Esterline Technologies Corp (ESL): First Pacific Advisors LLC Ups Its Stake

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(d) and (e) During the past five years, none of the Reporting Persons (nor any of the persons listed on
Appendix A) has been (i) convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors) or (ii) a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such
proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.

(f) The citizenship with respect to a natural person or state of organization with respect to an entity, as applicable, of the Reporting Persons is as
follows:

1. FPA Delaware
2. FPA Crescent Fund Delaware
3. FPA Global Opportunity Delaware
4. FPA Select Drawdown Delaware
5. FPA Select Delaware
6. FPA Value Partners Delaware
7. FPA Hawkeye Delaware
8. FPA Hawkeye-7 Delaware
9. J. Richard Atwood United States
10. Steven T. Romick United States
11. Brian A. Selmo United States
12. Mark Landecker Canada

The persons listed on Appendix A are all United States citizens.

ITEM 3. SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION

The aggregate purchase price (inclusive of
commissions) of the securities of the Issuer reported herein was $304,002,621.26. The securities of the Issuer reported herein were purchased with the working capital of investment advisory clients of FPA, including the working capital of FPA
Crescent Fund, FPA Global Opportunity, FPA Select Drawdown, FPA Select, FPA Value Partners, FPA Hawkeye, FPA Hawkeye-7, and the Managed Accounts.

ITEM 4. PURPOSE OF TRANSACTION

The Reporting Persons acquired the securities of the Issuer reported herein for
investment purposes in the belief that the securities of the Issuer were undervalued and represented an attractive investment opportunity.

Going forward,
the Reporting Persons may have conversations with members of the Issuers management team and members of the Issuers Board of Directors (the Board) regarding multiple topics, including, but not limited to, corporate governance
and the composition of the Board, general business operations and strategic alternatives to promote long-term value for the benefit of all shareholders. The Reporting Persons may engage in communications with one or more officers, members of the
Board, representatives, shareholders of the Issuer and other relevant parties regarding the Issuers business and certain initiatives, which could include one or more of the items in subsections (a) through (j) of Item 4 of Schedule 13D. The
Reporting Persons may, at any time and from time to time, review or reconsider their position and/or change their purpose and/or formulate plans or proposals with respect thereto.

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