Hong Fang Song

CIK 2008157 · last filed 2025-09-04

Hong Fang Song is a corporate insider who has filed 6 SEC Form 4 insider transactions across 1 company since 2024. The most recent filing shows the insider sold $2.8M of CGON on Sep 4, 2025. Across all open-market trades the lifetime net is −$40.4M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $266.9M 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

$266.87M

Companies

1

Total Filings

6

Lifetime Open-Market Net

-$40.38M

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
CGON	Director	3,517,959	$75.86	$266.87M	-$40.38M	6	2025-09-04

Recent Filings

6 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
2025-09-04	CGON	Sell (S)	−100,000	-$2.78M	EDGAR
2025-06-06	CGON	Grant (A)	—	$0	EDGAR
2024-12-17	CGON	Sell (S)	−700,000	-$19.60M	EDGAR
2024-10-07	CGON	Grant (A)	—	$0	EDGAR
2024-08-30	CGON	Sell (S)	−650,455	-$23.00M	EDGAR
2024-01-31	CGON	Mixed	+5,555,296	$5.00M	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.