Comparable stake leader
BlackRock, Inc.
SEC ownership of TERADATA CORP /DE/
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0000816761.
Disclosed value leader
Lynrock Lake LP
Comparable rows
50/50
Latest evidence
30 Jun 2026
- Public ticker
- TDC on NYSE
- Parsed ownership sources
-
13F, 13D/G, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
BlackRock, Inc.
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
BlackRock, Inc.
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
30 Jun 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0000816761
- Issuer location
- San Diego, CA
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of TERADATA CORP /DE/ (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
Lynrock Lake LP
Comparable rows
50/50
Latest evidence
30 Jun 2026
13F
13D/G
3/4/5
Lead comparable stake: 13%
13D/G row: BlackRock, Inc.
Showing 1-8 of 50 holder rows.
Quick read
BlackRock, Inc. leads the comparable SEC ownership view at 13%.
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.
13%
VANGUARD PORTFOLIO MANAGEMENT LLC
11%
Lynrock Lake LP
6.6%
AMERIPRISE FINANCIAL INC
4.8%
Stephen McMillan
0.81%
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
|
13%
from 13D/G
|
$321,685,114
12,551,116 shares
|
— | 31 Mar 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13D/G
13F
Vanguard Portfolio Management · Company
|
11%
|
$346,151,466
9,989,653 shares
|
+$24,914,866 | 30 Jun 2026 |
| Lynrock Lake LP |
3/4/5
13D/G
13F
10%+ Owner · Company
|
6.6%
from 13D/G
|
$385,335,007
9,354,676 shares
|
-$2,497,507 | 11 Feb 2026 |
| AMERIPRISE FINANCIAL INC |
13F
13D/G
Company
|
4.8%
from 13D/G
|
$106,542,303
4,156,928 shares
|
— | 31 Mar 2026 |
| Stephen McMillan |
3/4/5
President and CEO, Director
|
0.81%
|
$24,175,561
762,446 shares
|
-$2,147,283 | 12 May 2026 |
| John Ederer |
3/4/5
Chief Financial Officer
|
0.39%
|
$9,442,758
368,426 shares
|
— | 18 May 2026 |
| Sumeet Arora |
3/4/5
Chief Product Officer
|
0.27%
|
$8,275,476
250,772 shares
|
-$576,572 | 18 May 2026 |
| Michael D. Hutchinson |
3/4/5
Chief Operating Officer
|
0.23%
|
$6,531,918
220,004 shares
|
— | 03 Mar 2026 |
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: -$8,324,551.
Buys
$0
Insiders: 0
Sells
$8,324,551
Insiders: 7
Net
-$8,324,551
Shares: -246,836
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 246,836
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 109,846 | $0 | $3,564,794 | -$3,564,794 |
| 3-6 | 0 | 136,990 | $0 | $4,759,757 | -$4,759,757 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 25 reporting-owner rows connected to TERADATA CORP /DE/. Open a relationship link for the CIK-to-CIK filing trail.
Rows
25
Largest Forms 3/4/5 holder
Lynrock Lake LP
Net 12M change
-$8,324,551
Latest report
15 Jun 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Lynrock Lake LP | 10%+ Owner | $385,335,007 | -$2,497,507 | -0.64% | Filing P/S | 11 Feb 2026 |
| Stephen McMillan | President and CEO, Director | $24,175,561 | -$2,147,283 | -8.2% | Filing P/S | 12 May 2026 |
| Mark Culhane | Chief Financial Officer | $12,423,490 | Mixed | 27 May 2021 | ||
| John Ederer | Chief Financial Officer | $9,442,758 | Mixed | 18 May 2026 | ||
| Sumeet Arora | Chief Product Officer | $8,275,476 | -$576,572 | -6.5% | Filing P/S | 18 May 2026 |
| Richard J. Petley | Chief Revenue Officer | $6,601,323 | -$1,661,288 | -20% | Filing P/S | 01 Jun 2026 |
