Gilson Michelle, Chief Financial Officer of Arcellx, Inc. ($ACLX), sold shares on the open market eleven times over the last 365 days, totaling $4.42 million. Her most recent sale occurred on February 25, 2026. These sales rank 2,111th among 11,678 individual insiders, compared to an average of $8.59 million per seller and 6.37 transactions. She made 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 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | G | Common Stock | 5000 | $0.00 | 28,938.0000 | 57,822,871 | 14.73% | 0.01% |
| Jan. 6, 2026 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | M | Common Stock | 20530 | $0.00 | 64,832.0000 | 57,822,871 | 46.34% | 0.04% |
| Feb. 25, 2026 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | S | Common Stock | 11219 | $113.82 | 33,938.0000 | 57,822,871 | 24.84% | 0.02% |
| Feb. 19, 2026 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | S | Common Stock | 100 | $69.38 | 45,157.0000 | 57,822,871 | 0.22% | 0.00% |
| Feb. 19, 2026 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | S | Common Stock | 5405 | $68.57 | 45,257.0000 | 57,822,871 | 10.67% | 0.01% |
| Jan. 3, 2026 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | M | Common Stock | 15340 | $0.00 | 44,302.0000 | 57,822,871 | 52.97% | 0.03% |
| Feb. 19, 2026 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | S | Common Stock | 2879 | $67.73 | 50,662.0000 | 57,822,871 | 5.38% | 0.00% |
| Jan. 2, 2026 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | M | Common Stock | 20496 | $0.00 | 28,962.0000 | 57,822,871 | 242.10% | 0.04% |
| Feb. 17, 2026 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | S | Common Stock | 4150 | $70.01 | 53,541.0000 | 57,822,871 | 7.19% | 0.01% |
| Feb. 17, 2026 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | S | Common Stock | 7141 | $69.21 | 57,691.0000 | 57,822,871 | 11.01% | 0.01% |
| Jan. 6, 2026 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | M | Common Stock | 20530 | $0.00 | 64,832.0000 | 57,822,871 | 46.34% | 0.04% |
| Jan. 2, 2026 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | M | Common Stock | 20496 | $0.00 | 28,962.0000 | 57,822,871 | 242.10% | 0.04% |
| Jan. 2, 2026 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | A | Restricted Stock Unit | 88542 | $0.00 | 88,542.0000 | 57,822,871 | 9999.99% | 0.15% |
| Jan. 6, 2026 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | M | Restricted Stock Unit | 20530 | $0.00 | 61,590.0000 | 57,822,871 | 25.00% | 0.04% |
| Jan. 3, 2026 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | M | Restricted Stock Unit | 15340 | $0.00 | 0.0000 | 57,822,871 | 100.00% | 0.03% |
| Jan. 2, 2026 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | M | Restricted Stock Unit | 20496 | $0.00 | 20,496.0000 | 57,822,871 | 50.00% | 0.04% |
| Jan. 3, 2026 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | M | Common Stock | 15340 | $0.00 | 44,302.0000 | 57,822,871 | 52.97% | 0.03% |
| Oct. 15, 2025 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | S | Common Stock | 5364 | $91.04 | 8,466.0000 | 54,944,012 | 38.79% | 0.01% |
| Oct. 6, 2025 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | S | Common Stock | 1064 | $86.22 | 13,830.0000 | 54,944,012 | 7.14% | 0.00% |
| Oct. 3, 2025 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | S | Common Stock | 4882 | $86.00 | 14,894.0000 | 54,944,012 | 24.69% | 0.01% |
| May 23, 2025 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | M | Restricted Stock Units | 22429 | $0.00 | 0.0000 | 54,944,012 | 100.00% | 0.04% |
| May 23, 2025 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | M | Common Stock | 22429 | $0.00 | 32,011.0000 | 54,944,012 | 234.07% | 0.04% |
| May 27, 2025 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | S | Common Stock | 8449 | $64.38 | 19,776.0000 | 54,944,012 | 29.93% | 0.02% |
| May 27, 2025 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | S | Common Stock | 3786 | $63.62 | 28,225.0000 | 54,944,012 | 11.83% | 0.01% |
