WINMILL MARK CAMPBELL
President and CEO
PurchaseAlert
- Shares
- 292
- Price
- $5.16
- Value
- $1,507
SEC EDGAR · Forms 3/4/5Updated through Oct 30, 2026•37 filings
SELF
Global Self Storage, Inc.
Net purchases of $465.8K over the last 3 months
3 buyers account for the net balance. There is no cluster of three distinct buyers within 30 days. We found 9 CEO/CFO purchases over 12 months.
How to read this signal
Only open-market P purchases and S sales count toward the signal. Vesting, options, taxes and gifts remain in the source data but do not trigger alerts. Rule 10b5-1 trades are shown as informational.
3-month balance
+$465,813
3 buyers · 0 sellers
12-month purchases
$940,668
4 distinct insiders
12-month sales
$0.00
0 distinct insiders
Highlighted alerts
45
0 Rule 10b5-1 trades treated as informational
Buying cluster · 30 days
Fewer than three distinct buyers
CEO/CFO purchases · 12 months
9 executive purchases found
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Form 4 raw → Raspberry
The value is in what we do not call a signal.
The SEC XML stores every transaction. Raspberry keeps that evidence, reads the footnotes and separates voluntary open-market activity from vesting, option exercises, gifts, tax withholding, stock purchase and dividend reinvestment plans and pre-programmed 10b5-1 trades.
62
Raw transactions
Everything returned by the filing
45
Voluntary view
P/S trades after deterministic checks
17
Administrative noise
Stored, never alerted
0
10b5-1
Shown as informational
SEC ownership XML facts
- Code
- A
- Shares
- 196
- Price
- $5.10
- Footnotes
- 1
Shares are compensation for director fees in lieu of cash and are fully vested. The Reporting Person has dividend and voting rights on all these shares.
Recent transactions
Voluntary purchases and sales; administrative noise stays hidden.
WINMILL MARK CAMPBELL
President and CEO
PurchaseAlert
- Shares
- 50
- Price
- $5.16
- Value
- $258.00
WINMILL MARK CAMPBELL
President and CEO
PurchaseAlert
- Shares
- 2,058
- Price
- $5.16
- Value
- $10,619
WINMILL MARK CAMPBELL
President and CEO
PurchaseAlert
- Shares
- 1,600
- Price
- $5.16
- Value
- $8,256
WINMILL & CO. INC
See "Explanation of Responses"
PurchaseAlert
- Shares
- 7,761
- Price
- $5.64
- Value
- $43,757
WINMILL & CO. INC
See "Explanation of Responses"
PurchaseAlert
- Shares
- 7,547
- Price
- $5.66
- Value
- $42,695
WINMILL & CO. INC
See "Explanation of Responses"
PurchaseAlert
- Shares
- 8,022
- Price
- $5.62
- Value
- $45,046
WINMILL & CO. INC
See "Explanation of Responses"
PurchaseAlert
- Shares
- 7,117
- Price
- $5.45
- Value
- $38,805
WINMILL & CO. INC
See "Explanation of Responses"
PurchaseAlert
- Shares
- 6,901
- Price
- $5.42
- Value
- $37,417
WINMILL & CO. INC
See "Explanation of Responses"
PurchaseAlert
- Shares
- 6,877
- Price
- $5.40
- Value
- $37,163
WINMILL & CO. INC
See "Explanation of Responses"
PurchaseAlert
- Shares