| Michael D. Hutchinson | Chief Operating Officer | $6,531,918 | Mixed | 03 Mar 2026 | ||
| Scot Frazier Rogers | Chief Administrative Officer | $5,552,406 | Mixed | 15 Jun 2026 | ||
| Todd Cione | Chief Revenue Officer | $4,635,962 | Mixed | 06 Mar 2024 | ||
| T. Fu Cary | Director | $3,661,083 | Mixed | 10 May 2022 | ||
| Margaret A. Treese | Chief Legal Officer | $3,268,974 | Mixed | 06 Mar 2025 | ||
| Kathleen R. Cullen-Cote | Chief People Officer | $3,265,136 | Filing P/S | 06 Mar 2025 | ||
| John Schwarz | Director | $2,833,883 | Mixed | 14 May 2026 | ||
| Charles T. Smotherman | Interim Chief Financial Ofcr | $2,695,815 | Mixed | 25 Mar 2025 | ||
| Jacqueline D. Woods | Chief Marketing Officer | $2,588,145 | Mixed | 06 Mar 2025 | ||
| Claire Bramley | Chief Financial Officer | $2,489,192 | Filing P/S | 10 Mar 2025 | ||
| Lisa R. Bacus | Director | $2,150,203 | Mixed | 14 May 2026 | ||
| Hillary Ashton | Chief Product Officer | $1,942,998 | Filing P/S | 07 Nov 2024 | ||
| Joanne Beth Olsen | Director | $1,768,495 | Mixed | 14 May 2026 | ||
| Kimberly K. Nelson | Director | $1,588,419 | Mixed | 14 May 2026 |
Recent insider transactions for TERADATA CORP /DE/
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Scot Frazier Rogers | TDC | Common Stock | Tax liability | -9.79% | -23,513 | 216,637 | 15 Jun 2026 | Direct | ||
| Timothy C. K. Chou | TDC | Common Stock | Sale | -12.6% | $190,754 | $33.72 | -5,657 | 39,210 | 08 Jun 2026 | Direct |
| Richard J. Petley | TDC | Common Stock | Sale | -8.37% | $602,952 | $35.00 | -17,227 | 188,571 | 01 Jun 2026 | Direct |
| Todd McElhatton | TDC | Common Stock | Sale | -36% | $502,022 | $33.47 | -15,000 | 26,665 | 22 May 2026 | Direct |
| Sumeet Arora | TDC | Common Stock | Sale | -5.64% | $495,000 | $33.00 | -15,000 | 250,772 | 19 May 2026 | Direct |
| Sumeet Arora | TDC | Common Stock | Tax liability | -11.8% | -35,680 | 265,772 | 18 May 2026 | Direct | ||
| John Ederer | TDC | Common Stock | Tax liability | -3.5% | -13,355 | 368,426 | 18 May 2026 | Direct | ||
| Lisa R. Bacus | TDC | Common Stock | Award | 11.7% | 8,790 | 83,894 | 14 May 2026 | Direct | ||
| Michael P. Gianoni | TDC | Common Stock | Award | 27.9% | 8,790 | 40,313 | 14 May 2026 | Direct | ||
| Kimberly K. Nelson | TDC | Common Stock | Award | 16.5% | 8,790 | 61,975 | 14 May 2026 | Direct | ||
| Joanne Beth Olsen | TDC | Common Stock | Award | 14.6% | 8,790 | 69,001 | 14 May 2026 | Direct | ||
| Melissa B. Fisher | TDC | Common Stock | Award | 228.3% | 8,790 | 12,640 | 14 May 2026 | Direct | ||
| John Schwarz | TDC | Common Stock | Award | 8.64% | 8,790 | 110,569 | 14 May 2026 | Direct | ||
| Timothy C. K. Chou | TDC | Common Stock | Award | 24.4% | 8,790 | 44,867 | 14 May 2026 | Direct | ||
| Todd McElhatton | TDC | Common Stock | Award | 26.7% | 8,790 | 41,665 | 14 May 2026 | Direct | ||
| Richard J. Petley | TDC | Common Stock | Tax liability | -0.88% | -1,829 | 205,798 | 13 May 2026 | Direct | ||
| Stephen McMillan | TDC | Common Stock | Sale | -2.56% | $634,158 | $31.71 | -20,000 | 762,446 | 12 May 2026 | Direct |
| Sumeet Arora | TDC | Common Stock | Sale | -0.87% | $81,572 | $30.84 | -2,645 | 301,452 | 07 May 2026 | Direct |
| Richard J. Petley | TDC | Common Stock | Sale | -14.2% | $1,058,336 | $30.84 | -34,317 | 207,627 | 07 May 2026 | Direct |
| Stephen McMillan | TDC | Common Stock | Other | -0.56% | -4,376 | 782,446 | 09 Mar 2026 | Direct | ||
