Mark R. Ciarfella

Mark R. Ciarfella: EVP - OPERATIONS at SBA Communications. What Mark R. Ciarfella holds in an AI or semiconductor company tracked on Silicon Floor, from their SEC filings, broken down: the shares held and how, then any restricted shares, options or other rights declared.

SBA Communications (SBAC)

Mark R. Ciarfella holds 42,821 SBA Communications shares (0.04% of the company), worth about $7.8M at the last price, according to the Form 4 of Mar 6, 2026.

• Shares held: 42,821 (0.04%), $7.8M — Held in their own name: 42,821 Class A.
• Share units: 12,477 (0.01%), $2.3M — SBA Communications promised them as pay: each unit becomes a share when it vests, if its conditions are met. No vote until then.

Declarations

• SBA Communications (SBAC) — Form 4 of Mar 6, 2026 (EVP - OPERATIONS): option exercise or conversion of 715; shares withheld for tax of 265 at $195.69; 42,821 shares after 0001504654-26-000002
• SBA Communications (SBAC) — Form 4 of Dec 5, 2025 (EVP - OPERATIONS): option exercise or conversion of 215; shares withheld for tax of 215 at $190.00; 37,609 shares after 0001504654-25-000004
• SBA Communications (SBAC) — Form 4 of Mar 6, 2025 (EVP - OPERATIONS): option exercise or conversion of 715; shares withheld for tax of 265 at $220.38; 37,609 shares after 0001415889-25-007586
• SBA Communications (SBAC) — Form 4 of Mar 4, 2025 (EVP - OPERATIONS): option exercise or conversion of 611; shares withheld for tax of 226 at $221.51; 36,194 shares after 0001415889-25-007301
• SBA Communications (SBAC) — Form 4 of Dec 19, 2024 (EVP - OPERATIONS): option exercise or conversion of 179; shares withheld for tax of 179 at $221.58; 33,588 shares after 0001415889-24-030107
• SBA Communications (SBAC) — Form 4 of Dec 9, 2024 (EVP - OPERATIONS): option exercise or conversion of 3,545 at $182.30; open-market sale of 3,545 at $224.33; 33,588 shares after 0001415889-24-029013

Sources: SEC Schedules 13D and 13G (stakes above 5%, which count everything a person votes or can acquire within 60 days) and Forms 3, 4 and 5 (the shares a director, officer or 10% owner holds, filed within two business days of each trade). Values at the last price.

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