Scott Scheimreif

CIK: 0001564963

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)0 (0.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)6 (28.6%)

Compensation grants

Other (G, F, J, C, D, …)15 (71.4%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

IRDM

Iridium Communications Inc.

Officer

Discretionary Trading P&L

Holdings

Transaction History (21 total)

IRDM
Iridium Communications Inc.
Sep 1, 2026
Tax Payment(F)
Direct
2.2K shares at avg. $46.98$104K
IRDM
Iridium Communications Inc.
Jun 1, 2026
Tax Payment(F)
Direct
2.2K shares at avg. $51.78$114K
IRDM
Iridium Communications Inc.
Mar 9, 2026
Tax Payment(F)
Direct
2.4K shares at avg. $24.01$58K
IRDM
Iridium Communications Inc.
Mar 1, 2026
Award(A)
Direct
66.8K shares-
IRDM
Iridium Communications Inc.
Mar 1, 2026
Tax Payment(F)
Direct
12.6K shares at avg. $22.49$283K
IRDM
Iridium Communications Inc.
Feb 26, 2026
Award(A)
Direct
5K shares-
IRDM
Iridium Communications Inc.
Feb 26, 2026
Award(A)
Direct
20.5K shares-
IRDM
Iridium Communications Inc.
Dec 19, 2025
Tax Payment(F)
Direct
1K shares at avg. $17.04$18K
IRDM
Iridium Communications Inc.
Dec 1, 2025
Tax Payment(F)
Direct
1.8K shares at avg. $16.44$29K
IRDM
Iridium Communications Inc.
Sep 1, 2025
Tax Payment(F)
Direct
1.8K shares at avg. $24.89$44K
IRDM
Iridium Communications Inc.
Jun 1, 2025
Tax Payment(F)
Direct
1.8K shares at avg. $25.40$45K
IRDM
Iridium Communications Inc.
Mar 2, 2025
Tax Payment(F)
Direct
2.4K shares at avg. $31.56$76K
IRDM
Iridium Communications Inc.
Mar 2, 2025
Award(A)
Direct
5K shares-
IRDM
Iridium Communications Inc.
Mar 1, 2025
Award(A)
Direct
23.8K shares-
IRDM
Iridium Communications Inc.
Mar 1, 2025
Tax Payment(F)
Direct
2.3K shares at avg. $31.56$73K
IRDM
Iridium Communications Inc.
Mar 1, 2025
Award(A)
Direct
10.1K shares-
IRDM
Iridium Communications Inc.
Mar 1, 2025
Tax Payment(F)
Direct
5.6K shares at avg. $31.56$177K
IRDM
Iridium Communications Inc.
Mar 1, 2025
Tax Payment(F)
Direct
4.4K shares at avg. $31.56$140K
IRDM
Iridium Communications Inc.
Dec 19, 2024
Tax Payment(F)
Direct
1.9K shares at avg. $29.50$57K
IRDM
Iridium Communications Inc.
Dec 1, 2024
Tax Payment(F)
Direct
1.2K shares at avg. $29.72$34K
IRDM
Iridium Communications Inc.
Sep 1, 2024
Tax Payment(F)
Direct
1.2K shares at avg. $25.80$30K

		Type	Shares	Price		Ownership
Sep 1, 2026	IRDM Iridium Communications Inc.	Tax Payment(F)	2,207	$46.98	$103,685	Direct
Jun 1, 2026	IRDM Iridium Communications Inc.	Tax Payment(F)	2,205	$51.78	$114,175	Direct
Mar 9, 2026	IRDM Iridium Communications Inc.	Tax Payment(F)	2,397	$24.01	$57,552	Direct
Mar 1, 2026	IRDM Iridium Communications Inc.	Award(A)	66,805	-	$0	Direct
Mar 1, 2026	IRDM Iridium Communications Inc.	Tax Payment(F)	12,592	$22.49	$283,194	Direct
Feb 26, 2026	IRDM Iridium Communications Inc.	Award(A)	4,963	-	$0	Direct
Feb 26, 2026	IRDM Iridium Communications Inc.	Award(A)	20,548	-	$0	Direct
Dec 19, 2025	IRDM Iridium Communications Inc.	Tax Payment(F)	1,032	$17.04	$17,585	Direct
Dec 1, 2025	IRDM Iridium Communications Inc.	Tax Payment(F)	1,766	$16.44	$29,033	Direct
Sep 1, 2025	IRDM Iridium Communications Inc.	Tax Payment(F)	1,766	$24.89	$43,956	Direct
Jun 1, 2025	IRDM Iridium Communications Inc.	Tax Payment(F)	1,765	$25.40	$44,831	Direct
Mar 2, 2025	IRDM Iridium Communications Inc.	Tax Payment(F)	2,401	$31.56	$75,776	Direct
Mar 2, 2025	IRDM Iridium Communications Inc.	Award(A)	4,973	-	-	Direct
Mar 1, 2025	IRDM Iridium Communications Inc.	Award(A)	23,764	-	-	Direct
Mar 1, 2025	IRDM Iridium Communications Inc.	Tax Payment(F)	2,304	$31.56	$72,714	Direct
Mar 1, 2025	IRDM Iridium Communications Inc.	Award(A)	10,071	-	-	Direct
Mar 1, 2025	IRDM Iridium Communications Inc.	Tax Payment(F)	5,617	$31.56	$177,273	Direct
Mar 1, 2025	IRDM Iridium Communications Inc.	Tax Payment(F)	4,436	$31.56	$140,000	Direct
Dec 19, 2024	IRDM Iridium Communications Inc.	Tax Payment(F)	1,920	$29.50	$56,640	Direct
Dec 1, 2024	IRDM Iridium Communications Inc.	Tax Payment(F)	1,151	$29.72	$34,208	Direct
Sep 1, 2024	IRDM Iridium Communications Inc.	Tax Payment(F)	1,151	$25.80	$29,696	Direct

1-21 of 21 transactions

About Scheimreif Scott

Scheimreif Scott (SEC CIK 0001564963) files insider reports with the SEC as EVP-Government Programs of Iridium Communications Inc. (IRDM).

Signal8 holds 12 ownership filings by Scheimreif Scott, all Form 4s, filed between Sep 4, 2024 and Sep 2, 2026. Those filings report 21 transactions, from Sep 1, 2024 to Sep 1, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Scheimreif Scott's filings is in MCLEAN, VA.

Recent filings by Scheimreif Scott

Sep 1, 2026: Tax withholding of IRDM shares (Form 4, code F).
Jun 1, 2026: Tax withholding of IRDM shares (Form 4, code F).
Mar 9, 2026: Tax withholding of IRDM shares (Form 4, code F).
Mar 1, 2026: Grant or award of IRDM shares (Form 4, code A).
Mar 1, 2026: Tax withholding of IRDM shares (Form 4, code F).

Other insiders filing for Iridium Communications Inc. (IRDM)

DESCH MATTHEW J, Chief Executive Officer
FRAZIER LEON ANTHONY, Director
YEANEY JACQUELINE E, Director
Sears Kay, Director
Alterman Louis M, Director
Shivanandan Monique S., Director

How to read Form 4 transaction codes