William K Obrien

CIK 1187425 · last filed 2022-10-28

William K Obrien is a corporate insider who has filed 23 SEC Form 4 insider transactions across 2 companies since 2007. The most recent filing, for MRCY, was dated Oct 28, 2022. Across all open-market trades the lifetime net is −$125.9K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $5.3M across reported positions. 2 SEC filings were submitted jointly with BROCADE COMMUNICATIONS SYSTEMS INC.

"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

$5.35M

Companies

Total Filings

Lifetime Open-Market Net

-$125.9K

Charts

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

MRCY 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.

Filer Profile

Related Filers

BROCADE COMMUNICATIONS SYSTEMS INC — 2 joint filings, latest 2004-08-03

Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses.

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
MRCY	Director	67,091	$79.71	$5.35M	-$125.9K	19	2022-10-28
COLOR KINETICS INC (CLRK) Delisted	Director	0	—	—	$0	4	2007-08-27

Recent Filings

23 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
2022-10-28	MRCY	Grant (A)	+3,976	$0	EDGAR
2021-10-29	MRCY	Grant (A)	+3,518	$0	EDGAR
2020-10-30	MRCY	Grant (A)	+1,950	$0	EDGAR
2019-10-25	MRCY	Grant (A)	+1,961	$0	EDGAR
2019-09-13	MRCY	Sell (S)	−1,563	-$125.9K	EDGAR
2018-10-26	MRCY	Grant (A)	+2,892	$0	EDGAR
2017-10-20	MRCY	Grant (A)	+2,939	$0	EDGAR
2017-10-11	MRCY	Mixed	+5,853	-$37	EDGAR
2016-10-20	MRCY	Grant (A)	+4,186	$0	EDGAR
2016-10-07	MRCY	Mixed	+4,609	-$3	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.