Stephen Bardin

CIK 1942596 · Chief Financial Officer · last filed 2026-04-07

Stephen Bardin is a Chief Financial Officer who has filed 5 SEC Form 4 insider transactions across 2 companies since 2023. The most recent filing, for CALC, was dated Apr 7, 2026. Across all open-market trades the lifetime net is +$4.7K, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $37.3K 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

$37.3K

Companies

2

Total Filings

5

Lifetime Open-Market Net

$4.7K

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
CALC	Chief Financial Officer	43,000	$0.87	$37.3K	$4.7K	4	2026-04-07
ATAI	Chief Financial Officer	—	$3.92	—	$0	1	2023-03-16

Recent Filings

5 filings

Form 4 transactions across all companies, newest first.

Filed	Symbol	Action	Net Shares	Net $	Link
2026-04-07	CALC	Grant (A)	—	$0	EDGAR
2025-06-26	CALC	Mixed	+2,000	$3.0K	EDGAR
2025-06-03	CALC	Buy (P)	+1,000	$1.7K	EDGAR
2025-04-25	CALC	Grant (A)	—	$0	EDGAR
2023-03-16	ATAI	Grant (A)	—	$0	EDGAR

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.