Every Form 4 that Global Self Storage, Inc. (SELF) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A Form 4 covers the transactions officers, directors and large holders report, so if you follow SELF and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full SELF filings page.
Global Self Storage, Inc. (SELF) reported that its President and CEO, Mark Campbell Winmill, who is also a director, purchased additional shares of the company’s common stock. On September 9 and 10, 2026, he bought a total of 4,000 shares in open-market or private transactions at $5.16 per share. No Rule 10b5-1 trading plan is reported for these purchases.
Global Self Storage, Inc. (SELF) reported that Winmill & Co. Inc., which may be deemed an affiliate, purchased a total of 15,308 shares of common stock in open-market or private transactions. The purchases occurred on 2026-08-25 and 2026-08-26 at prices around $5.64–$5.66 per share. The filing notes that members of the Winmill family and the Winmill Family Trust may be deemed to have indirect beneficial ownership but each disclaims beneficial ownership of these shares.
Global Self Storage, Inc. (SELF) reported an increase in insider-related ownership through WINMILL & CO. INC, which may be deemed an affiliate of the company. WINMILL & CO. INC purchased a total of 15,139 shares of common stock in open-market or private transactions on August 21 and August 24, 2026.
Global Self Storage, Inc. (SELF) reported that Winmill & Co. Inc., which may be deemed an affiliate of the company, purchased shares of its Common Stock in the open market. Winmill & Co. bought 6,877 shares at $5.4039 per share on 2026-08-19 and 6,901 shares at $5.4219 per share on 2026-08-20, for a total of 13,778 shares. The Winmill Family Trust controls Winmill & Co., and its trustees disclaim beneficial ownership of these shares.
Global Self Storage, Inc. (SELF) had insider activity reported by Winmill & Co. Inc., which may be deemed an affiliate of the company. Winmill & Co. Inc. purchased a total of 12,853 shares of Global Self Storage common stock in open-market transactions on two consecutive days.
The reporting person bought 7,117 shares at $5.3303 per share on August 17, 2026, and 5,736 shares at $5.3185 per share on August 18, 2026. The Winmill Family Trust owns all voting stock of the reporting person, and its trustees may be deemed to have indirect beneficial ownership but disclaim beneficial ownership of these shares. The trades were not made under a Rule 10b5-1 plan.
Global Self Storage, Inc. director Russell E. Burke III purchased additional common stock in an open market or private transaction. On August 13, 2026, he bought 1,625 shares at an average price of $5.2055 per share, increasing his directly held position to 40,002 shares.
Global Self Storage, Inc. reported that Winmill & Co. Inc., which may be deemed an affiliate, purchased shares of the company’s common stock in the open market. The entity bought 11,658 shares over two days at prices around $5.21–$5.23 per share. The Winmill Family Trust controls Winmill & Co. Inc. and related individuals disclaim beneficial ownership of these shares.
Zachary William Chester reported acquisition or exercise transactions in this Form 4 filing.
Global Self Storage, Inc. director Zachary William Chester received an equity compensation grant of 196 shares of Common Stock on 2026-08-11 as director fees in lieu of cash at $5.10 per share. The shares are fully vested, and Chester has dividend and voting rights on them. Following this grant, he directly holds 18,296 shares of the company’s common stock.
BURKE RUSSELL E III reported acquisition or exercise transactions in this Form 4 filing.
Global Self Storage, Inc. director Russell E. Burke III reported a grant of 196 shares of common stock on 2026-08-11, valued at $5.10 per share. These shares were issued as compensation for director fees in lieu of cash, are fully vested, and carry full dividend and voting rights. Following this award, Burke directly holds 38,377 shares of Global Self Storage common stock.
Winmill & Co. Inc., which may be deemed an affiliate of Global Self Storage, Inc., reported open-market purchases of the company’s common stock. It bought 6,248 shares at $5.1524 per share on August 12, 2026 and 5,887 shares at $5.1655 per share on August 11, 2026, for total reported purchases of 12,135 shares. The Winmill Family Trust owns all of Winmill & Co. Inc.’s voting stock, and related individuals and the trust disclaim beneficial ownership of these shares.
