Alexander M Knaster

CIK 1308574 · last filed 2022-11-23

Alexander M Knaster is a corporate insider who has filed 8 SEC Form 4 insider transactions across 3 companies since 2007. The most recent filing shows the insider sold $513.9M of PRVA on Nov 23, 2022. Across all open-market trades the lifetime net is −$512.6M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $692.2M across reported positions. 14 SEC filings were submitted jointly with John C. Halsted.

"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

$692.24M

Companies

3

Total Filings

8

Lifetime Open-Market Net

-$512.58M

Charts

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

Filer Profile

Reported Address

C/O PAMPLONA CAPITAL MANAGEMENT LLP
25 PARK LANE
LONDON W1K 1RA

Related Filers

John C. Halsted — 14 joint filings, latest 2023-05-11

Pamplona Capital Management, LLC — 14 joint filings, latest 2023-05-11

Pamplona Capital Management (Monaco) SAM — 7 joint filings, latest 2022-05-04

Pamplona PE Investments II, Ltd. — 6 joint filings, latest 2023-05-11

Pamplona Equity Carryco Advisors III, Ltd. — 5 joint filings, latest 2023-05-11

Pamplona Capital Partners V, L.P. — 3 joint filings, latest 2022-01-12

Pamplona Equity Carryco Advisors V, Ltd. — 2 joint filings, latest 2022-05-04

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. View filings on SEC EDGAR.

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
PRVA	10%+ Owner	17,741,723	$19.62	$348.09M	-$513.94M	2	2022-11-23
SWIM	Director	51,845,685	$6.14	$318.33M	$0	1	2022-01-12
NBR	Director	334,000	$77.28	$25.81M	$1.36M	5	2008-11-14

Recent Filings

8 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
2022-11-23	PRVA	Sell (S)	−22,780,850	-$513.94M	EDGAR
2022-04-06	PRVA	Other (J)	—	$0	EDGAR
2022-01-12	SWIM	Disp (D)	−77,047,168	-$1.44B	EDGAR
2008-11-14	NBR	Buy (P)	+60,000	$807.0K	EDGAR
2008-11-14	NBR	Disp (D)	−25,000	$0	EDGAR
2008-10-31	NBR	Buy (P)	+40,000	$551.5K	EDGAR
2008-02-26	NBR	Grant (A)	+12,000	$0	EDGAR
2007-02-26	NBR	Grant (A)	+12,000	$0	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.