Company · Ownership research

BEL FUSE INC /NJ BELFB

CIK 0000729580

Form 4 transactions dated Nov 1, 2023 to Nov 7, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

Insider filings on file run through Sep 15, 2026.

Insider purchases & sales

Purchased: $12.43K
Sold: $19.99M

Nov 1, 2023 – Sep 15, 2026
Available records · partial months are marked ·

202610 of 13 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
Sep 14, 2026	Vellucci Vincent Director	Sale	$235.15K 1,000 shares sold	11.86% sold Direct holding	▾
Sep 2, 2026	Vellucci Vincent Director	Sale	$95.74K 393 shares sold	4.45% sold Direct holding	▾
Aug 12, 2026	GILBERT PETER E Director	Sale	$146.06K 500 shares sold	40.00% sold Indirect holding	▾
Jun 1, 2026	Kozlovsky Suzanne Global Head of People	Sale	$198.17K 731 shares sold	5.95% sold Direct holding	▾
Mar 16, 2026	Lai Kenneth Koon Keung VP of Asia Operations	Sale	$112.17K 552 shares sold	6.83% sold Direct holding	▾
Mar 16, 2026	BERNSTEIN DANIEL Director · 10% owner	Sale	$1.35M 6,667 shares sold	22.09% sold Direct holding	▾
Mar 16, 2026	Dawson Stephen Pres. - Power Solutions	Sale	$699.86K 3,444 shares sold	22.68% sold Direct holding	▾
Mar 16, 2026	Kozlovsky Suzanne Global Head of People	Sale	$43.49K 214 shares sold	1.71% sold Direct holding	▾
Mar 6, 2026	Bittner Peter Pres. - Connectivity Solution	Sale	$2.40M 12,311 shares sold	79.34% sold Direct holding	▾
Mar 5, 2026	Bittner Peter Pres. - Connectivity Solution	Sale	$2.09M 10,000 shares sold	39.19% sold Direct holding	▾

Showing 13 / 13 record groups in 2026. The complete set is available through the API.

BEL FUSE INC /NJ · BELFB

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The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. For the year shown, this page lists 13 of 13 purchase / sale groups and 16 of 16 other groups; the totals and the monthly series cover the whole window.

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{"action":"list","ticker":"BELFB","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

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Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

Non-cancelled, non-derivative purchase (P) and sale (S) rows dated inside the public window, as reported. Share totals are on today's split-adjusted basis. Includes open-market and private transactions. Data after the latest filing is not asserted complete and is not zero-filled. A grouped event shares filing, transaction date, security, code, direction, ownership bucket and source. Derivative groups also match underlying security, exercise price, exercise/expiration dates and footnote references. Reported rows are retained; P/S price lots can be grouped. Post-transaction balances are never summed.