DAVID W NIEMIEC

CIK 1102903 · last filed 2026-03-10

"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

$1.94M

Companies

2

Total Filings

29

Lifetime Open-Market Net

$906.6K

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
HESM	Director	50,527	$38.49	$1.94M	$575.0K	15	2026-03-10
OSI PHARMACEUTICALS INC (OSIP) Delisted	Director	0	—	—	$331.6K	6	2010-06-09

Recent Filings · Page 3 of 3

29 filings

Form 4 transactions across all companies, newest first.

Filed	Symbol	Action	Net Shares	Net $	Link
2009-06-19	OSI PHARMACEUTICALS INC (OSIP) Delisted	Grant (A)	+2,500	$0	EDGAR
2009-05-22	—	Grant (A)	—	$0
2008-06-16	—	Grant (A)	—	$0
2008-06-13	OSI PHARMACEUTICALS INC (OSIP) Delisted	Grant (A)	+1,500	$0	EDGAR
2007-11-16	—	Other (J)	+15,194	$0
2007-08-30	—	Grant (A)	—	$0
2007-07-06	—	Sell (S)	−2,917	-$85.1K
2007-06-15	OSI PHARMACEUTICALS INC (OSIP) Delisted	Grant (A)	+1,500	$0	EDGAR
2007-03-12	OSI PHARMACEUTICALS INC (OSIP) Delisted	Buy (P)	+10,000	$331.6K	EDGAR

Showing 21–29 of 29

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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.