 TERADATA CORP /DE/ insiders reported open-market purchases totaling $0, while 8 insiders reported sales totaling $10.1M. 8 of 15 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.

Insider transactions

Open-market purchases and sales.

Filed Insider Type Shares Price Value Since Score
Sep 17SEC Michael D HutchinsonCOO Sell Plan 48,077171,927 held (−22%) $30.00 $1.4M +2.0% —
Sep 17SEC Stephen McmillanCEO, President Sell Plan 10,000752,446 held (−1%) $30.02 $300K +1.9% —
Jun 10SEC Timothy C K ChouDirector Sell Plan 5,65739,210 held (−13%) $33.72 $191K -9.3% —
Jun 2SEC Richard J PetleyChief Revenue Officer Sell Plan 16,237189,561 held (−8%) $35.00 $568K -12.6% —
Jun 2SEC Richard J PetleyChief Revenue Officer Sell Plan 990188,571 held (−1%) $35.01 $35K -12.6% —
May 26SEC Todd McelhattonDirector Sell 15,00026,665 held (−36%) $33.47 $502K -8.6% —
May 20SEC Sumeet AroraChief Product Officer Sell Plan 15,000250,772 held (−6%) $33.00 $495K -7.3% —
May 13SEC Stephen McmillanCEO, President Sell 20,000762,446 held (−3%) $31.71 $634K -3.5% —
May 8SEC Richard J PetleyChief Revenue Officer Sell Plan 34,317207,627 held (−14%) $30.84 $1.1M -0.8% —
May 8SEC Sumeet AroraChief Product Officer Sell Plan 2,645301,452 held (−1%) $30.84 $82K -0.8% —
Feb 27SEC Stephen McmillanCEO, President Sell 50,000663,190 held (−7%) $30.26 $1.5M +1.1% —
Feb 25SEC Michael P GianoniDirector Sell 25,00031,523 held (−44%) $29.97 $749K +2.1% —
Feb 13SEC Lynrock Lake Lp10% Owner Sell 40,8079,365,345 held (−0%) $40.24 $1.6M -24.0% —
Feb 13SEC Lynrock Lake Lp10% Owner Sell 10,6699,354,676 held (−0%) $41.19 $439K -25.7% —
Feb 13SEC Lynrock Lake Lp10% Owner Sell 10,5149,406,152 held (−0%) $39.57 $416K -22.7% —

Insiders at TERADATA CORP /DE/

InsiderBoughtSoldLast filingScore
Lynrock Lake Lp10% Owner — $2.5M Feb 13, 2026 —
Stephen McmillanCEO, President — $2.4M Sep 17, 2026 —
Richard J PetleyChief Revenue Officer — $1.7M Jun 2, 2026 —
Michael D HutchinsonCOO — $1.4M Sep 17, 2026 —
Michael P GianoniDirector — $749K Feb 25, 2026 —
Sumeet AroraChief Product Officer — $577K May 20, 2026 —
Todd McelhattonDirector — $502K May 26, 2026 —
Timothy C K ChouDirector — $191K Jun 10, 2026 —

TDC stock: common questions

Are TERADATA CORP /DE/ insiders buying TDC stock?

In the past 12 months, 0 insiders reported open-market purchases of TDC worth $0.

Are TERADATA CORP /DE/ insiders selling TDC stock?

8 insiders reported sales worth $10.1M over the same period.

Where does this data come from?

Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.

What is TDC's 52-week range?

Over the past year TDC has traded between $20.42 and $37.88. It last closed at $30.59 on Oct 9, 2026.