STOCK TITAN

TransDigm (NYSE: TDG) COO exercises options, sells 3,900 shares in open‑market trades

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

TransDigm Group Co‑Chief Operating Officer Joel Reiss exercised stock options to acquire 3,900 shares of common stock at a strike price of $284.97 per share, then sold 3,900 shares in multiple open‑market trades on June 15, 2026 at prices between $1,268.61 and $1,288.04.

Following these transactions, he holds 7,500 common shares directly. The sales represent a little over half of his reported direct holdings, and the filing does not show any related tax‑withholding or gift transactions.

Positive

  • None.

Negative

  • None.
Insider Reiss Joel
Role Co-Chief Operating Officer
Sold 3,900 shs ($4.98M)
Type Security Shares Price Value
Exercise Stock Option 3,900 $0.00 --
Exercise Common Stock 3,900 $284.97 $1.11M
Sale Common Stock 32 $1,268.8672 $41K
Sale Common Stock 58 $1,270.0216 $74K
Sale Common Stock 146 $1,271.2884 $186K
Sale Common Stock 174 $1,272.381 $221K
Sale Common Stock 300 $1,273.3296 $382K
Sale Common Stock 600 $1,274.3513 $765K
Sale Common Stock 502 $1,275.3522 $640K
Sale Common Stock 428 $1,276.4231 $546K
Sale Common Stock 494 $1,277.4302 $631K
Sale Common Stock 316 $1,278.5335 $404K
Sale Common Stock 158 $1,279.5528 $202K
Sale Common Stock 152 $1,280.4969 $195K
Sale Common Stock 150 $1,281.8413 $192K
Sale Common Stock 90 $1,282.6004 $115K
Sale Common Stock 136 $1,283.7266 $175K
Sale Common Stock 74 $1,285.0378 $95K
Sale Common Stock 60 $1,285.9033 $77K
Sale Common Stock 30 $1,287.5867 $39K
Holdings After Transaction: Stock Option — 15,800 shares (Direct, null); Common Stock — 7,500 shares (Direct, null)
Footnotes (1)
  1. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,268.6100 - $1,269.3500. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,277.9900 - $1,278.8700. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,279.0400 - $1,280.0200. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,280.0900 - $1,280.9800. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,281.2600 - $1,282.1700. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,282.3000 - $1,283.2400. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,283.4400 - $1,284.2000. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,284.4700 - $1,285.2000. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,285.7500 - $1,285.9400. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,287.3600 - $1,288.0400. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,269.6350 - $1,270.4900. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,270.7400 - $1,271.7100. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,271.7400 - $1,272.6100. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,272.9100 - $1,273.8900. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,273.9200 - $1,274.8900. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,274.9400 - $1,275.9350. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,275.9400 - $1,276.8500. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,276.9800 - $1,277.9700. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price.
Shares sold 3,900 shares Total TransDigm common shares sold on June 15, 2026
Shares exercised 3,900 shares Common shares acquired via stock option exercise on June 15, 2026
Exercise price $284.97/share Strike price of stock options exercised for 3,900 shares
Post-transaction holdings 7,500 shares Direct TransDigm common shares held by Joel Reiss after transactions
Lowest sale price range $1,268.61 Lower end of reported sale price range in weighted average footnotes
Highest sale price range $1,288.04 Upper end of reported sale price range in weighted average footnotes
Sale transactions 18 entries Number of separate open‑market sale line items in Form 4
open-market sale financial
"transaction_action": "open-market sale""
An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.
derivative exercise/conversion financial
"transaction_action": "derivative exercise/conversion""
stock option financial
"security_title": "Stock Option""
A stock option is a contract that gives you the right to buy or sell a company's stock at a specific price within a certain time frame. People use them to potentially make money if the stock's price moves favorably or to protect against losses. It's like holding a coupon that can be used to buy or sell stock at a set price later on.
weighted price financial
"Price reported constitutes the average weighted price of shares sold."
derivative security financial
"Exercise or conversion of derivative security"
A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.
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SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Reiss Joel

