Jefferson Gramm

CIK 1427290 · last filed 2024-12-06

Jefferson Gramm is a corporate insider who has filed 33 SEC Form 4 insider transactions across 6 companies since 2010. Across all open-market trades the lifetime net is +$2.0M, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $125.6M across reported positions. 179 SEC filings were submitted jointly with Bandera Partners LLC.

"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.

Loading insider history…
Disclosed Exposure

$125.57M

Companies

6

Total Filings

33

Lifetime Open-Market Net

$1.96M

Filer Profile

Reported Address
C/O BANDERA PARTNERS LLC
138 ATLANTIC AVENUE
BROOKLYN, NY 11201
Related Filers
Bandera Partners LLC — 179 joint filings, latest 2025-06-03
Gregory Bylinsky — 179 joint filings, latest 2025-06-03
Andrew Shpiz — 98 joint filings, latest 2013-12-31
PEERLESS SYSTEMS CORP — 10 joint filings, latest 2010-11-12
Bandera Master Fund LP — 4 joint filings, latest 2013-04-22
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

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
JYNT 10%+ Owner 2,459,687 $7.85 $19.31M $4.97M 3 2022-10-24
Rubicon Technology, Inc. (RBCN) Delisted Director 131,344 $5.70 $748.5K -$7.98M 8 2022-08-23
TLF Director 5,779,240 $2.62 $15.14M $901.4K 7 2019-03-22
DAVE 10%+ Owner 34,168 $350.71 $11.98M $97.0K 2 2017-07-19
AMBASSADORS GROUP INC (EPAX) Delisted Director 3,084,587 $2.31M 4 2015-05-21
SGU 10%+ Owner 6,144,127 $12.88 $79.14M $1.66M 3 2012-06-25

Recent Filings

33 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
2024-12-06 Buy (P) +1,250,000 $2.00M
2024-07-23 Buy (P) +350,000 $420.0K
2024-07-19 Buy (P) +1,108,349 $1.33M
2023-02-10 Buy (P) +360,000 $90.0K
2022-10-24 JYNT Buy (P) +49,581 $758.1K EDGAR
2022-09-29 JYNT Buy (P) +217,401 $3.44M EDGAR
2022-08-23 Rubicon Technology, Inc. (RBCN) Delisted Sell (S) −398,976 -$7.98M EDGAR
2022-08-01 Rubicon Technology, Inc. (RBCN) Delisted Grant (A) +1,010 $0 EDGAR
2021-06-28 Rubicon Technology, Inc. (RBCN) Delisted Grant (A) +1,250 $0 EDGAR
2020-09-15 Rubicon Technology, Inc. (RBCN) Delisted Grant (A) +1,199 $0 EDGAR
Showing 110 of 33
Page 1 of 4
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.