Comparable stake leader
PZENA INVESTMENT MANAGEMENT LLC
SEC ownership of NOV Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001021860.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
20 May 2026
- Public ticker
- NOV 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
-
PZENA INVESTMENT MANAGEMENT LLC
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
PZENA INVESTMENT MANAGEMENT LLC
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
20 May 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001021860
- Issuer location
- Houston, TX
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 NOV Inc. (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
PZENA INVESTMENT MANAGEME...
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
20 May 2026
13F
13D/G
3/4/5
Lead comparable stake: 11%
13D/G row: PZENA INVESTMENT MANAGEMENT LLC
Showing 1-8 of 50 holder rows.
Quick read
PZENA INVESTMENT MANAGEMENT LLC leads the comparable SEC ownership view at 11%.
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 PZENA INVESTMENT MANAGEMENT LLC's linked filing trail.
Comparable ownership
Top 5
PZENA INVESTMENT MANAGEMENT LLC
11%
First Eagle Investment Management...
10%
VANGUARD PORTFOLIO MANAGEMENT LLC
5.2%
VANGUARD CAPITAL MANAGEMENT LLC
5.2%
DIMENSIONAL FUND ADVISORS LP
5%
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 |
|---|---|---|---|---|---|
| PZENA INVESTMENT MANAGEMENT LLC |
13F
13D/G
Company
|
11%
from 13D/G
|
$706,041,796
37,535,449 shares
|
— | 31 Mar 2026 |
| First Eagle Investment Management, LLC |
13F
13D/G
Company
|
10%
from 13D/G
|
$684,841,237
36,408,359 shares
|
— | 31 Mar 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13D/G
13F
Vanguard Portfolio Management · Company
|
5.2%
|
$356,056,333
18,929,098 shares
|
$0 | 31 Mar 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
13F
Vanguard Capital Management · Company
|
5.2%
|
$355,618,305
18,905,811 shares
|
$0 | 31 Mar 2026 |
| DIMENSIONAL FUND ADVISORS LP |
13F
13D/G
Company
|
5%
from 13D/G
|
$364,987,247
19,404,319 shares
|
— | 31 Mar 2026 |
| HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC |
13D/G
13F
Hotchkis and Wiley Capital Management, LLC · Company
|
4.1%
|
$292,872,003
14,919,613 shares
|
-$344,429,040 | 31 Mar 2026 |
| Jose A. Bayardo |
3/4/5
Chairman, President, and CEO, Director
|
0.21%
|
$15,204,374
745,678 shares
|
— | 20 Mar 2026 |
| Joseph W. Rovig |
3/4/5
President - Energy Equipment
|
0.07%
|
$5,430,116
267,841 shares
|
-$3,046,695 | 23 Feb 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: -$3,439,916.
Buys
$1,012,200
Insiders: 1
Sells
$4,452,116
Insiders: 2
Net
-$3,439,916
Shares: -151,086
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 70,000
Shares: 221,086
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 221,086 | $0 | $4,452,116 | -$4,452,116 |
| 6-9 | 70,000 | 0 | $1,012,200 | $0 | +$1,012,200 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 22 reporting-owner rows connected to NOV Inc.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
22
Largest Forms 3/4/5 holder
Clay C. Williams
Net 12M change
-$3,439,917
Latest report
20 May 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Clay C. Williams | Chairman, President and CEO, Director | $24,763,794 | Mixed | 23 Feb 2025 | ||
| Jose A. Bayardo | Chairman, President, and CEO, Director | $15,204,374 | Mixed | 20 Mar 2026 | ||
| Kirk M. Shelton | President - Completion and Production Solutions | $5,754,268 | Mixed | 25 Feb 2023 | ||
| Joseph W. Rovig | President - Energy Equipment | $5,430,116 | -$3,046,695 | -36% | Mixed | 23 Feb 2026 |
| Craig L. Weinstock | Sr. VP. & Gen. Counsel | $5,146,191 | -$1,405,422 | -21% | Mixed | 23 Feb 2026 |
| Isaac H. Joseph | President - Wellbore Technologies | $4,837,259 | Mixed | 25 Feb 2023 | ||
| Rodney C. Reed | Senior VP and CFO | $3,412,102 | Mixed | 20 Mar 2026 | ||
| David D. Harrison | Director | $2,564,875 | Mixed | 20 May 2026 | ||
| Scott B. Livingston | President, Energy Products and Services. | $2,397,359 | Mixed | 23 Feb 2026 | ||
| Christy H. Novak | VP, Corp. Controller, CAO | $2,091,218 | Mixed | 20 Mar 2026 | ||
| Marcela E. Donadio | Director | $2,010,450 | Mixed | 20 May 2026 | ||
| Ben A. Guill | Director | $1,966,080 | Mixed | 20 May 2025 | ||
| William R. Thomas | Director | $1,902,932 | Mixed | 20 May 2026 | ||
| Christian S. Kendall | Director | $1,794,586 | +$1,012,200 | +129% | Mixed | 20 May 2026 |
| Hackett James T. | Director | $1,546,843 | Mixed | 31 Dec 2022 | ||
| Greg L. Armstrong | Director | $1,333,716 | Mixed | 20 May 2025 | ||
| Robert S. Welborn | Director | $1,042,619 | Mixed | 20 May 2026 | ||
| Melody B. Meyer | Director | $950,721 | Mixed | 24 May 2022 | ||
| Eric L. Mattson | Director | $850,020 | Mixed | 20 May 2025 | ||
| Patricia B. Melcher | Director | $659,403 | Mixed | 20 May 2026 |
Recent insider transactions for NOV Inc.