- 5,736
- Price
- $5.32
- Value
- $30,507
WINMILL & CO. INC
See "Explanation of Responses"
PurchaseAlert
- Shares
- 7,117
- Price
- $5.33
- Value
- $37,936
WINMILL & CO. INC
See "Explanation of Responses"
PurchaseAlert
- Shares
- 6,029
- Price
- $5.23
- Value
- $31,511
BURKE RUSSELL E III
Director
PurchaseAlert
- Shares
- 1,625
- Price
- $5.21
- Value
- $8,459
WINMILL & CO. INC
See "Explanation of Responses"
PurchaseAlert
- Shares
- 5,629
- Price
- $5.20
- Value
- $29,277
WINMILL & CO. INC
See "Explanation of Responses"
PurchaseAlert
- Shares
- 6,248
- Price
- $5.15
- Value
- $32,192
WINMILL & CO. INC
See "Explanation of Responses"
PurchaseAlert
- Shares
- 5,887
- Price
- $5.17
- Value
- $30,409
WINMILL MARK CAMPBELL
President and CEO
PurchaseAlert
- Shares
- 4,000
- Price
- $5.33
- Value
- $21,320
WINMILL MARK CAMPBELL
President and CEO
PurchaseAlert
- Shares
- 3,600
- Price
- $5.09
- Value
- $18,324
WINMILL MARK CAMPBELL
President and CEO
PurchaseAlert
- Shares
- 800
- Price
- $5.05
- Value
- $4,040
WINMILL MARK CAMPBELL
President and CEO
PurchaseAlert
- Shares
- 6,000
- Price
- $5.14
- Value
- $30,849
WINMILL MARK CAMPBELL
President and CEO
PurchaseAlert
- Shares
- 6,000
- Price
- $5.13
- Value
- $30,770
Klimoski Donald II
General Counsel
PurchaseAlert
- Shares
- 446
- Price
- $5.05
- Value
- $2,252
WINMILL & CO. INC
See "Explanation of Responses"
PurchaseAlert
- Shares
- 3,062
- Price
- $5.18
- Value
- $15,853
WINMILL & CO. INC
See "Explanation of Responses"
PurchaseAlert
- Shares
- 3,342
- Price
- $5.16
- Value
- $17,229
WINMILL & CO. INC
See "Explanation of Responses"
PurchaseAlert
- Shares
- 4,873
- Price
- $5.17
- Value
- $25,175
WINMILL & CO. INC
See "Explanation of Responses"
PurchaseAlert
- Shares
- 4,547
- Price
- $5.18
- Value
- $23,567
WINMILL & CO. INC
See "Explanation of Responses"
PurchaseAlert
- Shares
- 4,064
- Price
- $5.14
- Value
- $20,904
WINMILL & CO. INC
See "Explanation of Responses"
PurchaseAlert
- Shares
- 6,226
- Price
- $5.09
- Value
- $31,673
WINMILL & CO. INC
See "Explanation of Responses"
PurchaseAlert
- Shares
- 5,870
- Price
- $5.08
- Value
- $29,842
WINMILL & CO. INC
See "Explanation of Responses"
PurchaseAlert
- Shares
- 6,226
- Price
- $5.13
- Value
- $31,970
WINMILL & CO. INC
See "Explanation of Responses"
PurchaseAlert
- Shares
- 5,618
- Price
- $5.16
- Value
- $28,977
WINMILL & CO. INC
See "Explanation of Responses"
PurchaseAlert
- Shares
- 6,226
- Price
- $5.12
- Value
- $31,906
WINMILL & CO. INC
See "Explanation of Responses"
PurchaseAlert
- Shares
- 7,035
- Price
- $5.09
- Value
- $35,838
WINMILL & CO. INC
See "Explanation of Responses"
PurchaseAlert
- Shares
- 6,694
- Price
- $5.03
- Value
- $33,645
WINMILL & CO. INC
See "Explanation of Responses"
PurchaseAlert
- Shares
- 6,055
- Price
- $5.03
- Value
- $30,438
WINMILL & CO. INC
See "Explanation of Responses"
PurchaseAlert
- Shares
- 2,069
- Price
- $4.97