(Last)(First)(Middle)
1350 EUCLID AVE
SUITE 1600

(Street)
CLEVELAND OHIO 44115

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
TransDigm Group INC [ TDG ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
Co-Chief Operating Officer
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
06/15/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock06/15/2026M3,900A$284.977,500D
Common Stock06/15/2026S32D$1,268.8672(1)7,468D
Common Stock06/15/2026S58D$1,270.0216(2)7,410D
Common Stock06/15/2026S146D$1,271.2884(3)7,264D
Common Stock06/15/2026S174D$1,272.381(4)7,090D
Common Stock06/15/2026S300D$1,273.3296(5)6,790D
Common Stock06/15/2026S600D$1,274.3513(6)6,190D
Common Stock06/15/2026S502D$1,275.3522(7)5,688D
Common Stock06/15/2026S428D$1,276.4231(8)5,260D
Common Stock06/15/2026S494D$1,277.4302(9)4,766D
Common Stock06/15/2026S316D$1,278.5335(10)4,450D
Common Stock06/15/2026S158D$1,279.5528(11)4,292D
Common Stock06/15/2026S152D$1,280.4969(12)4,140D
Common Stock06/15/2026S150D$1,281.8413(13)3,990D
Common Stock06/15/2026S90D$1,282.6004(14)3,900D
Common Stock06/15/2026S136D$1,283.7266(15)3,764D
Common Stock06/15/2026S74D$1,285.0378(16)3,690D
Common Stock06/15/2026S60D$1,285.9033(17)3,630D
Common Stock06/15/2026S30D$1,287.5867(18)3,600D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Option$284.9706/15/2026M3,90009/30/202111/08/2027Common Stock3,900$0.0015,800D
Explanation of Responses:
1. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,268.6100 - $1,269.3500. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price.
2. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,269.6350 - $1,270.4900. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price.
3. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,270.7400 - $1,271.7100. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price.
4. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,271.7400 - $1,272.6100. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price.
5. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,272.9100 - $1,273.8900. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price.
6. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,273.9200 - $1,274.8900. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price.
7. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,274.9400 - $1,275.9350. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price.
8. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,275.9400 - $1,276.8500. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price.
9. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,276.9800 - $1,277.9700. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price.
10. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,277.9900 - $1,278.8700. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price.
11. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,279.0400 - $1,280.0200. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price.
12. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,280.0900 - $1,280.9800. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price.
13. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,281.2600 - $1,282.1700. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price.
14. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,282.3000 - $1,283.2400. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price.
15. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,283.4400 - $1,284.2000. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price.
16. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,284.4700 - $1,285.2000. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price.
17. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,285.7500 - $1,285.9400. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price.
18. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,287.3600 - $1,288.0400. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price.
Remarks:
/s/ Rachel L. Quinlan as attorney in fact for Joel Reiss06/16/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transactions did TransDigm (TDG) report for Joel Reiss?

TransDigm reported that Co‑Chief Operating Officer Joel Reiss exercised options for 3,900 common shares, then sold 3,900 shares in multiple open‑market transactions on June 15, 2026, at prices between $1,268.61 and $1,288.04.

How many TransDigm (TDG) shares does Joel Reiss hold after this Form 4?

After the reported transactions, Joel Reiss holds 7,500 TransDigm common shares directly. This reflects his position after exercising options on 3,900 shares and selling 3,900 shares in several open‑market trades on June 15, 2026.

What was the stock option exercise price reported for TransDigm (TDG) on this Form 4?

The Form 4 shows a stock option exercise price of $284.97 per share for 3,900 underlying TransDigm common shares. These options were exercised on June 15, 2026, converting the derivative position into common stock before the reported sales.

Were the TransDigm (TDG) insider sales by Joel Reiss open‑market transactions?

Yes. Each sale is coded with transaction code “S” and described as an open‑market or private transaction. The filing lists multiple tranches of TransDigm common stock sold at weighted average prices between about $1,268 and $1,288 per share.

Did Joel Reiss engage in any tax‑withholding or gift transactions in this TransDigm (TDG) filing?

No. The transaction summary shows exercise and sale activity only: 3,900 shares exercised and 3,900 shares sold. There are no entries for tax‑withholding dispositions, gifts, or restructuring transactions in this particular Form 4.

How many TransDigm (TDG) shares did Joel Reiss sell on June 15, 2026?

The transaction summary shows total sales of 3,900 TransDigm common shares on June 15, 2026. These were executed in 18 separate open‑market transactions, each with its own share amount and weighted average sale price disclosed in the filing.