Gregory Serio

CIK 1551214 · View on SEC EDGAR ↗

Insider

First SEC filing: June 1, 2012 · Latest: May 19, 2026

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Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 31 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

31 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
Feb. 28, 2025 RDN S 4,100 $32.65 $133,865 344 Direct -92.26% Disposed 13.0% (price as of 2026-08-19)
May 23, 2024 RDN S 9,663 $31.04 $299,940 4,444 Direct -68.50% Disposed 18.8% (price as of 2026-08-19)
Aug. 17, 2023 RDN S 3,800 $26.82 $101,916 8,221 Direct -31.61% Disposed 37.5% (price as of 2026-08-19)
May 19, 2023 RDN S 11,000 $25.72 $282,920 12,021 Direct -47.78% Disposed 43.4% (price as of 2026-08-19)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Derivative holdings (Form 4 Table II)

Options, RSUs and convertible securities reported on Form 4 Table II.

Date Ticker Security Underlying Exercise price Expiration Shares A/D
May 15, 2026 RDN Restricted Stock Units - Time-based Award Common Stock (4,837) — — 4,837 Disposed
May 21, 2025 RDN Restricted Stock Units - Time-based Award Common Stock (4,837) — — 4,837 Acquired
May 15, 2025 RDN Restricted Stock Units - Time-based Award Common Stock (5,109) — — 5,109 Disposed
May 22, 2024 RDN Restricted Stock Units - Time-based Award Common Stock (5,109) — — 5,109 Acquired
May 15, 2024 RDN Restricted Stock Units - Time-based Award Common Stock (5,899) — — 5,899 Disposed
May 17, 2023 RDN Restricted Stock Units - Time-based Award Common Stock (5,899) — — 5,899 Acquired
May 15, 2023 RDN Restricted Stock Units - Time-based Award Common Stock (7,083) — — 7,083 Disposed
May 15, 2022 RDN Restricted Stock Units - Time-based Award Common Stock (5,986) — — 5,986 Disposed
May 11, 2022 RDN Restricted Stock Units - Time-based Award Common Stock (7,083) — — 7,083 Acquired
May 13, 2021 RDN Restricted Stock Units - Time-based Award Common Stock — — 9,962 Disposed
May 12, 2021 RDN Restricted Stock Units - Time-based Award Common Stock (5,986) — — 5,986 Acquired
May 13, 2020 RDN Restricted Stock Units [F1] Common Stock $0.00 — 9,962 Acquired
May 15, 2019 RDN Restricted Stock Units [F1] Common Stock $0.00 — 5,768 Acquired
May 9, 2018 RDN Restricted Stock Units [F1] Common Stock $0.00 — 7,833 Acquired
May 10, 2017 RDN Restricted Stock Units (stock settled) [F1] Common Stock $0.00 — 6,924 Acquired
May 11, 2016 RDN Restricted Stock Units (stock settled) [F1] Common Stock $0.00 — 9,458 Acquired
May 13, 2015 RDN Restricted Stock Units (stock settled) [F1] Common Stock $0.00 — 6,333 Acquired
May 14, 2014 RDN Restricted Stock Units (stock settled) [F1] Common Stock $0.00 — 7,824 Acquired
May 14, 2013 RDN Restricted Stock Units (stock settled) [F1] Common Stock $0.00 — 8,221 Acquired
May 30, 2012 RDN Restricted Stock Units [F1] Common Stock $0.00 — 46,371 Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 1 holding

Securities held when first becoming an insider, per SEC Form 3.

Date Ticker Security Shares Ownership
June 1, 2012 RDN Restricted Stock Unit [F1]→ Common Stock — Direct