Global Self Storage, Inc. director and President & CEO Mark Campbell Winmill bought 4,000 shares of Common Stock in an open-market purchase at $5.33 per share. Following this transaction, he directly owns 368,582.289 shares of the company’s common stock.
BURKE RUSSELL E III reported acquisition or exercise transactions in this Form 4 filing.
Global Self Storage, Inc. director Russell E. Burke III received a grant of 94 shares of common stock as compensation for director fees in lieu of cash, at a value of $5.31 per share. These shares are fully vested, carry dividend and voting rights, and increase his direct holdings to 38,181 shares.
Zachary William Chester reported acquisition or exercise transactions in this Form 4 filing.
Global Self Storage, Inc. director Zachary William Chester received 94 shares of common stock as a stock grant valued at $5.31 per share. This award was paid as compensation for director fees instead of cash and is fully vested. After this grant, he directly holds 18,100 common shares with dividend and voting rights on all of them.
BURKE RUSSELL E III reported acquisition or exercise transactions in this Form 4 filing.
Global Self Storage, Inc. director Russell E. Burke III received 2,739 shares of Common Stock as compensation. The shares were granted on March 31, 2026 in lieu of cash director fees at a reference price of $5.11 per share and are fully vested.
After this award, Burke directly holds 38,087 Common Stock shares. According to the disclosure, he has dividend and voting rights on all of these shares, reflecting a straightforward equity-based compensation grant rather than an open-market purchase or sale.
Zachary William Chester reported acquisition or exercise transactions in this Form 4 filing.
Global Self Storage, Inc. director Zachary William Chester received 2,739 shares of Common Stock as compensation. The shares were granted on March 31, 2026 at a stated value of $5.11 per share as director fees in lieu of cash and are fully vested. After this award, he directly holds 18,006 shares with full dividend and voting rights on all of them.
Kamerman Russell reported acquisition or exercise transactions in this Form 4 filing.
Global Self Storage, Inc. reported that Assistant General Counsel Russell Kamerman received a grant of 500 shares of common stock at $5.10 per share as equity compensation. The award vests 6.25% each quarter beginning in 2026 over four years, and Kamerman now holds 5,925 shares directly with voting and dividend rights on all granted shares, including those not yet vested.
Klimoski Donald II reported acquisition or exercise transactions in this Form 4 filing.
Global Self Storage, Inc. General Counsel Donald Klimoski II received two equity awards totaling 11,054 shares of common stock on March 24, 2026, at prices of $5.08 and $5.10 per share. These shares are tied to achieving 2025 and 2026 performance targets and will vest 6.25% quarterly over four years, retroactive from each respective year. Klimoski has voting and dividend rights on all awarded shares, including unvested portions, and now directly holds 97,554 common shares.
OMalley Thomas reported acquisition or exercise transactions in this Form 4 filing.
Global Self Storage, Inc. reported that Chief Financial Officer Thomas O’Malley received two stock awards of the company’s common stock as equity compensation. On this date, he was granted 5,527 shares tied to achieving certain 2025 performance targets at a reference price of $5.08 per share and another 5,527 shares tied to 2026 performance targets at $5.10 per share. These shares will vest 6.25% each quarter over four years, retroactive from the respective performance year, but O’Malley already holds full voting and dividend rights on all awarded shares, including unvested amounts. Following these awards, his direct holdings increased to 91,694 common shares.
Global Self Storage, Inc. reported that President and CEO Mark Campbell Winmill received two stock awards of Common Stock, each for 12,672 shares, on March 24, 2026. These are classified as grant or award acquisitions rather than open-market purchases.
