DAVID R WELLAND

CIK 1134854 · Vice President & Fellow · last filed 2014-12-04

DAVID R WELLAND is a Vice President & Fellow who has filed 9 SEC Form 4 insider transactions across 1 company since 2007. The most recent filing, for SLAB, was dated Dec 4, 2014. Across all open-market trades the lifetime net is −$7.6M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $372.6M 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

$372.55M

Companies

1

Total Filings

9

Lifetime Open-Market Net

-$7.63M

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
SLAB	Vice President & Fellow	1,713,131	$217.47	$372.55M	-$7.63M	9	2014-12-04

Recent Filings

9 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
2014-12-04	SLAB	Gift (G)	−159,000	$0	EDGAR
2007-04-19	SLAB	Sell (S)	−30,000	-$948.7K	EDGAR
2007-04-04	SLAB	Sell (S)	−30,000	-$898.5K	EDGAR
2007-03-22	SLAB	Sell (S)	−30,000	-$882.9K	EDGAR
2007-03-08	SLAB	Sell (S)	−30,000	-$887.6K	EDGAR
2007-02-21	SLAB	Sell (S)	−30,000	-$953.5K	EDGAR
2007-02-07	SLAB	Sell (S)	−30,000	-$995.4K	EDGAR
2007-01-18	SLAB	Sell (S)	−30,000	-$1.02M	EDGAR
2007-01-04	SLAB	Sell (S)	−30,000	-$1.04M	EDGAR

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.