WINMILL & CO. INC
SEC Form 4 insider trading activity
WINMILL & CO. INC has filed 29 SEC Form 4 filings (64 transaction rows) across 2 companies, including SELF, BXSY, with disclosures dating back to 2025. 28 of those filings fall inside the rolling window. Most recent filing: Aug 26, 2026.
On the most recent filing, WINMILL & CO. INC is listed as Insider at Global Self Storage, Inc. Inside the rolling window, WINMILL & CO. INC reported 52 open-market purchases totaling $2.5M in SELF and BXSY and no open-market sales. The largest disclosed transaction in the window is a purchase of 5,250 BXSY shares on Aug 13, 2026, worth $95K.
Companies traded
Other insiders at SELF
Insider Buying
$2.5M
reported purchases (SEC code P)
Insider Selling
$0
reported sales (SEC code S)
Companies
2
in the rolling window
| Source | |||||||
|---|---|---|---|---|---|---|---|
| SELF | See "Explanation of Responses" | Purchase | 7,547 | $43K | Aug 26 | SEC ↗ | |
| SELF | See "Explanation of Responses" | Purchase | 7,761 | $44K | Aug 26 | SEC ↗ | |
| SELF | See "Explanation of Responses" | Purchase | 7,117 | $39K | Aug 24 | SEC ↗ | |
| SELF | See "Explanation of Responses" | Purchase | 8,022 | $45K | Aug 24 | SEC ↗ | |
| SELF | See "Explanation of Responses" | Purchase | 6,877 | $37K | Aug 20 | SEC ↗ | |
| SELF | See "Explanation of Responses" | Purchase | 6,901 | $37K | Aug 20 | SEC ↗ | |
| SELF | See "Explanation of Responses" | Purchase | 7,117 | $38K | Aug 18 | SEC ↗ | |
| SELF | See "Explanation of Responses" | Purchase | 5,736 | $31K | Aug 18 | SEC ↗ | |
| BXSY | See "Explanation of Responses" | Purchase | 5,200 | $94K | Aug 18 | SEC ↗ | |
| BXSY | See "Explanation of Responses" | Purchase | 2,500 | $45K | Aug 18 | SEC ↗ | |
| BXSY | See "Explanation of Responses" | Purchase | 5,250 | $95K | Aug 14 | SEC ↗ | |
| BXSY | See "Explanation of Responses" | Purchase | 5,200 | $94K | Aug 14 | SEC ↗ | |
| SELF | See "Explanation of Responses" | Purchase | 5,629 | $29K | Aug 14 | SEC ↗ | |
| SELF | See "Explanation of Responses" | Purchase | 6,029 | $32K | Aug 14 | SEC ↗ | |
| SELF | See "Explanation of Responses" | Purchase | 5,887 | $30K | Aug 12 | SEC ↗ | |
| SELF | See "Explanation of Responses" | Purchase | 6,248 | $32K | Aug 12 | SEC ↗ | |
| BXSY | See "Explanation of Responses" | Purchase | 5,000 | $90K | Aug 12 | SEC ↗ | |
| BXSY | See "Explanation of Responses" | Purchase | 5,250 | $94K | Aug 12 | SEC ↗ | |
| BXSY | See "Explanation of Responses" | Purchase | 5,000 | $89K | Aug 10 | SEC ↗ | |
| BXSY | See "Explanation of Responses" | Purchase | 5,000 | $89K | Aug 10 | SEC ↗ | |
| BXSY | See "Explanation of Responses" | Purchase | 5,000 | $89K | Aug 6 | SEC ↗ | |
| BXSY | See "Explanation of Responses" | Purchase | 2,310 | $41K | Aug 6 | SEC ↗ | |
| BXSY | See "Explanation of Responses" | Purchase | 5,000 | $86K | Aug 3 | SEC ↗ | |
| BXSY | See "Explanation of Responses" | Purchase | 2,029 | $34K | Jul 29 | SEC ↗ | |
| BXSY | See "Explanation of Responses" | Purchase | 5,000 | $85K | Jul 29 | SEC ↗ |
Earlier trades
Open-market purchases and sales filed before the rolling 365-day window, kept from the original Form 4 filings.
| Date | Ticker | Type | Value |
|---|---|---|---|
| Aug 29, 2025 | SELF | Purchase | $25K |
Frequently asked questions
How many SEC Form 4 filings has WINMILL & CO. INC made?
WINMILL & CO. INC has filed 29 SEC Form 4 filings (64 transaction rows) across 2 companies, including SELF, BXSY since 2025.
Which companies does WINMILL & CO. INC trade?
WINMILL & CO. INC has filed SEC Form 4 disclosures for 2 companies, including SELF, BXSY.
When was WINMILL & CO. INC's most recent SEC Form 4 filing?
WINMILL & CO. INC's most recent SEC Form 4 filing on Tracefour is dated Aug 26, 2026.
What is WINMILL & CO. INC's total buy and sell value in the current window?
Inside the rolling retention window, WINMILL & CO. INC bought $2.5M and sold $0 based on SEC Form 4 filings.
What was WINMILL & CO. INC's largest disclosed transaction?
The largest disclosed transaction in the current window is a purchase of 5,250 BXSY shares on 2026-08-13, worth $95K, per SEC Form 4 filings.