Casi DeYoung

CIK 1652066 · Chief Business Officer · last filed 2026-01-27

Casi DeYoung is a Chief Business Officer who has filed 12 SEC Form 4 insider transactions across 2 companies since 2016. The most recent filing shows the insider had shares withheld for taxes covering $9.5K of STTK on Jan 27, 2026. Current disclosed insider exposure totals $363.0K 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.

Loading insider history…
Disclosed Exposure

$363.0K

Companies

2

Total Filings

12

Lifetime Open-Market Net

$0

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
STTK Chief Business Officer 73,480 $4.94 $363.0K $0 10 2026-01-27
SYNLOGIC, INC. (MIRN) Delisted Chief Business Officer $0 1 2016-03-14

Recent Filings

12 filings
Form 4 transactions across all companies, newest first.
Filed Symbol Action Net Shares Net $ Link
2026-01-27 STTK Tax (F) −2,286 -$9.5K EDGAR
2026-01-13 STTK Mixed −5,699 -$27.1K EDGAR
2025-01-28 STTK Mixed −2,297 -$2.7K EDGAR
2025-01-13 STTK Tax (F) −5,727 -$6.8K EDGAR
2024-01-31 STTK Tax (F) −2,008 -$20.1K EDGAR
2024-01-16 STTK Mixed +44,617 -$16.0K EDGAR
2023-01-27 STTK Grant (A) +27,100 $0 EDGAR
2023-01-12 STTK Tax (F) −1,583 -$4.8K EDGAR
2022-01-12 STTK Grant (A) +21,363 $0 EDGAR
2020-12-28 STTK Grant (A) $0 EDGAR
Showing 110 of 12
Page 1 of 2
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.