Canfield Thomas C 4

4 · Iridium Communications Inc. · Filed Apr 2, 2026

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Updated Apr 2, 2026

Iridium (IRDM) Director Thomas C. Canfield Receives Award

What Happened

Thomas C. Canfield, a director of Iridium Communications, was granted 1,257.4 shares (transaction code A — award/grant) on March 31, 2026. The shares were reported at $0.00 per share (total reported value $0) because they represent dividend-equivalent rights tied to existing restricted stock units (RSUs), not a cash purchase.

Key Details

Transaction date: 2026-03-31; Price: $0.00; Shares: 1,257.4 (dividend-equivalent rights).
Filing date: 2026-04-02 — filed within the standard two-business-day Form 4 window (timely).
Shares owned after transaction: not specified in the provided excerpt of the filing.
Footnotes: (F1) These are dividend-equivalent rights from the issuer’s $0.15/share quarterly dividend (declared Mar 5, 2026) and will convert to shares upon settlement of the original RSUs, subject to the same vesting/terms; grant approved under Rule 16b-3. (F2) The reported shares are held by a grantor retained annuity trust (GRAT) for which the reporting person is trustee and sole annuitant.

Context

This was not a market purchase or sale but an accrual of dividend-equivalent rights tied to existing RSUs. Such dividend-equivalent grants are routine corporate actions and do not, by themselves, indicate a change in the insider’s bullish or bearish view.

Form 4

Period: 2026-03-31

Director

Transactions

Holdings

Footnotes (2)

[F1]On March 5, 2026, the Issuer's board of directors declared a quarterly cash dividend in the amount of $0.15 per share of its common stock, payable on March 31, 2026 to stockholders of record of the common stock at the close of business on March 16, 2026 (the "Dividend"). The amount acquired in column 4 represents equivalent rights accrued as a result of the Dividend on restricted stock units with respect to the Issuer's common stock ("Original RSUs") held by the reporting person. Each dividend equivalent right entitles the reporting person to receive one share of the Issuer's common stock upon the settlement of the Original RSUs and is subject to the same terms and conditions, including vesting and settlement, as the Original RSUs to which it relates. The grant of dividend equivalent rights was approved by the Issuer's board of directors pursuant to Rule 16b-3 of the Securities Exchange Act of 1934, as amended.
[F2]These shares are owned by a grantor retained annuity trust ("GRAT"). The reporting person is the trustee and sole annuitant of the GRAT.

Signature

/s/ Peter L. Trentman, Attorney-in-Fact|2026-04-02

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