GRAN TIERRA ENERGY INC. SEC Filings

GRAN TIERRA ENERGY INC. (GTE) executive Jim Evans, EVP Corporate Services, reported an acquisition of common stock through the Gran Tierra Inc. Employee Stock Purchase Plan. On August 17, 2026 he acquired 142 shares at $9.51 per share, with the purchase price originally in Canadian currency and converted to U.S. dollars. Following this grant or award acquisition, he holds 50,081 shares directly, plus an additional 3,200 shares held indirectly by his spouse.

GRAN TIERRA ENERGY INC. (GTE) reported that executive officer Phillip D. Abraham, EVP, Legal and Land, acquired 253 shares of common stock on August 17, 2026 through the company’s Employee Stock Purchase Plan. The shares were acquired at $9.51 per share, with the purchase price originally in Canadian dollars and converted to U.S. currency. Following this transaction, Abraham directly holds 44,474 common shares. The acquisition was reported as exempt under Rule 16b-3(d) and Rule 16b-3(c).

GRAN TIERRA ENERGY INC. (GTE) reported that President and CEO Gary Guidry acquired 442 shares of common stock on August 17, 2026. The shares were obtained through the Gran Tierra Inc. Employee Stock Purchase Plan in a transaction described as exempt under Rule 16b-3(d) and Rule 16b-3(c). The reported purchase price was $9.51 per share, with the price transacted in Canadian currency and converted to U.S. dollars. Following this acquisition, Guidry’s directly held position is 508,570 shares of common stock.

Gran Tierra Energy Inc. common stock is reported as being beneficially owned by a group of investment entities led by Equinox Partners Investment Management LLC and its principal, Sean M. Fieler. Collectively, these reporting persons beneficially own 3,474,582 Shares of Gran Tierra Energy Inc., representing approximately 9.8% of the outstanding common stock, based on 35,380,429 Shares outstanding as of July 31, 2026. Within this total, Equinox Partners, L.P. holds 1,407,074 Shares (about 4.0% of the class), Kuroto Fund LP holds 359,336 Shares (about 1.0%), and Mason Hill Partners, LP holds 299,625 Shares (about 0.9%). Equinox Partners Investment Management LLC and Mr. Fieler may be deemed to share voting and dispositive power over these holdings through their roles as investment adviser and controlling person, while each disclaims beneficial ownership for other purposes under Section 13 of the Exchange Act.

For Gran Tierra Energy Inc. (GTE), entities affiliated with Equinox Partners reported a series of open-market sales of common shares. On 2026-08-13 and 2026-08-14, the funds and managed accounts sold an aggregate of 674,949 common shares at prices of $9.23 and $9.31 per share. The positions are reported as indirectly owned through Equinox Partners, L.P., Kuroto Fund LP, Mason Hill Partners, LP, and managed accounts. The reporting persons disclose that they may be deemed to beneficially own the securities through these relationships but disclaim beneficial ownership except to the extent of their pecuniary interest. The Rule 10b5-1 trading-plan checkbox was not marked.

Gran Tierra Energy Inc. shareholder group led by Equinox Partners Investment Management LLC filed Amendment No. 4 to Schedule 13D regarding its holdings of Gran Tierra common stock. The reporting persons collectively beneficially own 4,149,531 Shares, representing 11.7% of the outstanding common stock, based on 35,380,429 Shares outstanding as reported in Gran Tierra’s Form 10-Q filed August 5, 2026.

Equinox Partners Investment Management LLC is investment adviser to client accounts that hold a portion of these Shares, and the filing states that all Shares were acquired using approximately $22,163,850.39 of client investment capital, including commissions. Shares may be held in margin accounts and pledged as collateral for debit balances. The reporting persons and Sean M. Fieler expressly disclaim beneficial ownership of Shares they do not directly own, including 43,917 Shares underlying deferred stock units awarded to former director Brad Virbitsky. The filing notes that, other than transactions listed on Schedule 1 or previously reported, there have been no other transactions in the past 60 days.

Equinox Partners Investment Management LLC and related funds reported sales of Gran Tierra Energy Inc. common shares. On August 11 and 12, 2026, entities including Equinox Partners, L.P., Kuroto Fund LP, Mason Hill Partners, LP, and managed accounts indirectly sold an aggregate of 413,887 common shares of Gran Tierra Energy at per-share prices of $9.30 and $9.49. The shares were held by these funds and accounts, and the reporting persons disclaim beneficial ownership beyond their pecuniary interests.

Gran Tierra Energy Inc. is the subject of an amended Schedule 13G filing (Amendment No. 5) by Daniel Lau, Christine Man, LM Asset Management Inc., LM Asset Fund Limited Partnership, and LM Asset General Partner Ltd. These reporting persons state they are filing jointly but each expressly disclaims membership in a group and beneficial ownership beyond their pecuniary interest. Based on 35,380,429 shares of common stock outstanding as of August 5, 2026, Daniel Lau reports beneficial ownership of 4,812,420 shares (13.6%), and Christine Man 4,637,970 shares (13.1%). LM Asset Management Inc. reports 4,365,420 shares (12.3%), the Partnership 2,847,800 shares (8.1%), and the General Partner 3,648,020 shares (10.3%). Voting and dispositive power is split between limited sole power and substantial shared power across these entities, reflecting control relationships among the advisers and funds.

Equinox Partners-managed entities reported open-market sales of 218,053 Gran Tierra Energy common shares on August 7 and 10, 2026, at per-share prices of $9.05–$9.08. The trades were made through funds and managed accounts advised by Equinox Partners Investment Management LLC, which, along with related parties, disclaims beneficial ownership beyond its pecuniary interests.