- Value
- $10,283
WINMILL & CO. INC
See "Explanation of Responses"
PurchaseAlert
- Shares
- 4,592
- Price
- $5.48
- Value
- $25,150
WINMILL & CO. INC
See "Explanation of Responses"
PurchaseAlert
- Shares
- 7,209
- Price
- $5.42
- Value
- $39,093
WINMILL & CO. INC
See "Explanation of Responses"
PurchaseAlert
- Shares
- 5,477
- Price
- $5.36
- Value
- $29,345
WINMILL & CO. INC
See "Explanation of Responses"
PurchaseAlert
- Shares
- 7,788
- Price
- $5.26
- Value
- $40,973
BURKE RUSSELL E III
Director
PurchaseAlert
- Shares
- 105
- Price
- $5.25
- Value
- $550.73
WINMILL & CO. INC
See "Explanation of Responses"
PurchaseAlert
- Shares
- 7,823
- Price
- $5.22
- Value
- $40,835
WINMILL & CO. INC
See "Explanation of Responses"
PurchaseAlert
- Shares
- 2,160
- Price
- $5.15
- Value
- $11,122
WINMILL & CO. INC
See "Explanation of Responses"
PurchaseAlert
- Shares
- 502
- Price
- $5.12
- Value
- $2,570
| Date | Insider | Transaction | Shares | Price | Value | Reading |
|---|---|---|---|---|---|---|
| Sep 10, 2026 | WINMILL MARK CAMPBELL President and CEO | Purchase | 292 | $5.16 | $1,507 | |
| Sep 10, 2026 | WINMILL MARK CAMPBELL President and CEO | Purchase | 50 | $5.16 | $258.00 | |
| Sep 09, 2026 | WINMILL MARK CAMPBELL President and CEO | Purchase | 2,058 | $5.16 | $10,619 | |
| Sep 09, 2026 | WINMILL MARK CAMPBELL President and CEO | Purchase | 1,600 | $5.16 | $8,256 | |
| Aug 26, 2026 | WINMILL & CO. INC See "Explanation of Responses" | Purchase | 7,761 | $5.64 | $43,757 | |
| Aug 25, 2026 | WINMILL & CO. INC See "Explanation of Responses" | Purchase | 7,547 | $5.66 | $42,695 | |
| Aug 24, 2026 | WINMILL & CO. INC See "Explanation of Responses" | Purchase | 8,022 | $5.62 | $45,046 | |
| Aug 21, 2026 | WINMILL & CO. INC See "Explanation of Responses" | Purchase | 7,117 | $5.45 | $38,805 | |
| Aug 20, 2026 | WINMILL & CO. INC See "Explanation of Responses" | Purchase | 6,901 | $5.42 | $37,417 | |
| Aug 19, 2026 | WINMILL & CO. INC See "Explanation of Responses" | Purchase | 6,877 | $5.40 | $37,163 | |
| Aug 18, 2026 | WINMILL & CO. INC See "Explanation of Responses" | Purchase | 5,736 | $5.32 | $30,507 | |
| Aug 17, 2026 | WINMILL & CO. INC See "Explanation of Responses" | Purchase | 7,117 | $5.33 | $37,936 | |
| Aug 14, 2026 | WINMILL & CO. INC See "Explanation of Responses" | Purchase | 6,029 | $5.23 | $31,511 | |
| Aug 13, 2026 | BURKE RUSSELL E III Director | Purchase | 1,625 | $5.21 | $8,459 | |
| Aug 13, 2026 | WINMILL & CO. INC See "Explanation of Responses" | Purchase | 5,629 | $5.20 | $29,277 | |
| Aug 12, 2026 | WINMILL & CO. INC See "Explanation of Responses" | Purchase | 6,248 | $5.15 | $32,192 | |
| Aug 11, 2026 | WINMILL & CO. INC See "Explanation of Responses" | Purchase | 5,887 | $5.17 | $30,409 | |
| May 14, 2026 | WINMILL MARK CAMPBELL President and CEO | Purchase | 4,000 | $5.33 | $21,320 | |
