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Filing year 2024

Gustavus and Louise Pfeiffer Research Foundation

Wilmington, Delaware·EIN 13-6086299·3
Total revenue
$1.6M
Total assets
$19.6M
Total expenses
$0
Reported officers
5

Executive compensation

Form 990-PF · Schedule J · 5 reported individuals · Filing year 2024

Base salaryExecutive compensation
Dir, Sec, Treas
unclassified
$7k
$8k
Dir, Pres
unclassified
$7k
$8k
Dir, As Sec, As Treas
unclassified
$7k
$8k
Dir, VP
vice president
$7k
$8k
Dir
unclassified
$5k
$6k

Teal figures restate each filed amount in 2026 dollars.

Estimated with Philadelphia-Camden-Wilmington, PA-NJ-DE-MD metro-area CPI-U, restating filed pay into April 2026 dollars. A restatement of past pay, not current or projected pay.

Financial trend

Revenue and expenses over time

Gustavus and Louise Pfeiffer Research Foundation reported revenue and expenses across 2 filing years.

RevenueExpenses
$934k
2023
$1.6M
2024
Total revenue and total expenses from IRS Form 990 filings.
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