Comparable stake leader
Capital International Investors
SEC ownership of TransDigm Group INC
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001260221.
Disclosed value leader
Capital International Investors
Comparable rows
50/50
Latest evidence
18 Sep 2026
- Public ticker
- TDG 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
-
Capital International Investors
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
Capital International Investors
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
18 Sep 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001260221
- Issuer location
- Cleveland, OH
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 TransDigm Group 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
Capital International Inv...
Disclosed value leader
Capital International Inv...
Comparable rows
50/50
Latest evidence
18 Sep 2026
13F
13D/G
3/4/5
Lead comparable stake: 9.9%
13D/G row: Capital International Investors
Showing 1-8 of 50 holder rows.
Quick read
Capital International Investors leads the comparable SEC ownership view at 9.9%.
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 Capital International Investors's linked filing trail.
Comparable ownership
Top 5
Capital International Investors
9.9%
Capital World Investors
8.3%
VANGUARD CAPITAL MANAGEMENT LLC
7.5%
Capital Research Global Investors
5.6%
Robert J. Small
0.88%
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 |
|---|---|---|---|---|---|
| Capital International Investors |
13F
13D/G
Company
|
9.9%
from 13D/G
|
$6,743,529,491
5,062,682 shares
|
— | 30 Jun 2026 |
| Capital World Investors |
13F
13D/G
Company
|
8.3%
from 13D/G
|
$5,693,274,985
4,274,109 shares
|
— | 30 Jun 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
13F
Vanguard Capital Management · Company
|
7.5%
|
$4,896,399,077
4,224,820 shares
|
$0 | 31 Mar 2026 |
| Capital Research Global Investors |
13F
13D/G
Company
|
5.6%
from 13D/G
|
$4,155,104,974
3,119,490 shares
|
— | 30 Jun 2026 |
| Robert J. Small |
3/4/5
Director
|
0.88%
|
$666,291,734
500,204 shares
|
-$127,550,335 | 18 Sep 2026 |
| Irina Igorevna Krasik |
3/4/5
Director
|
0%
|
$17,316
13 shares
|
— | 18 Sep 2026 |
| BlackRock, Inc. |
13F
Company
|
8.6%
|
$6,489,038,774
4,871,505 shares
|
— | 30 Jun 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13F
Company
|
4.6%
|
$3,437,987,248
2,580,994 shares
|
— | 30 Jun 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: -$452,856,206.
Buys
$3,838,007
Insiders: 2
Sells
$456,694,213
Insiders: 5
Net
-$452,856,206
Shares: -340,248
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 2,905
Shares: 343,153
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 31,964 | $0 | $38,696,634 | -$38,696,634 |
| 3-6 | 0 | 31,964 | $0 | $39,255,821 | -$39,255,821 |
| 6-9 | 951 | 130,580 | $1,221,333 | $179,909,056 | -$178,687,723 |
| 9-12 | 1,954 | 148,645 | $2,616,674 | $198,832,702 | -$196,216,028 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 23 reporting-owner rows connected to TransDigm Group INC. Open a relationship link for the CIK-to-CIK filing trail.
Rows
23
Largest Forms 3/4/5 holder
Robert J. Small
Net 12M change
-$452,856,206
Latest report
18 Sep 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Robert J. Small | Director | $666,291,734 | -$127,550,335 | -16% | Median | 18 Sep 2026 |
| Raymond F. Laubenthal | Director | $161,022,285 | Mixed | 28 Mar 2022 | ||
| Sean P. Hennessy | Director | $45,071,025 | Median | 18 Sep 2026 | ||
| David Barr | Director | $42,924,989 | Median | 18 Sep 2026 | ||
| W. Nicholas Howley | Director | $40,025,820 | -$82,422,054 | -67% | Median | 18 Sep 2026 |