| Dec 05, 2025 | WINMILL MARK CAMPBELL President and CEO | Purchase | 3,600 | $5.09 | $18,324 | |
| Dec 05, 2025 | WINMILL MARK CAMPBELL President and CEO | Purchase | 800 | $5.05 | $4,040 | |
| Dec 04, 2025 | WINMILL MARK CAMPBELL President and CEO | Purchase | 6,000 | $5.14 | $30,849 | |
| Dec 03, 2025 | WINMILL MARK CAMPBELL President and CEO | Purchase | 6,000 | $5.13 | $30,770 | |
| Dec 02, 2025 | Klimoski Donald II General Counsel | Purchase | 446 | $5.05 | $2,252 | |
| Dec 01, 2025 | WINMILL & CO. INC See "Explanation of Responses" | Purchase | 3,062 | $5.18 | $15,853 | |
| Nov 28, 2025 | WINMILL & CO. INC See "Explanation of Responses" | Purchase | 3,342 | $5.16 | $17,229 | |
| Nov 26, 2025 | WINMILL & CO. INC See "Explanation of Responses" | Purchase | 4,873 | $5.17 | $25,175 | |
| Nov 25, 2025 | WINMILL & CO. INC See "Explanation of Responses" | Purchase | 4,547 | $5.18 | $23,567 | |
| Nov 24, 2025 | WINMILL & CO. INC See "Explanation of Responses" | Purchase | 4,064 | $5.14 | $20,904 | |
| Nov 21, 2025 | WINMILL & CO. INC See "Explanation of Responses" | Purchase | 6,226 | $5.09 | $31,673 | |
| Nov 20, 2025 | WINMILL & CO. INC See "Explanation of Responses" | Purchase | 5,870 | $5.08 | $29,842 | |
| Nov 19, 2025 | WINMILL & CO. INC See "Explanation of Responses" | Purchase | 6,226 | $5.13 | $31,970 | |
| Nov 18, 2025 | WINMILL & CO. INC See "Explanation of Responses" | Purchase | 5,618 | $5.16 | $28,977 | |
| Nov 17, 2025 | WINMILL & CO. INC See "Explanation of Responses" | Purchase | 6,226 | $5.12 | $31,906 | |
| Nov 14, 2025 | WINMILL & CO. INC See "Explanation of Responses" | Purchase | 7,035 | $5.09 | $35,838 | |
| Nov 13, 2025 | WINMILL & CO. INC See "Explanation of Responses" | Purchase | 6,694 | $5.03 | $33,645 | |
| Nov 12, 2025 | WINMILL & CO. INC See "Explanation of Responses" | Purchase | 6,055 | $5.03 | $30,438 | |
| Nov 11, 2025 | WINMILL & CO. INC See "Explanation of Responses" | Purchase | 2,069 | $4.97 | $10,283 | |
| Aug 29, 2025 | WINMILL & CO. INC See "Explanation of Responses" | Purchase | 4,592 | $5.48 | $25,150 | |
| Aug 28, 2025 | WINMILL & CO. INC See "Explanation of Responses" | Purchase | 7,209 | $5.42 | $39,093 | |
| Aug 27, 2025 | WINMILL & CO. INC See "Explanation of Responses" | Purchase | 5,477 | $5.36 | $29,345 | |
| Aug 26, 2025 | WINMILL & CO. INC See "Explanation of Responses" | Purchase | 7,788 | $5.26 | $40,973 | |
| Aug 25, 2025 | BURKE RUSSELL E III Director | Purchase | 105 | $5.25 | $550.73 | |
| Aug 25, 2025 | WINMILL & CO. INC See "Explanation of Responses" | Purchase | 7,823 | $5.22 | $40,835 | |
| Aug 22, 2025 | WINMILL & CO. INC See "Explanation of Responses" | Purchase | 2,160 | $5.15 | $11,122 | |
| Aug 21, 2025 | WINMILL & CO. INC See "Explanation of Responses" | Purchase | 502 | $5.12 | $2,570 |
“Alert” means a voluntary, unscheduled transaction according to the filing; it is not an investment recommendation. Official source: SEC EDGAR.