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Marcela E. Donadio | NOV | Common Stock | Award | 9.71% | 9,457 | 106,882 | 20 May 2026 | Direct | ||
| Sanjay K. Chowbey | NOV | Common Stock | Award | 9,457 | 9,457 | 20 May 2026 | Direct | |||
| Patricia Martinez | NOV | Common Stock | Award | 37.1% | 9,457 | 34,956 | 20 May 2026 | Direct | ||
| Robert S. Welborn | NOV | Common Stock | Award | 20.6% | 9,457 | 55,429 | 20 May 2026 | Direct | ||
| William R. Thomas | NOV | Common Stock | Award | 10.3% | 9,457 | 101,166 | 20 May 2026 | Direct | ||
| David D. Harrison | NOV | Common Stock | Award | 7.45% | 9,457 | 136,357 | 20 May 2026 | Direct | ||
| Christian S. Kendall | NOV | Common Stock | Award | 11% | 9,457 | 95,406 | 20 May 2026 | Direct | ||
| Patricia B. Melcher | NOV | Common Stock | Award | 37.1% | 9,457 | 34,956 | 20 May 2026 | Direct | ||
| Jose A. Bayardo | NOV | Common Stock | Tax liability | -0.67% | -4,995 | 745,678 | 20 Mar 2026 | Direct | ||
| Christy H. Novak | NOV | Common Stock | Tax liability | -0.84% | -869 | 102,561 | 20 Mar 2026 | Direct | ||
| Rodney C. Reed | NOV | Common Stock | Tax liability | -2.92% | -4,995 | 165,797 | 20 Mar 2026 | Direct | ||
| Craig L. Weinstock | NOV | Common Stock | Tax liability | -1% | -2,562 | 253,757 | 23 Feb 2026 | Direct | ||
| Rodney C. Reed | NOV | Common Stock | Tax liability | -1.18% | -2,035 | 170,792 | 23 Feb 2026 | Direct | ||
| Christy H. Novak | NOV | Common Stock | Tax liability | -3.58% | -3,843 | 103,430 | 23 Feb 2026 | Direct | ||
| Jose A. Bayardo | NOV | Common Stock | Tax liability | -0.56% | -4,220 | 750,673 | 23 Feb 2026 | Direct | ||
| Joseph W. Rovig | NOV | Common Stock | Tax liability | -1.06% | -2,864 | 266,830 | 23 Feb 2026 | Direct | ||
| Scott B. Livingston | NOV | Common Stock | Tax liability | -1.05% | -1,259 | 118,213 | 23 Feb 2026 | Direct | ||
| Craig L. Weinstock | NOV | Common Stock | Sale | -21.4% | $1,405,422 | $20.08 | -70,000 | 256,319 | 23 Feb 2026 | Direct |
| Craig L. Weinstock | NOV | Common Stock | Options Exercise | 18.1% | 50,000 | 326,319 | 23 Feb 2026 | Direct | ||
| Craig L. Weinstock | NOV | Non-Qualified Stock Option (right to buy) | Options Exercise | -70.2% | -50,000 | 21,178 | 23 Feb 2026 | Direct | ||
| Joseph W. Rovig | NOV | Common Stock | Sale | -35.9% | $3,046,695 | $20.17 | -151,086 | 269,694 | 23 Feb 2026 | Direct |
| Joseph W. Rovig | NOV | Common Stock | Options Exercise | 56% | 151,086 | 420,780 | 23 Feb 2026 | Direct | ||
| Joseph W. Rovig | NOV | Non-Qualified Stock Option (right to buy) | Options Exercise | -100% | -151,086 | 0 | 23 Feb 2026 | Direct | ||
| Rodney C. Reed | NOV | Common Stock | Tax liability | -1.97% | -3,477 | 172,827 | 19 Feb 2026 | Direct | ||
| Christy H. Novak | NOV | Common Stock | Tax liability | -5.77% | -6,568 | 107,273 | 19 Feb 2026 | Direct | ||
