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WINMILL & CO. INC

CIK 52234 · last filed 2026-08-26

WINMILL & CO. INC is a corporate insider who has filed 82 SEC Form 4 insider transactions across 1 company since 2016. The most recent filing shows the insider bought $86.5K of SELF on Aug 26, 2026. Across all open-market trades the lifetime net is +$1.2M, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $1.1M across reported positions. The firm reports its address in Walpole, NH. 15 SEC filings were submitted jointly with BASSETT STARR WINMILL.

"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.

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Disclosed Exposure

$1.11M

Companies

1

Total Filings

82

Lifetime Open-Market Net

$1.17M

Filer Profile

Reported Address
17 OLD DREWSVILLE RD
WALPOLE, NH 03608
Phone
(212) 785-0900
State of Incorporation
DE
Formerly Known As
WINMILL & CO INC (1999–2006)
BULL & BEAR GROUP INC (1995–1999)
Related Filers
BASSETT STARR WINMILL — 15 joint filings, latest 2004-05-18
THOMAS BASSETT WINMILL — 10 joint filings, latest 2003-11-19
CHARLES A CARROLL — 8 joint filings, latest 2004-04-01
MARK CAMPBELL WINMILL — 5 joint filings, latest 2003-11-19
EDWARD G WEBB — 4 joint filings, latest 2004-03-11
BEXIL CORP — 3 joint filings, latest 2000-09-11
TUXIS CORP — 3 joint filings, latest 2000-09-12
SC FUNDAMENTAL LLC — 1 joint filings, latest 2003-11-26
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
SELF 220,751 $5.05 $1.11M $1.17M 26 2026-08-26

Recent Filings

82 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
2026-08-26 SELF Buy (P) +15,308 $86.5K EDGAR
2026-08-24 SELF Buy (P) +15,139 $83.9K EDGAR
2026-08-20 SELF Buy (P) +13,778 $74.6K EDGAR
2026-08-18 — Buy (P) +7,700 $138.9K
2026-08-18 SELF Buy (P) +12,853 $68.4K EDGAR
2026-08-14 — Buy (P) +10,450 $188.6K
2026-08-14 SELF Buy (P) +11,658 $60.8K EDGAR
2026-08-12 — Buy (P) +10,250 $184.0K
2026-08-12 SELF Buy (P) +12,135 $62.6K EDGAR
2026-08-10 — Buy (P) +10,000 $177.8K
Showing 1–10 of 82
Page 1 of 9
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.