Cellectar Biosciences, Inc. (CLRB) IPO — S-1 Filing, Stock & Insider Activity

Cellectar Biosciences, Inc. IPO — Status & S-1 Filing

Ticker: CLRB
Status: Registered — S-1 filed with the SEC
S-1 filed: 2026-05-19
Exchange: NASDAQ
Expected price range: $5.25–$165.00
Shares offered: 51,206,051
SEC CIK: 0001279704 · View the S-1 on SEC EDGAR →

Track every registration update on the InsiderAlpha IPO tracker.

Updated Jul 16, 2026 · Last SEC filing 2026-07-11

Cellectar Biosciences, Inc. (CLRB) has filed 12 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-11. 4 Form 8-K material event filings were reported by CLRB in the last 90 days. InsiderAlpha tracks every CLRB SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.

About Cellectar Biosciences, Inc. (CLRB)

SEC CIK	0001279704

90-Day SEC Filing Activity

Form 4 filings (90d)	12
Form 8-K filings (90d)	4
Latest Form 4 filing	2026-07-11

Recent CLRB Insider Transactions (Form 4)

Date	Insider	Role	Transaction	Shares	Price	Value	Filing
2026-05-07	CARUSO JAMES V	Chief Executive Officer	P — Open-market purchase	8.7K	$2.88	$25K	SEC
2026-05-07	Longcor Jarrod	Chief Operating Officer	P — Open-market purchase	8.7K	$2.88	$25K	SEC
2025-12-12	NEIS JOHN	Director	S — Open-market sale	198	$3.70	$732	SEC
2025-07-02	CARUSO JAMES V	Chief Executive Officer	P — Open-market purchase	10.0K	$4.99	$50K	SEC
2025-07-02	Longcor Jarrod	Chief Operating Officer	P — Open-market purchase	10.0K	$4.99	$50K	SEC
2025-07-02	Kolean Chad J	Chief Financial Officer	P — Open-market purchase	5.0K	$4.99	$25K	SEC

All transactions sourced from SEC EDGAR Form 4 filings for Cellectar Biosciences, Inc. (CLRB). Updated in real time as new filings are submitted to the SEC.

Most-Active CLRB Insiders — Last 90 Days

Insider	Form 4 filings	Total transaction value
CARUSO JAMES V	3	$25K
Longcor Jarrod	3	$25K
Loren Stefan	2	—
NEIS JOHN	1	—
Chanan-Khan Asher	1	—

Recent CLRB Form 8-K Material Events

2026-07-10 — Item 5.02, 5.07, 9.01 [SEC]
2026-05-18 — Item 5.02 [SEC]
2026-05-14 — Item 2.02, 9.01 [SEC]
2026-05-08 — Item 1.01, 3.02, 8.01, 9.01 [SEC]
2026-03-04 — Item 2.02, 9.01 · Earnings · neutral [SEC]
Cellectar Biosciences issued a press release on March 4, 2026 announcing financial results for the year ended December 31, 2025 and providing corporate updates. The filing contains standard annual financial results reporting without explicit beat/miss language or forward guidance

Recent Insider Filings

2026-07-11 — Loren Stefan (Insider)
2026-07-09 — Kolean Chad J (CFO)
2026-07-09 — DRISCOLL FREDERICK W (Director)
2026-07-09 — Chanan-Khan Asher (Director)
2026-07-09 — CARUSO JAMES V (President & CEO)

Form 4 Transaction Code Reference

SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in CLRB insider filings:

P	Open-market purchase by the insider
S	Open-market sale by the insider
A	Grant, award, or other acquisition from the issuer
M	Exercise or conversion of derivative security (e.g. options)
F	Payment of exercise price or tax liability via share withholding
G	Bona-fide gift of securities
D	Disposition to the issuer (e.g. share buyback participation)
J	Other acquisition or disposition
X	Exercise of in-the-money or at-the-money derivative security
C	Conversion of derivative security
V	Transaction voluntarily reported earlier than required

CLRB Insider Trading — FAQ

What is the latest insider trade for CLRB?: Cellectar Biosciences, Inc. (CLRB) had 12 insider filings in the last 90 days, with the most recent on 2026-07-11. InsiderAlpha tracks every Form 4, 10-K, 10-Q, and 8-K filing in real time.
How many insiders are buying CLRB stock?: 0 insider purchases of CLRB were filed in the last 90 days.
How many insiders are selling CLRB stock?: 0 insider sales of CLRB were filed in the last 90 days.
Where can I see CLRB SEC filings (Form 4, 10-K, 10-Q, 8-K)?: InsiderAlpha aggregates every CLRB SEC filing — Form 4 insider transactions, 10-K and 10-Q quarterly reports, and 8-K material event disclosures — in one timeline.

Learn More

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