| Jan. 7, 2025 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | S | Common Stock | 4760 | $75.53 | 13,579.0000 | 0 | 25.96% | 0.00% |
| Jan. 3, 2025 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | M | Common Stock | 15339 | $0.00 | 38,834.0000 | 0 | 65.29% | 0.00% |
| Jan. 7, 2025 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | S | Common Stock | 3128 | $74.43 | 24,463.0000 | 0 | 11.34% | 0.00% |
| Jan. 7, 2025 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | S | Common Stock | 1546 | $75.23 | 22,917.0000 | 0 | 6.32% | 0.00% |
| Jan. 7, 2025 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | S | Common Stock | 2251 | $76.64 | 20,666.0000 | 0 | 9.82% | 0.00% |
| Jan. 7, 2025 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | S | Common Stock | 2327 | $77.06 | 18,339.0000 | 0 | 11.26% | 0.00% |
| Jan. 8, 2025 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | S | Common Stock | 3997 | $73.69 | 9,582.0000 | 0 | 29.44% | 0.00% |
| Jan. 3, 2025 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | M | Restricted Stock Unit | 15339 | $0.00 | 15,340.0000 | 0 | 50.00% | 0.00% |
| Jan. 2, 2025 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | M | Common Stock | 20495 | $0.00 | 23,495.0000 | 0 | 683.17% | 0.00% |
| Jan. 3, 2025 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | S | Common Stock | 5622 | $79.55 | 33,212.0000 | 0 | 14.48% | 0.00% |
| Jan. 6, 2025 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | S | Common Stock | 5621 | $77.17 | 27,591.0000 | 0 | 16.92% | 0.00% |
| Jan. 2, 2025 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | M | Restricted Stock Units | 20495 | $0.00 | 40,992.0000 | 0 | 33.33% | 0.00% |
| Jan. 2, 2025 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | M | Common Stock | 20495 | $0.00 | 23,495.0000 | 0 | 683.17% | 0.00% |
| Jan. 6, 2025 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | A | Restricted Stock Unit | 82120 | $0.00 | 82,120.0000 | 0 | 9999.99% | 0.00% |
| Jan. 3, 2025 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | M | Restricted Stock Unit | 15339 | $0.00 | 15,340.0000 | 0 | 50.00% | 0.00% |
| Jan. 2, 2025 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | M | Restricted Stock Unit | 20495 | $0.00 | 40,992.0000 | 0 | 33.33% | 0.00% |
| Jan. 6, 2025 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | S | Common Stock | 5102 | $77.17 | 28,230.0000 | 0 | 15.31% | 0.00% |
| Jan. 3, 2025 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | S | Common Stock | 5502 | $79.55 | 33,332.0000 | 0 | 14.17% | 0.00% |
| Jan. 3, 2025 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | M | Common Stock | 15339 | $0.00 | 38,834.0000 | 0 | 65.29% | 0.00% |
| Nov. 19, 2024 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | M | Common Stock | 3000 | $8.66 | 3,000.0000 | 0 | 9999.99% | 0.00% |
| Nov. 15, 2024 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | S | Common Stock | 1061 | $87.89 | 700.0000 | 0 | 60.25% | 0.00% |
| Nov. 15, 2024 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | S | Common Stock | 500 | $89.17 | 200.0000 | 0 | 71.43% | 0.00% |
| Nov. 15, 2024 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | S | Common Stock | 100 | $91.67 | 100.0000 | 0 | 50.00% | 0.00% |
| Nov. 15, 2024 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | S | Common Stock | 100 | $95.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Nov. 19, 2024 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | M | Stock Option (right to buy) | 3000 | $0.00 | 78,315.0000 | 0 | 3.69% | 0.00% |
| Nov. 8, 2024 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | S | Common Stock | 801 | $102.33 | 1,761.0000 | 0 | 31.26% | 0.00% |
| Nov. 8, 2024 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | M | Common Stock | 7200 | $8.66 | 14,115.0000 | 0 | 104.12% | 0.00% |
