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

$4.44M

Companies

2

Total Filings

36

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 $0.92 $896.0K -$364.1K 22 2026-02-04
PRTO SVP and Chief Medical Officer 128,250 $27.65 $3.55M $22.6K 14 2019-03-18

Recent Filings · Page 2 of 4

36 filings
Form 4 transactions across all companies, newest first.
Filed Symbol Action Net Shares Net $ Link
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
2022-05-16 AKBA Grant (A) +200,000 $0 EDGAR
2022-03-02 AKBA Mixed +44,944 -$32.6K EDGAR
2021-09-02 AKBA Sell (S) −1,042 -$2.9K EDGAR
2021-04-01 AKBA Sell (S) −1,081 -$3.7K EDGAR
2021-03-18 AKBA Grant (A) +10,400 $0 EDGAR
2021-03-02 AKBA Mixed +62,442 -$25.7K EDGAR
2020-03-02 AKBA Grant (A) +62,000 $0 EDGAR
Showing 1120 of 36
Page 2 of 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.