Kristen M Oelschlager

CIK 1856565 · Chief Operating Officer · last filed 2026-08-05

Kristen M Oelschlager is a Chief Operating Officer who has filed 34 SEC Form 4 insider transactions across 1 company since 2021. The most recent filing shows the insider sold $255.6K of CSTL on Aug 5, 2026. Across all open-market trades the lifetime net is −$4.6M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $3.4M 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

$3.41M

Companies

1

Total Filings

34

Lifetime Open-Market Net

-$4.57M

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
CSTL	Chief Operating Officer	110,539	$30.87	$3.41M	-$4.57M	28	2026-08-05

Recent Filings

34 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
2026-08-05	CSTL	Sell (S)	−8,586	-$255.6K	EDGAR
2026-07-06	CSTL	Sell (S)	−8,586	-$209.7K	EDGAR
2026-06-18	CSTL	Sell (S)	−8,587	-$177.8K	EDGAR
2026-06-16	CSTL	Notice (144)	−29,911	-$618.0K	EDGAR
2026-03-05	CSTL	Mixed	+16,552	-$258.2K	EDGAR
2026-01-14	CSTL	Grant (A)	+9,207	$0	EDGAR
2025-12-19	CSTL	Sell (S)	−14,888	-$585.3K	EDGAR
2025-12-17	CSTL	Notice (144)	−14,888	-$581.4K	EDGAR
2025-12-11	CSTL	Mixed	+14,888	-$276.5K	EDGAR
2025-11-13	CSTL	Sell (S)	−18,932	-$664.5K	EDGAR

Showing 1–10 of 34

Page 1 of 4 Next

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.