Nack Y Paek

CIK 1254478 · Chief Executive Officer · last filed 2026-06-02

Nack Y Paek is a Chief Executive Officer who has filed 15 SEC Form 4 insider transactions across 1 company since 2020. The most recent filing shows the insider was granted $1.0M of MCBS on Jun 2, 2026. Across all open-market trades the lifetime net is −$4.0M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $49.6M 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.

Disclosed Exposure

$49.64M

Companies

Total Filings

Lifetime Open-Market Net

-$4.01M

Charts

Trading activity, where the exposure sits, and each trade against the stock price.

MCBS price and trades

Daily close with each Form 4 filing on this company marked: green = open-market buy, red = open-market sale, purple = grants, exercises, gifts and other non-market transactions. Marker size scales with the dollar value.

Shares held

Shares owned after each reported transaction on this company (direct holdings as reported).

Open-market buying and selling

by month

Dollar value of open-market purchases (code P, up) and sales (code S, down) across all companies, by filing month. Grants, exercises and gifts are excluded.

Exposure by company

latest

OfficerDirector10% owner* stale (no filing in 3 yrs)

Most recently reported shares × current price. Faded bars (*) have had no filing in 3 years, so the person may no longer hold them. Click a bar to chart that company.

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
MCBS	Chief Executive Officer	1,404,545	$35.34	$49.64M	-$4.01M	15	2026-06-02

Recent Filings

15 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
2026-06-02	MCBS	Grant (A)	+31,107	$1.02M	EDGAR
2025-06-03	MCBS	Grant (A)	+35,616	$995.1K	EDGAR
2024-12-09	MCBS	Exer (M)	+23,622	$300.0K	EDGAR
2024-07-26	MCBS	Sell (S)	−50,000	-$1.54M	EDGAR
2024-06-04	MCBS	Grant (A)	+34,215	$843.4K	EDGAR
2023-11-14	MCBS	Sell (S)	−29,563	-$612.8K	EDGAR
2023-11-13	MCBS	Sell (S)	−20,437	-$414.7K	EDGAR
2023-06-02	MCBS	Grant (A)	+62,572	$1.03M	EDGAR
2022-06-02	MCBS	Grant (A)	+49,287	$1.00M	EDGAR
2021-07-08	MCBS	Grant (A)	+20,912	$359.9K	EDGAR

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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.