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Jennifer Koester

CIK 2008791 · President & COO, Sphere · last filed 2026-03-17

Jennifer Koester is a President & COO, Sphere who has filed 8 SEC Form 4 insider transactions across 1 company since 2024. The most recent filing, for SPHR, was dated Mar 17, 2026. Current disclosed insider exposure totals $4.6M 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.

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Disclosed Exposure

$4.59M

Companies

1

Total Filings

8

Lifetime Open-Market Net

$0

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
SPHR President & COO, Sphere 30,918 $148.58 $4.59M $0 8 2026-03-17

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
2026-03-17 SPHR Mixed +8,446 -$931.0K EDGAR
2026-03-13 SPHR Grant (A) — $0 EDGAR
2025-09-17 SPHR Mixed +13,260 -$833.6K EDGAR
2025-03-14 SPHR Grant (A) — $0 EDGAR
2024-09-17 SPHR Mixed +9,212 -$405.6K EDGAR
2024-08-29 SPHR Grant (A) — $0 EDGAR
2024-04-24 SPHR Grant (A) — $0 EDGAR
2024-02-07 SPHR Grant (A) — $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.