CLFD Insider Trading

Net Selling · 180d
Open-Market Buys (180d)
$0
0 insiders
Open-Market Sells (180d)
$1.2M
4 insiders
Net Insider Flow
-$1.2M
open market, 180d
Reporting Insiders
4
8 P/S transactions
Build

Build on these Form 4 transactions

The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.

Recent Form 4 Transactions

100 shown
DateInsiderRoleActionSharesPriceValue
Jul 1, 2026Beranek CherylChief Executive Officer, DirectorSell(S)2K$40.06$71K
Jun 30, 2026Beranek CherylChief Executive Officer, DirectorGrant(A)210$24.78$5K
Jun 30, 2026Herzog Daniel RChief Financial OfficerGrant(A)752$24.78$19K
Jun 30, 2026Khemakhem AnisChief Commercial OfficerGrant(A)158$24.78$4K
Jun 30, 2026Hill John PChief Operating OfficerGrant(A)459$24.78$11K
Jun 9, 2026Khemakhem AnisChief Commercial OfficerSell(S)2K$39.90$67K
Jun 1, 2026Beranek CherylChief Executive Officer, DirectorSell(S)8K$46.92$352K
May 27, 2026Beranek CherylChief Executive Officer, DirectorSell(S)3K$50.00$125K
May 11, 2026Jones Walter Louis JRDirectorSell(S)2K$46.05$110K
May 11, 2026Beranek CherylChief Executive Officer, DirectorSell(S)3K$45.02$113K
May 8, 2026Beranek CherylChief Executive Officer, DirectorSell(S)5K$40.27$201K
May 6, 2026Khemakhem AnisChief Commercial OfficerTax withholding(F)635$30.28$19K
Feb 27, 2026Seidel RebeccaDirectorGrant(A)3K$0
Feb 27, 2026Roth Ronald GDirector, 10% OwnerGrant(A)3K$0
Feb 27, 2026Skarvan KathleenDirectorGrant(A)3K$0
Feb 27, 2026Sarcevic AdemirDirectorGrant(A)3K$0
Feb 27, 2026Jones Walter Louis JRDirectorGrant(A)3K$0
Feb 27, 2026Kelly Catherine T.DirectorGrant(A)3K$0
Feb 27, 2026Wirsbinski Carol AnnDirectorGrant(A)3K$0
Feb 19, 2026Hayward Donald R.DirectorSell(S)4K$32.00$115K
Dec 31, 2025Herzog Daniel RChief Financial OfficerGrant(A)88$24.78$2K
Dec 31, 2025Hill John PChief Operating OfficerGrant(A)222$24.78$6K
Dec 31, 2025Beranek CherylChief Executive Officer, DirectorGrant(A)210$24.78$5K
Dec 31, 2025Khemakhem AnisChief Commercial OfficerGrant(A)131$24.78$3K
Dec 15, 2025Roth Ronald GDirector, 10% OwnerBuy(P)10K$30.06$301K
Dec 11, 2025Beranek CherylChief Executive Officer, DirectorGift(G)2K$0
Dec 10, 2025Skarvan KathleenDirectorGrant(A)326$0
Dec 10, 2025Seidel RebeccaDirectorGrant(A)326$0
Nov 28, 2025Beranek CherylChief Executive Officer, DirectorGrant(A)26K$0
Nov 28, 2025Hill John PChief Operating OfficerGrant(A)17K$0
Nov 28, 2025Herzog Daniel RChief Financial OfficerGrant(A)11K$0
Nov 20, 2025Beranek CherylChief Executive Officer, DirectorTax withholding(F)3K$28.22$75K
Nov 20, 2025Beranek CherylChief Executive Officer, DirectorGrant(A)11K$0
Nov 20, 2025Beranek CherylChief Executive Officer, DirectorGrant(A)5K$0
Nov 20, 2025Herzog Daniel RChief Financial OfficerGrant(A)3K$0
Nov 20, 2025Herzog Daniel RChief Financial OfficerGrant(A)5K$0
Nov 20, 2025Herzog Daniel RChief Financial OfficerTax withholding(F)824$28.22$23K
Nov 20, 2025Hill John PChief Operating OfficerGrant(A)5K$0
Nov 20, 2025Hill John PChief Operating OfficerTax withholding(F)3K$28.22$75K
Nov 20, 2025Hill John PChief Operating OfficerGrant(A)11K$0
Nov 16, 2025Hill John PChief Operating OfficerTax withholding(F)1K$30.72$31K
Nov 16, 2025Hill John PChief Operating OfficerTax withholding(F)3K$30.72$82K
Nov 16, 2025Hill John PChief Operating OfficerTax withholding(F)2K$30.72$62K
Nov 16, 2025Beranek CherylChief Executive Officer, DirectorTax withholding(F)1K$30.72$31K
Nov 16, 2025Beranek CherylChief Executive Officer, DirectorTax withholding(F)2K$30.72$60K
Nov 16, 2025Beranek CherylChief Executive Officer, DirectorTax withholding(F)2K$30.72$71K
Nov 16, 2025Herzog Daniel RChief Financial OfficerTax withholding(F)510$30.72$16K
Nov 16, 2025Herzog Daniel RChief Financial OfficerTax withholding(F)825$30.72$25K
Nov 16, 2025Herzog Daniel RChief Financial OfficerTax withholding(F)973$30.72$30K
Sep 18, 2025Hill John PChief Operating OfficerTax withholding(F)14K$34.21$479K
Sep 18, 2025Hill John PChief Operating OfficerTax withholding(F)13K$34.21$458K
