13D Filing: First Pacific Advisors LLC and Esterline Technologies Corp (ESL)

(a) and (b) Items 7 through 11 and 13 of each of the cover pages of this Schedule 13D are incorporated
herein by reference.

Set forth below is the aggregate number of shares of Common Stock directly held, as of the date hereof, by each of the following FPA
investment advisory clients.

As the investment adviser of FPA Crescent Fund, the Managed Accounts and the Private Investment Funds (collectively, the
FPA Clients), FPA may be deemed to share voting and/or investment power over the securities of the Issuer held by the FPA Clients and therefore may be deemed to beneficially own such securities.

(c) Except as disclosed in Exhibit 99.1 or previous amendments to Schedule 13D, there have been no transactions in securities of the Issuer during the 60 days
prior to the date hereof by any of the Reporting Persons. Exhibit 99.1 is incorporated herein by reference.

(d) The disclosure regarding the relationship
between the Reporting Persons in Item 2(c) of this Schedule 13D is incorporated by reference herein. The limited partners of (or investors in) each of the FPA Clients for which FPA acts as general partner, managing member and/or investment
adviser have the right to participate in the receipt of dividends from, or proceeds from the sale of, the shares of Common Stock held for the accounts of their respective funds in accordance with their respective limited partnership interests (or
investment percentages) in their respective funds.

Item 6 of Schedule 13D is supplemented and superseded, as the case may be, as follows:

The disclosure regarding the Request contained in Item 4 is incorporated herein by reference.

On June 8, 2017, FPA Hawkeye-7 sold to an unaffiliated third party American-style call options referencing an aggregate of 3,400 shares of Common Stock
of the Issuer with a strike price of $95 per share that were immediately exercisable and expire on August 18, 2017. FPA Hawkeye-7 received a premium of $8.00 for each option to purchase one share of Common Stock. In addition, on June 8,
2017, FPA Hawkeye sold to an unaffiliated third party American-style call options referencing an aggregate of 2,100 shares of Common Stock of the Issuer with a strike price of $95 per share that were immediately exercisable and expire on
August 18, 2017. FPA Hawkeye received a premium of $8.00 for each option to purchase one share of Common Stock.