| Stephen McMillan | TDC | Common Stock | Tax liability | -2.75% | -22,230 | 786,822 | 06 Mar 2026 | Direct | ||
| Michael D. Hutchinson | TDC | Common Stock | Tax liability | -1.67% | -3,727 | 220,004 | 06 Mar 2026 | Direct | ||
| Richard J. Petley | TDC | Common Stock | Tax liability | -1.3% | -3,180 | 241,944 | 06 Mar 2026 | Direct | ||
| Stephen McMillan | TDC | Common Stock | Tax liability | -6.27% | -40,319 | 602,781 | 03 Mar 2026 | Direct | ||
| Michael D. Hutchinson | TDC | Common Stock | Tax liability | -8.79% | -15,208 | 157,724 | 03 Mar 2026 | Direct | ||
| Richard J. Petley | TDC | Common Stock | Tax liability | -7.23% | -13,309 | 170,867 | 03 Mar 2026 | Direct | ||
| John Ederer | TDC | Common Stock | Award | 24.2% | 74,257 | 381,781 | 01 Mar 2026 | Direct | ||
| Stephen McMillan | TDC | Common Stock | Award | 34.2% | 206,271 | 809,052 | 01 Mar 2026 | Direct | ||
| Sumeet Arora | TDC | Common Stock | Award | 27.7% | 66,007 | 304,097 | 01 Mar 2026 | Direct | ||
| Scot Frazier Rogers | TDC | Common Stock | Award | 28.8% | 53,630 | 240,150 | 01 Mar 2026 | Direct | ||
| Michael D. Hutchinson | TDC | Common Stock | Award | 41.8% | 66,007 | 223,731 | 01 Mar 2026 | Direct | ||
| Richard J. Petley | TDC | Common Stock | Award | 43.5% | 74,257 | 245,124 | 01 Mar 2026 | Direct | ||
| Melissa B. Fisher | TDC | Common Stock | Award | 3,850 | 3,850 | 01 Mar 2026 | Direct | |||
| Richard J. Petley | TDC | Common Stock | Tax liability | -1.55% | -2,899 | 184,176 | 27 Feb 2026 | Direct | ||
| Stephen McMillan | TDC | Common Stock | Tax liability | -3.03% | -20,090 | 643,100 | 27 Feb 2026 | Direct | ||
| Michael D. Hutchinson | TDC | Common Stock | Tax liability | -2.84% | -5,052 | 172,932 | 27 Feb 2026 | Direct | ||
| Stephen McMillan | TDC | Common Stock | Sale | -7.01% | $1,513,125 | $30.26 | -50,000 | 663,190 | 26 Feb 2026 | Direct |
| Michael P. Gianoni | TDC | Common Stock | Sale | -44.2% | $749,125 | $29.96 | -25,000 | 31,523 | 24 Feb 2026 | Direct |
| Lynrock Lake LP | TDC | Common Stock, par value $0.01 per share | Sale | -0.66% | $2,497,507 | $40.29 | -61,990 | 9,354,676 | 11 Feb 2026 | By Fund |
| John Ederer | TDC | Common Stock | Tax liability | -2.04% | -6,418 | 307,524 | 11 Feb 2026 | Direct | ||
| John Ederer | TDC | Common Stock | Award | 17.5% | 46,747 | 313,942 | 11 Feb 2026 | Direct | ||
| Sumeet Arora | TDC | Common Stock | Tax liability | -2.79% | -6,831 | 238,090 | 11 Feb 2026 | Direct | ||
| Sumeet Arora | TDC | Common Stock | Award | 17.4% | 36,359 | 244,921 | 11 Feb 2026 | Direct | ||
| Stephen McMillan | TDC | Common Stock | Tax liability | -12.9% | -92,467 | 626,406 | 11 Feb 2026 | Direct | ||
| Stephen McMillan | TDC | Common Stock | Award | 50.8% | 246,532 | 731,536 | 11 Feb 2026 | Direct | ||
| Scot Frazier Rogers | TDC | Common Stock | Tax liability | -2.52% | -4,813 | 186,520 | 11 Feb 2026 | Direct | ||
| Scot Frazier Rogers | TDC | Common Stock | Award | 19.9% | 31,711 | 191,333 | 11 Feb 2026 | Direct | ||
| Richard J. Petley | TDC | Common Stock | Tax liability | -9.68% | -16,645 | 155,285 | 11 Feb 2026 | Direct | ||
| Richard J. Petley | TDC | Common Stock | Award | 45% | 59,905 | 193,131 | 11 Feb 2026 | Direct | ||
| Michael D. Hutchinson | TDC | Common Stock | Tax liability | -11.7% | -19,511 | 147,058 | 11 Feb 2026 | Direct |
* marks a reported price that did not pass the local price check.