Sep 18, 2025Hill John PChief Operating OfficerOption exercise(M)24K$12.43$298K
Sep 18, 2025Hill John PChief Operating OfficerOption exercise(M)18K$23.74$422K
Sep 18, 2025Hill John PChief Operating OfficerOption exercise(M)18K$0
Sep 18, 2025Hill John PChief Operating OfficerOption exercise(M)24K$0
Sep 12, 2025Herzog Daniel RChief Financial OfficerTax withholding(F)7K$33.25$226K
Sep 12, 2025Herzog Daniel RChief Financial OfficerOption exercise(M)12K$23.74$280K
Sep 12, 2025Herzog Daniel RChief Financial OfficerTax withholding(F)9K$33.25$314K
Sep 12, 2025Herzog Daniel RChief Financial OfficerOption exercise(M)12K$12.43$149K
Sep 12, 2025Herzog Daniel RChief Financial OfficerOption exercise(M)12K$0
Sep 12, 2025Herzog Daniel RChief Financial OfficerOption exercise(M)12K$0
Aug 8, 2025Beranek CherylChief Executive Officer, DirectorOption exercise(M)18K$23.74$422K
Aug 8, 2025Beranek CherylChief Executive Officer, DirectorTax withholding(F)14K$32.59$470K
Aug 8, 2025Beranek CherylChief Executive Officer, DirectorTax withholding(F)14K$32.59$446K
Aug 8, 2025Beranek CherylChief Executive Officer, DirectorOption exercise(M)24K$12.43$298K
Aug 8, 2025Beranek CherylChief Executive Officer, DirectorOption exercise(M)18K$0
Aug 8, 2025Beranek CherylChief Executive Officer, DirectorOption exercise(M)24K$0
Jun 30, 2025Beranek CherylChief Executive Officer, DirectorGrant(A)197$26.35$5K
Jun 30, 2025Herzog Daniel RChief Financial OfficerGrant(A)683$26.35$18K
Jun 30, 2025Hill John PChief Operating OfficerGrant(A)498$26.35$13K
Feb 28, 2025Roth Ronald GDirector, 10% OwnerGrant(A)2K$0
Feb 28, 2025Jones Walter Louis JRDirectorGrant(A)2K$0
Feb 28, 2025Hayward Donald R.DirectorGrant(A)2K$0
Feb 28, 2025Hayssen Charles NDirectorGrant(A)2K$0
Feb 28, 2025Kelly Catherine T.DirectorGrant(A)2K$0
Feb 28, 2025Wirsbinski Carol AnnDirectorGrant(A)2K$0
Feb 28, 2025Sarcevic AdemirDirectorGrant(A)2K$0
Feb 19, 2025Hill John PChief Operating OfficerSell(S)24K$33.10$788K
Feb 14, 2025Hill John PChief Operating OfficerSell(S)14K$33.05$457K
Feb 12, 2025Hill John PChief Operating OfficerSell(S)17K$33.26$550K
Dec 31, 2024Herzog Daniel RChief Financial OfficerGrant(A)137$26.35$4K
Dec 31, 2024Beranek CherylChief Executive Officer, DirectorGrant(A)198$26.35$5K
Dec 31, 2024Hill John PChief Operating OfficerGrant(A)276$26.35$7K
Dec 11, 2024Kelly Catherine T.DirectorGrant(A)305$0
Dec 11, 2024Sarcevic AdemirDirectorGrant(A)305$0
Dec 6, 2024Beranek CherylChief Executive Officer, DirectorGift(G)475$0
Dec 5, 2024Roth Ronald GDirector, 10% OwnerBuy(P)5K$31.00$155K
Dec 5, 2024Beranek CherylChief Executive Officer, DirectorGift(G)1K$0
Nov 26, 2024Beranek CherylChief Executive Officer, DirectorGrant(A)16K$0
Nov 26, 2024Herzog Daniel RChief Financial OfficerGrant(A)8K$0
Nov 26, 2024Hill John PChief Operating OfficerGrant(A)16K$0
Nov 16, 2024Beranek CherylChief Executive Officer, DirectorTax withholding(F)2K$28.26$55K
Nov 16, 2024Beranek CherylChief Executive Officer, DirectorTax withholding(F)172$28.26$5K
Nov 16, 2024Beranek CherylChief Executive Officer, DirectorTax withholding(F)1K$28.26$29K
Nov 16, 2024Herzog Daniel RChief Financial OfficerTax withholding(F)114$28.26$3K
Nov 16, 2024Herzog Daniel RChief Financial OfficerTax withholding(F)973$28.26$27K
Nov 16, 2024Herzog Daniel RChief Financial OfficerTax withholding(F)510$28.26$14K
Nov 16, 2024Hill John PChief Operating OfficerTax withholding(F)1K$28.26$29K
Nov 16, 2024Hill John PChief Operating OfficerTax withholding(F)2K$28.26$55K
Nov 16, 2024Hill John PChief Operating OfficerTax withholding(F)172$28.26$5K

Data Source

Insider transactions sourced from SEC EDGAR Form 4 filings, normalized within minutes of acceptance. "Buy"/"Sell" mark open-market transactions (codes P/S), the tradeable signal. Awards, option exercises and tax-withholding are shown with their raw code. All data is public domain.

Coverage: Form 4 filings indexed 2020-03-302026-07-30. Earlier history is backfilling; this window widens as it deepens.

Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).