| Michael Graff | Director | $18,399,467 | Median | 18 Sep 2026 | ||
| Kevin M. Stein | Director | $11,751,435 | -$186,468,287 | -94% | Filing P/S | 02 Feb 2026 |
| Michael Lisman | President & CEO, Director | $6,858,262 | +$3,836,722 | +127% | Mixed | 06 Feb 2026 |
| Peter Palmer | Director | $5,413,410 | Median | 18 Sep 2026 | ||
| Joel Reiss | Co-Chief Operating Officer | $4,028,381 | -$57,894,636 | -93% | Filing P/S | 15 Sep 2026 |
| Sarah Wynne | Chief Financial Officer | $2,739,563 | Mixed | 05 Feb 2026 | ||
| Mervin Dunn. | Director | $1,606,161 | Mixed | 16 Nov 2022 | ||
| Gary E. Mccullough | Director | $1,322,715 | Median | 18 Sep 2026 | ||
| Michele Santana | Director | $1,072,292 | Median | 18 Sep 2026 | ||
| Jane M. Cronin | Director | $977,211 | Median | 18 Sep 2026 | ||
| Patrick Joseph Murphy | Co-Chief Operating Officer | $873,132 | -$2,357,616 | -73% | Mixed | 24 Feb 2026 |
| Jessica L. Warren | GC, CCO, Secretary | $819,375 | Filing P/S | 13 May 2025 | ||
| John Staer | Director | $93,573 | Mixed | 10 Feb 2023 | ||
| Irina Igorevna Krasik | Director | $17,316 | Median | 18 Sep 2026 | ||
| III Jorge L. Valladares | Director | $0 | Mixed | 13 May 2025 |
Recent insider transactions for TransDigm Group 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Robert J. Small | TDG | Common Stock | Other | 0 | 5,677 | 18 Sep 2026 | Direct | |||
| Peter Palmer | TDG | Common Stock | Award | 0.84% | 34 | 4,064 | 18 Sep 2026 | Direct | ||
| W. Nicholas Howley | TDG | Common Stock | Award | 111.5% | 126 | 239 | 18 Sep 2026 | Direct | ||
| Irina Igorevna Krasik | TDG | Common Stock | Award | 13 | 13 | 18 Sep 2026 | Direct | |||
| Michele Santana | TDG | Common Stock | Award | 4.41% | 34 | 805 | 18 Sep 2026 | Direct | ||
| Gary E. Mccullough | TDG | Common Stock | Award | 4.31% | 41 | 993 | 18 Sep 2026 | Direct | ||
| Sean P. Hennessy | TDG | Common Stock | Award | 0.14% | 46 | 33,836 | 18 Sep 2026 | Direct | ||
| Michael Graff | TDG | Common Stock | Award | 2.02% | 34 | 1,717 | 18 Sep 2026 | Direct | ||
| Jane M. Cronin | TDG | Common Stock | Award | 4.86% | 34 | 734 | 18 Sep 2026 | Direct | ||
| David Barr | TDG | Common Stock | Award | 0.14% | 46 | 32,225 | 18 Sep 2026 | Direct | ||
| Joel Reiss | TDG | Common Stock | Sale | -52% | $4,268,872 | $1094.58 | -3,900 | 3,600 | 15 Sep 2026 | Direct |
| Joel Reiss | TDG | Common Stock | Options Exercise | 108.3% | 3,900 | 7,500 | 15 Sep 2026 | Direct | ||
| Joel Reiss | TDG | Stock Option | Options Exercise | -48.8% | -3,900 | 4,100 | 15 Sep 2026 | Direct | ||
| W. Nicholas Howley | TDG | Common Stock | Sale | -32% | $12,525,949 | $1236.28 | -10,132 | 21,548 | 18 Aug 2026 | W. Nicholas Howley Family Trust u/a/d 4/23/99 |
| W. Nicholas Howley | TDG | Common Stock | Options Exercise | 47% | 10,132 | 31,680 | 18 Aug 2026 | W. Nicholas Howley Family Trust u/a/d 4/23/99 | ||
| W. Nicholas Howley | TDG | Stock Option | Options Exercise | -85.6% | -10,132 | 1,700 | 18 Aug 2026 | W. Nicholas Howley Family Trust u/a/d 4/23/99 | ||
| Joel Reiss | TDG | Common Stock | Sale | -52% | $4,831,152 | $1238.76 | -3,900 | 3,600 | 17 Aug 2026 | Direct |
| Joel Reiss | TDG | Common Stock | Options Exercise | 108.3% | 3,900 | 7,500 | 17 Aug 2026 | Direct | ||
| Joel Reiss | TDG | Stock Option | Options Exercise | -32.8% | -3,900 | 8,000 | 17 Aug 2026 | Direct | ||
| W. Nicholas Howley | TDG | Common Stock | Sale | -32% | $12,321,288 | $1216.08 | -10,132 | 21,548 | 20 Jul 2026 | W. Nicholas Howley Family Trust u/a/d 4/23/99 |