| Nov. 8, 2024 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | S | Common Stock | 9700 | $100.26 | 4,415.0000 | 0 | 68.72% | 0.00% |
| Nov. 8, 2024 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | S | Common Stock | 1853 | $101.27 | 2,562.0000 | 0 | 41.97% | 0.00% |
| Nov. 8, 2024 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | M | Stock Option (right to buy) | 7200 | $0.00 | 81,315.0000 | 0 | 8.13% | 0.00% |
| Sept. 17, 2024 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | S | Common Stock | 8726 | $77.88 | 6,915.0000 | 0 | 55.79% | 0.00% |
| Sept. 17, 2024 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | M | Stock Option (right to buy) | 15000 | $0.00 | 88,515.0000 | 0 | 14.49% | 0.00% |
| Sept. 17, 2024 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | S | Common Stock | 6274 | $77.51 | 15,641.0000 | 0 | 28.63% | 0.00% |
| Sept. 17, 2024 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | M | Common Stock | 15000 | $8.66 | 21,915.0000 | 0 | 216.92% | 0.00% |
| June 26, 2024 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | S | Common Stock | 551 | $54.25 | 6,915.0000 | 0 | 7.38% | 0.00% |
| June 26, 2024 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | S | Common Stock | 12326 | $53.68 | 7,466.0000 | 0 | 62.28% | 0.00% |
| May 23, 2024 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | M | Restricted Stock Units | 22428 | $0.00 | 22,429.0000 | 0 | 50.00% | 0.00% |
| May 24, 2024 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | S | Common Stock | 12121 | $50.71 | 19,792.0000 | 0 | 37.98% | 0.00% |
| May 23, 2024 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | M | Common Stock | 22428 | $0.00 | 31,913.0000 | 0 | 236.46% | 0.00% |
| March 18, 2024 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | S | Common Stock | 3043 | $69.73 | 9,485.0000 | 0 | 24.29% | 0.00% |
| March 18, 2024 | Arcellx, Inc. | $ACLX | Gilson Michelle | CHIEF FINANCIAL OFFICER | S | Common Stock | 3782 | $69.03 | 12,528.0000 | 0 | 23.19% | 0.00% |
| Jan. 4, 2024 | Arcellx, Inc. | $ACLX | Gilson Michelle | Chief Financial Officer | S | Common Stock | 8514 | $55.27 | 16,310.0000 | 0 | 34.30% | 0.00% |
| Jan. 3, 2023 | Arcellx, Inc. | $ACLX | Gilson Michelle | Chief Financial Officer | M | Common Stock | 15339 | $0.00 | 24,824.0000 | 0 | 161.72% | 0.00% |
| Jan. 3, 2024 | Arcellx, Inc. | $ACLX | Gilson Michelle | Chief Financial Officer | M | Restricted Stock Unit | 15339 | $0.00 | 30,679.0000 | 0 | 33.33% | 0.00% |
| Jan. 2, 2024 | Arcellx, Inc. | $ACLX | Gilson Michelle | Chief Financial Officer | A | Restricted Stock Unit | 61487 | $0.00 | 61,487.0000 | 0 | 9999.99% | 0.00% |
| Jan. 2, 2024 | Arcellx, Inc. | $ACLX | Gilson Michelle | Chief Financial Officer | A | Stock Option (right to buy) | 94596 | $0.00 | 94,596.0000 | 0 | 9999.99% | 0.00% |
| May 24, 2023 | Arcellx, Inc. | $ACLX | Gilson Michelle | Chief Financial Officer | S | Common Stock | 150 | $41.64 | 15,485.0000 | 0 | 0.96% | 0.00% |
| May 23, 2023 | Arcellx, Inc. | $ACLX | Gilson Michelle | Chief Financial Officer | M | Common Stock | 22428 | $0.00 | 24,189.0000 | 0 | 1273.60% | 0.00% |
| May 25, 2023 | Arcellx, Inc. | $ACLX | Gilson Michelle | Chief Financial Officer | S | Common Stock | 6000 | $42.77 | 9,485.0000 | 0 | 38.75% | 0.00% |
| May 23, 2023 | Arcellx, Inc. | $ACLX | Gilson Michelle | Chief Financial Officer | M | Restricted Stock Units | 22428 | $0.00 | 44,857.0000 | 0 | 33.33% | 0.00% |
| May 24, 2023 | Arcellx, Inc. | $ACLX | Gilson Michelle | Chief Financial Officer | S | Common Stock | 8554 | $42.47 | 15,635.0000 | 0 | 35.36% | 0.00% |
| Jan. 3, 2023 | Arcellx, Inc. | $ACLX | Gilson Michelle | Chief Financial Officer | A | Stock Option (right to buy) | 70796 | $0.00 | 70,796.0000 | 0 | 9999.99% | 0.00% |
| Jan. 3, 2023 | Arcellx, Inc. | $ACLX | Gilson Michelle | Chief Financial Officer | A | Restricted Stock Unit | 46018 | $0.00 | 46,018.0000 | 0 | 9999.99% | 0.00% |