John W. Chamberlain

CIK 1508168 · CEO and President · last filed 2015-01-20

John W. Chamberlain is a CEO and President who has filed 15 SEC Form 4 insider transactions across 1 company since 2011. The most recent filing shows the insider had shares withheld for taxes covering $2.5M of AAT on Jan 20, 2015. Across all open-market trades the lifetime net is −$766.2K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $4.5M 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

$4.47M

Companies

1

Total Filings

15

Lifetime Open-Market Net

-$766.2K

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
AAT	CEO and President	175,302	$25.51	$4.47M	-$766.2K	15	2015-01-20

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
2015-01-20	AAT	Tax (F)	−55,531	-$2.46M	EDGAR
2014-12-02	AAT	Mixed	+16,888	-$111.3K	EDGAR
2014-08-27	AAT	Sell (S)	−7,000	-$243.2K	EDGAR
2014-03-25	AAT	Grant (A)	+22,592	$0	EDGAR
2014-01-21	AAT	Tax (F)	−54,215	-$1.71M	EDGAR
2013-08-19	AAT	Sell (S)	−8,000	-$242.3K	EDGAR
2013-08-05	AAT	Sell (S)	−2,818	-$91.4K	EDGAR
2013-06-05	AAT	Sell (S)	−2,500	-$80.3K	EDGAR
2013-05-20	AAT	Sell (S)	−5,000	-$174.8K	EDGAR
2013-05-14	AAT	Conv (C)	+2,818	$0	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.