CHRISTOPHER Y CHAI

CIK 1413823 · Chief Financial Officer · last filed 2026-05-14

CHRISTOPHER Y CHAI is a Chief Financial Officer who has filed 26 SEC Form 4 insider transactions across 3 companies since 2008. The most recent filing, for SRZNW, was dated May 14, 2026. Across all open-market trades the lifetime net is −$3.3M, making them a net seller over the disclosed history.

"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

$0

Companies

3

Total Filings

26

Lifetime Open-Market Net

-$3.33M

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
SRZNW Director $0.02 $0 5 2026-05-14
Principia Biopharma Inc. (PRNB) Delisted Chief Financial Officer 0 -$1.73M 6 2020-09-28
MAPP SVP, Chief Financial Officer 0 $27.73 $0 -$1.61M 15 2013-03-04

Recent Filings

26 filings
Form 4 transactions across all companies, newest first.
Filed Symbol Action Net Shares Net $ Link
2026-05-14 SRZNW Grant (A) $0 EDGAR
2025-05-15 SRZNW Grant (A) $0 EDGAR
2024-06-06 SRZNW Grant (A) $0 EDGAR
2023-05-19 SRZNW Grant (A) $0 EDGAR
2022-06-09 SRZNW Grant (A) $0 EDGAR
2020-09-28 Principia Biopharma Inc. (PRNB) Delisted Mixed −7,101 -$710.1K EDGAR
2020-08-20 Principia Biopharma Inc. (PRNB) Delisted Mixed -$722.8K EDGAR
2020-05-21 Principia Biopharma Inc. (PRNB) Delisted Mixed −1,825 -$471.3K EDGAR
2020-03-05 Principia Biopharma Inc. (PRNB) Delisted Grant (A) $0 EDGAR
2020-02-20 Principia Biopharma Inc. (PRNB) Delisted Mixed −5,000 -$486.7K EDGAR
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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.