| W. Nicholas Howley | TDG | Common Stock | Options Exercise | 47% | 10,132 | 31,680 | 20 Jul 2026 | W. Nicholas Howley Family Trust u/a/d 4/23/99 | ||
| W. Nicholas Howley | TDG | Stock Option | Options Exercise | -46.1% | -10,132 | 11,832 | 20 Jul 2026 | W. Nicholas Howley Family Trust u/a/d 4/23/99 | ||
| Joel Reiss | TDG | Stock Option | Options Exercise | -24.7% | -3,900 | 11,900 | 15 Jul 2026 | Direct | ||
| Joel Reiss | TDG | Common Stock | Sale | -10.3% | $509,678 | $1231.11 | -414 | 3,600 | 15 Jul 2026 | Direct |
| Joel Reiss | TDG | Common Stock | Sale | -46.5% | $4,239,695 | $1216.21 | -3,486 | 4,014 | 15 Jul 2026 | Direct |
| Joel Reiss | TDG | Common Stock | Options Exercise | 108.3% | 3,900 | 7,500 | 15 Jul 2026 | Direct | ||
| Joel Reiss | TDG | Stock Option | Options Exercise | 24.7% | 3,900 | 19,700 | 15 Jul 2026 | Direct | ||
| W. Nicholas Howley | TDG | Common Stock | Other | 0 | 21,548 | 18 Jun 2026 | W. Nicholas Howley Family Trust u/a/d 4/23/99 | |||
| Joel Reiss | TDG | Common Stock | Sale | -52% | $4,979,457 | $1276.78 | -3,900 | 3,600 | 15 Jun 2026 | Direct |
| Joel Reiss | TDG | Common Stock | Options Exercise | 108.3% | 3,900 | 7,500 | 15 Jun 2026 | Direct | ||
| Joel Reiss | TDG | Stock Option | Options Exercise | -19.8% | -3,900 | 15,800 | 15 Jun 2026 | Direct | ||
| W. Nicholas Howley | TDG | Common Stock | Sale | -32% | $11,964,054 | $1180.82 | -10,132 | 21,548 | 18 May 2026 | W. Nicholas Howley Family Trust u/a/d 4/23/99 |
| W. Nicholas Howley | TDG | Common Stock | Options Exercise | 47% | 10,132 | 31,680 | 18 May 2026 | W. Nicholas Howley Family Trust u/a/d 4/23/99 | ||
| W. Nicholas Howley | TDG | Stock Option | Options Exercise | -24% | -10,132 | 32,096 | 18 May 2026 | W. Nicholas Howley Family Trust u/a/d 4/23/99 | ||
| Joel Reiss | TDG | Common Stock | Sale | -52% | $4,500,951 | $1154.09 | -3,900 | 3,600 | 15 May 2026 | Direct |
| Joel Reiss | TDG | Common Stock | Options Exercise | 108.3% | 3,900 | 7,500 | 15 May 2026 | Direct | ||
| Joel Reiss | TDG | Stock Option | Options Exercise | -16.5% | -3,900 | 19,700 | 15 May 2026 | Direct | ||
| W. Nicholas Howley | TDG | Common Stock | Sale | -32% | $12,817,572 | $1265.06 | -10,132 | 21,548 | 20 Apr 2026 | W. Nicholas Howley Family Trust u/a/d 4/23/99 |
| W. Nicholas Howley | TDG | Common Stock | Options Exercise | 47% | 10,132 | 31,680 | 20 Apr 2026 | W. Nicholas Howley Family Trust u/a/d 4/23/99 | ||
| W. Nicholas Howley | TDG | Stock Option | Options Exercise | -100% | -10,132 | 0 | 20 Apr 2026 | W. Nicholas Howley Family Trust u/a/d 4/23/99 | ||
| Joel Reiss | TDG | Common Stock | Sale | -52% | $4,993,787 | $1280.46 | -3,900 | 3,600 | 15 Apr 2026 | Direct |
| Joel Reiss | TDG | Common Stock | Options Exercise | 108.3% | 3,900 | 7,500 | 15 Apr 2026 | Direct | ||
| Joel Reiss | TDG | Stock Option | Options Exercise | -14.2% | -3,900 | 23,600 | 15 Apr 2026 | Direct | ||
| Peter Palmer | TDG | Common Stock | Award | 0.75% | 30 | 4,030 | 20 Mar 2026 | Direct | ||
| Jane M. Cronin | TDG | Common Stock | Award | 4.48% | 30 | 700 | 20 Mar 2026 | Direct | ||
| Sean P. Hennessy | TDG | Common Stock | Award | 0.12% | 41 | 33,790 | 20 Mar 2026 | Direct | ||
| Gary E. Mccullough | TDG | Common Stock | Award | 4.04% | 37 | 952 | 20 Mar 2026 | Direct | ||
| Michele Santana | TDG | Common Stock | Award | 4.05% | 30 | 771 | 20 Mar 2026 | Direct | ||
| David Barr | TDG | Common Stock | Award | 0.13% | 41 | 32,179 | 20 Mar 2026 | Direct | ||
| Michael Graff | TDG | Common Stock | Award | 1.81% | 30 | 1,683 | 20 Mar 2026 | Direct |
* marks a reported price that did not pass the local price check.