One grant was earned based on achieving certain 2025 performance targets and will vest 6.25% quarterly over four years, applied retroactively from 2025. The second grant will be earned based on 2026 performance targets and will also vest 6.25% quarterly over four years, retroactive from 2026. Winmill has voting and dividend rights on all awarded shares, including unvested shares, and his direct holdings after these awards total 364,582.289 shares of Common Stock.
Global Self Storage, Inc. (SELF) reported insider share purchases by an affiliated reporting person. On 11/25/2025, the insider bought 4,547 shares of common stock at $5.1829 per share, bringing beneficial ownership to 136,364 shares held directly. On 11/26/2025, the insider bought an additional 4,873 shares at $5.1662 per share, increasing beneficial ownership to 141,237 shares held directly.
The remarks explain that the reporting person may be deemed an affiliate of the company and that the Winmill Family Trust owns all of the voting stock of the reporting person. Several trustees of the Winmill Family Trust may be deemed to have indirect beneficial ownership but each disclaims such beneficial ownership.
Global Self Storage, Inc. (SELF) reported insider share purchases by Winmill & Co. Incorporated on Form 4. The reporting person bought 6,226 shares of common stock on 11/21/2025 at $5.0872 per share and 4,064 shares on 11/24/2025 at $5.1437 per share, both coded as open market purchases. After these transactions, the reporting person directly beneficially owned 131,817 shares of Global Self Storage common stock. The filing notes that the reporting person may be deemed an affiliate of the issuer and that the Winmill Family Trust and its trustees disclaim beneficial ownership of these shares.
Global Self Storage, Inc. (SELF) reported an insider share purchase by an affiliate. A Form 4 shows that on 11/19/2025 the reporting person purchased 6,226 shares of common stock at $5.1349 per share, and on 11/20/2025 purchased an additional 5,870 shares at $5.0838 per share, both coded as open-market or private purchases. Following these transactions, the reporting person beneficially owns 121,527 shares directly.
The remarks explain that the reporting person may be deemed an affiliate of the company because the Winmill Family Trust owns all of its voting stock. Several trustees of the Winmill Family Trust may be deemed to have indirect beneficial ownership of these shares, but each of them and the trust disclaim beneficial ownership.
Global Self Storage, Inc. (SELF) reported an insider ownership change by Winmill & Co. Incorporated. Winmill & Co. purchased 6,226 shares of common stock on 11/17/2025 at $5.1246 per share and 5,618 shares on 11/18/2025 at $5.1578 per share in open-market transactions coded as purchases. Following these trades, Winmill & Co. directly owns 109,431 shares of Global Self Storage common stock. The remarks note that Winmill & Co. may be deemed an affiliate of the company and that the Winmill Family Trust, whose trustees include Thomas B., Mark C., William, and Woodworth Winmill, may be deemed to have indirect beneficial ownership, although each party disclaims beneficial ownership of these shares.
Global Self Storage, Inc. (SELF) reported a routine insider transaction by a company director. On 11/13/2025, the director received 248 shares of common stock at a price of $5.03 per share. These shares were issued as compensation for director fees in lieu of cash and are fully vested, meaning the director has full ownership from the grant date. Following this award, the director beneficially owns 35,348 shares of Global Self Storage common stock, held directly.
Global Self Storage, Inc. (SELF) reported a Form 4 showing a director receiving company stock as compensation. On 11/13/2025, the reporting person acquired 2,584 shares of common stock at $5.03 per share as fully vested director fee compensation in lieu of cash. After this transaction, the director beneficially owns 15,267 shares, held directly, and has dividend and voting rights on all of these shares.
Global Self Storage (SELF) reported insider share purchases by Winmill & Co. Incorporated on a Form 4. The reporting person bought 6,694 shares at $5.0262 on 11/13/2025 and 7,035 shares at $5.0943 on 11/14/2025. Following these trades, the reporting person beneficially owned 97,587 shares, held directly.
Remarks note the reporting person may be deemed an affiliate. The Winmill Family Trust owns all voting stock of the reporting person, and its trustees may be deemed to have indirect beneficial ownership; each disclaims beneficial ownership.