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Bradley Sitko

CIK 1959809 · Chief Investment Officer · last filed 2026-07-14

Bradley Sitko is a Chief Investment Officer who has filed 17 SEC Form 4 insider transactions across 2 companies since 2023. The most recent filing, for XOMA, was dated Jul 14, 2026. Across all open-market trades the lifetime net is +$417.8K, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $45.3K across reported positions.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$45.3K

Companies

2

Total Filings

17

Lifetime Open-Market Net

$417.8K

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
XOMA Chief Investment Officer 0 $40.17 $0 $0 1 2026-07-14
XOMAP Chief Investment Officer 1,813 $24.98 $45.3K $417.8K 16 2026-04-22

Recent Filings

17 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2026-07-14 XOMA Mixed −96,067 $0 EDGAR
2026-04-22 XOMAP Exer (M) +3,737 $0 EDGAR
2026-03-13 XOMAP Grant (A) +59,402 $0 EDGAR
2025-09-23 XOMAP Exer (M) +6,712 $0 EDGAR
2025-07-02 XOMAP Buy (P) +2,000 $50.8K EDGAR
2025-04-09 XOMAP Buy (P) +2,000 $49.4K EDGAR
2025-04-02 XOMAP Buy (P) +1,245 $26.2K EDGAR
2025-03-25 XOMAP Buy (P) +4,134 $98.8K EDGAR
2025-01-10 XOMAP Buy (P) +545 $14.0K EDGAR
2025-01-03 XOMAP Buy (P) +300 $7.8K EDGAR
Showing 1–10 of 17
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Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.