Steven Keith Burke

CIK 1619834 · SVP, Chief Medical Officer · last filed 2026-02-04

"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

$936.9K

Companies

2

Total Filings

43

Lifetime Open-Market Net

-$341.6K

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
AKBA SVP, Chief Medical Officer 969,133 $0.87 $845.8K -$364.1K 22 2026-02-04
PRTO SVP and Chief Medical Officer 3,206 $28.42 $91.1K $22.6K 14 2019-03-18

Recent Filings · Page 2 of 5

43 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
2024-02-29 AKBA Notice (144) −7,169 -$11.3K EDGAR
2024-02-27 AKBA Notice (144) −8,367 -$12.7K EDGAR
2024-02-02 AKBA Mixed +177,889 -$40.8K EDGAR
2024-02-01 AKBA Notice (144) −24,311 -$40.8K EDGAR
2023-05-18 AKBA Sell (S) −63,567 -$67.9K EDGAR
2023-05-16 AKBA Notice (144) −63,567 -$67.9K EDGAR
2023-03-03 AKBA Sell (S) −14,123 -$12.4K EDGAR
2023-03-01 AKBA Sell (S) −7,539 -$6.1K EDGAR
2023-02-02 AKBA Grant (A) +196,200 $0 EDGAR
2022-09-01 AKBA Sell (S) −1,147 -$416 EDGAR
Showing 1120 of 43
Page 2 of 5
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.