| Joseph W. Rovig | NOV | Common Stock | Tax liability | -2.36% | -6,525 | 269,694 | 19 Feb 2026 | Direct | ||
| Scott B. Livingston | NOV | Common Stock | Tax liability | -2.6% | -3,188 | 119,472 | 19 Feb 2026 | Direct | ||
| Jose A. Bayardo | NOV | Common Stock | Tax liability | -1.26% | -9,615 | 754,893 | 19 Feb 2026 | Direct | ||
| Craig L. Weinstock | NOV | Common Stock | Tax liability | -2.07% | -5,838 | 276,319 | 19 Feb 2026 | Direct | ||
| Christy H. Novak | NOV | Common Stock | Award | 31.3% | 27,139 | 113,841 | 18 Feb 2026 | Direct | ||
| Scott B. Livingston | NOV | Common Stock | Award | 29.6% | 28,014 | 122,660 | 18 Feb 2026 | Direct | ||
| Craig L. Weinstock | NOV | Common Stock | Tax liability | -4.48% | -13,223 | 282,157 | 18 Feb 2026 | Direct | ||
| Craig L. Weinstock | NOV | Common Stock | Award | 27.3% | 63,367 | 295,380 | 18 Feb 2026 | Direct | ||
| Rodney C. Reed | NOV | Common Stock | Award | 22.5% | 32,391 | 176,304 | 18 Feb 2026 | Direct | ||
| Joseph W. Rovig | NOV | Common Stock | Tax liability | -4.75% | -13,767 | 276,219 | 18 Feb 2026 | Direct | ||
| Joseph W. Rovig | NOV | Common Stock | Award | 32.3% | 70,822 | 289,986 | 18 Feb 2026 | Direct | ||
| Jose A. Bayardo | NOV | Common Stock | Tax liability | -2.77% | -21,779 | 764,508 | 18 Feb 2026 | Direct | ||
| Jose A. Bayardo | NOV | Common Stock | Award | 31.1% | 186,661 | 786,287 | 18 Feb 2026 | Direct | ||
| Craig L. Weinstock | NOV | Common Stock | Tax liability | -1.35% | -3,182 | 232,013 | 06 Feb 2026 | Direct | ||
| Rodney C. Reed | NOV | Common Stock | Tax liability | -1.73% | -2,527 | 143,913 | 06 Feb 2026 | Direct | ||
| Christy H. Novak | NOV | Common Stock | Tax liability | -5.22% | -4,773 | 86,702 | 06 Feb 2026 | Direct | ||
| Jose A. Bayardo | NOV | Common Stock | Tax liability | -0.87% | -5,241 | 599,626 | 06 Feb 2026 | Direct | ||
| Joseph W. Rovig | NOV | Common Stock | Tax liability | -0.99% | -2,201 | 219,164 | 06 Feb 2026 | Direct | ||
| Scott B. Livingston | NOV | Common Stock | Tax liability | -1.8% | -1,738 | 94,646 | 06 Feb 2026 | Direct | ||
| Christy H. Novak | NOV | Common Stock | Disposed to Issuer | -100% | -450 | 0 | 24 Nov 2025 | by IRA Account | ||
| Christy H. Novak | NOV | Common Stock | Disposed to Issuer | -19% | -21,435 | 91,475 | 24 Nov 2025 | Direct | ||
| Craig L. Weinstock | NOV | Common Stock | Disposed to Issuer | -14.3% | -39,179 | 235,195 | 24 Nov 2025 | Direct | ||
| Joseph W. Rovig | NOV | Common Stock | Disposed to Issuer | -15.3% | -40,000 | 221,365 | 24 Nov 2025 | Direct | ||
| Christian S. Kendall | NOV | Common Stock | Purchase | 438.9% | $1,012,200 | $14.46 | 70,000 | 85,949 | 21 Nov 2025 | Direct |
* marks a reported price that did not pass the local price check.