Company · Ownership research

BEL FUSE INC /NJ BELFB

CIK 0000729580

Form 4 transactions dated Sep 1, 2023 to Sep 23, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

Insider filings on file run through 2026-09-04.

Insider purchases & sales

Purchased: $78.47K
Sold: $20.48M

Sep 1, 2023 – Sep 4, 2026
Available records · partial months are marked ·

202610 of 12 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
2026-09-02	Vellucci Vincent Director	Sale	$95.74K 393 shares sold	4.45% sold Direct holding	▾
2026-08-12	GILBERT PETER E Director	Sale	$146.06K 500 shares sold	40.00% sold Indirect holding	▾
2026-06-01	Kozlovsky Suzanne Global Head of People	Sale	$198.17K 731 shares sold	5.95% sold Direct holding	▾
2026-03-16	Lai Kenneth Koon Keung VP of Asia Operations	Sale	$112.17K 552 shares sold	6.83% sold Direct holding	▾
2026-03-16	BERNSTEIN DANIEL Director · 10% owner	Sale	$1.35M 6,667 shares sold	22.09% sold Direct holding	▾
2026-03-16	Dawson Stephen Pres. - Power Solutions	Sale	$699.86K 3,444 shares sold	22.68% sold Direct holding	▾
2026-03-16	Kozlovsky Suzanne Global Head of People	Sale	$43.49K 214 shares sold	1.71% sold Direct holding	▾
2026-03-06	Bittner Peter Pres. - Connectivity Solution	Sale	$2.40M 12,311 shares sold	79.34% sold Direct holding	▾
2026-03-05	Bittner Peter Pres. - Connectivity Solution	Sale	$2.09M 10,000 shares sold	39.19% sold Direct holding	▾
2026-02-25	Tuweiq Farouq Salem Ali President and CEO · Director	Sale	$669.95K 3,100 shares sold	100.00% sold Direct holding	▾

Showing 12 / 12 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 12 of 12 purchase / sale groups and 16 of 16 other groups; the totals and the monthly series cover the whole window.

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{"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. 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.