Maureen A. Gillan-Myer, EVP, Chief Admin and HR Officer at Community Financial System Inc. ($CBU), made one open market sale of common shares in the last 365 days, totaling about $203 thousand. Her most recent sale occurred on December 29, 2025. This places her 8,373rd out of 11,678 individual insiders by sale value, compared to an average of 8.6 million per insider across roughly 6 transactions. She had no open market purchases in this period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 17, 2026 | COMMUNITY FINANCIAL SYSTEM, INC. | $CBU | Gillan-Myer Maureen A | EVP, Chief Admin & HR Officer | A | Restricted Stock Units | 1275 | $0.00 | 1,275.0000 | 52,821,000 | 9999.99% | 0.00% |
| March 17, 2026 | COMMUNITY FINANCIAL SYSTEM, INC. | $CBU | Gillan-Myer Maureen A | EVP, Chief Admin & HR Officer | A | Stock Option | 4871 | $0.00 | 4,871.0000 | 52,821,000 | 9999.99% | 0.01% |
| March 4, 2026 | COMMUNITY FINANCIAL SYSTEM, INC. | $CBU | Gillan-Myer Maureen A | EVP, Chief Admin & HR Officer | F | Common Stock | 943 | $59.87 | 6,822.8350 | 52,821,000 | 12.14% | 0.00% |
| March 4, 2026 | COMMUNITY FINANCIAL SYSTEM, INC. | $CBU | Gillan-Myer Maureen A | EVP, Chief Admin & HR Officer | A | Common Stock | 2562 | $0.00 | 7,765.8978 | 52,821,000 | 49.23% | 0.00% |
| Dec. 29, 2025 | COMMUNITY FINANCIAL SYSTEM, INC. | $CBU | Gillan-Myer Maureen A | EVP, Chief Admin & HR Officer | S | Common Stock | 3450 | $58.85 | 5,550.0000 | 52,804,000 | 38.34% | 0.01% |
| March 2, 2026 | COMMUNITY FINANCIAL SYSTEM, INC. | $CBU | Gillan-Myer Maureen A | EVP, Chief Admin & HR Officer | F | Common Stock | 522 | $60.55 | 5,203.8350 | 52,821,000 | 9.12% | 0.00% |
| March 18, 2025 | COMMUNITY FINANCIAL SYSTEM, INC. | $CBU | Gillan-Myer Maureen A | EVP, Chief Admin & HR Officer | A | Common Stock | 1233 | $0.00 | 8,311.8681 | 52,883,000 | 17.42% | 0.00% |
| March 18, 2025 | COMMUNITY FINANCIAL SYSTEM, INC. | $CBU | Gillan-Myer Maureen A | EVP, Chief Admin & HR Officer | A | Stock Option | 4553 | $0.00 | 4,553.0000 | 52,883,000 | 9999.99% | 0.01% |
| March 18, 2025 | COMMUNITY FINANCIAL SYSTEM, INC. | $CBU | Gillan-Myer Maureen A | EVP, Chief Admin & HR Officer | A | Common Stock | 4553 | $0.00 | 11,631.8681 | 52,883,000 | 64.32% | 0.01% |
| March 18, 2025 | COMMUNITY FINANCIAL SYSTEM, INC. | $CBU | Gillan-Myer Maureen A | EVP, Chief Admin & HR Officer | A | Stock Option | 1233 | $0.00 | 1,233.0000 | 52,883,000 | 9999.99% | 0.00% |
| March 12, 2025 | COMMUNITY FINANCIAL SYSTEM, INC. | $CBU | Gillan-Myer Maureen A | EVP, Chief Admin & HR Officer | F | Common Stock | 532 | $0.00 | 7,005.0305 | 52,883,000 | 7.06% | 0.00% |
| March 7, 2025 | COMMUNITY FINANCIAL SYSTEM, INC. | $CBU | Gillan-Myer Maureen A | EVP, Chief Admin & HR Officer | A | Common Stock | 1472 | $0.00 | 7,537.2104 | 52,883,000 | 24.27% | 0.00% |
| March 3, 2025 | COMMUNITY FINANCIAL SYSTEM, INC. | $CBU | Gillan-Myer Maureen A | EVP, Chief Admin & HR Officer | F | Common Stock | 444 | $63.29 | 6,065.0305 | 52,883,000 | 6.82% | 0.00% |
| Oct. 1, 2024 | COMMUNITY FINANCIAL SYSTEM, INC. | $CBU | Gillan-Myer Maureen A | EVP, Chief Human Resources Off | F | Common Stock | 177 | $58.07 | 5,995.4917 | 52,680,000 | 2.87% | 0.00% |
| March 19, 2024 | COMMUNITY FINANCIAL SYSTEM, INC. | $CBU | Gillan-Myer Maureen A | EVP, Chief Human Resources Off | A | Common Stock | 1391 | $0.00 | 5,828.2027 | 53,725,000 | 31.35% | 0.00% |
| March 19, 2024 | COMMUNITY FINANCIAL SYSTEM, INC. | $CBU | Gillan-Myer Maureen A | EVP, Chief Human Resources Off | A | Stock Option | 4987 | $0.00 | 4,987.0000 | 53,725,000 | 9999.99% | 0.01% |
| March 1, 2024 | COMMUNITY FINANCIAL SYSTEM, INC. | $CBU | Gillan-Myer Maureen A | EVP, Chief Human Resources Off | F | Common Stock | 218 | $45.30 | 4,260.3015 | 53,725,000 | 4.87% | 0.00% |
| Oct. 1, 2023 | COMMUNITY FINANCIAL SYSTEM, INC. | $CBU | Gillan-Myer Maureen A | EVP, Chief Human Resources Off | F | Common Stock | 176 | $42.21 | 3,926.9606 | 53,606,000 | 4.29% | 0.00% |
| March 14, 2023 | COMMUNITY FINANCIAL SYSTEM, INC. | $CBU | Gillan-Myer Maureen A | EVP, Chief Human Resources Off | A | Stock Option | 4199 | $0.00 | 4,199.0000 | 54,208,000 | 9999.99% | 0.01% |
| March 14, 2023 | COMMUNITY FINANCIAL SYSTEM, INC. | $CBU | Gillan-Myer Maureen A | EVP, Chief Human Resources Off | A | Common Stock | 1152 | $0.00 | 3,806.6313 | 54,208,000 | 43.40% | 0.00% |
| March 15, 2022 | COMMUNITY FINANCIAL SYSTEM, INC. | $CBU | Gillan-Myer Maureen A | EVP, Chief Human Resources Off | A | Stock Option | 2676 | $0.00 | 2,676.0000 | 54,400,000 | 9999.99% | 0.00% |
| March 8, 2023 | COMMUNITY FINANCIAL SYSTEM, INC. | $CBU | Gillan-Myer Maureen A | EVP, Chief Human Resources Off | F | Common Stock | 81 | $61.05 | 2,654.6313 | 54,208,000 | 2.96% | 0.00% |