Johnston John Joseph has filed 78 insider transactions across 1 company since June 2023.
Most recent transaction: a grant/award of 29210 shares of MAXCYTE, INC. ($MXCT) on June 18, 2025.
Activity breakdown: 0 open-market purchases and 21 sales.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| June 18, 2025 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | A | Common Stock | 29210 | $0.00 | 171,160.0000 | 105,950,480 | 20.58% | 0.03% |
| June 18, 2025 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | A | Stock Option (right to buy) | 50790 | $0.00 | 50,790.0000 | 105,950,480 | 9999.99% | 0.05% |
| Jan. 27, 2025 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | M | Common Stock | 3000 | $2.93 | 144,950.0000 | 104,849,222 | 2.11% | 0.00% |
| Jan. 27, 2025 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | S | Common Stock | 3000 | $4.65 | 141,950.0000 | 104,849,222 | 2.07% | 0.00% |
| Jan. 27, 2025 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | M | Stock Option (right to buy) | 3000 | $0.00 | 17,417.0000 | 104,849,222 | 14.69% | 0.00% |
| Dec. 26, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | M | Common Stock | 3000 | $2.93 | 144,950.0000 | 105,109,603 | 2.11% | 0.00% |
| Dec. 26, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | S | Common Stock | 3000 | $4.01 | 141,950.0000 | 105,109,603 | 2.07% | 0.00% |
| Dec. 26, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | M | Stock Option (right to buy) | 3000 | $0.00 | 20,417.0000 | 105,109,603 | 12.81% | 0.00% |
| Dec. 6, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | M | Common Stock | 505 | $2.93 | 142,455.0000 | 105,109,603 | 0.36% | 0.00% |
| Dec. 6, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | S | Common Stock | 505 | $3.70 | 141,950.0000 | 105,109,603 | 0.35% | 0.00% |
| Dec. 9, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | M | Common Stock | 891 | $2.93 | 142,841.0000 | 105,109,603 | 0.63% | 0.00% |
| Dec. 9, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | M | Common Stock | 1121 | $1.64 | 143,962.0000 | 105,109,603 | 0.78% | 0.00% |
| Dec. 9, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | M | Common Stock | 483 | $2.93 | 144,445.0000 | 105,109,603 | 0.34% | 0.00% |
| Dec. 9, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | S | Common Stock | 2495 | $3.79 | 141,950.0000 | 105,109,603 | 1.73% | 0.00% |
| Dec. 6, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | M | Stock Option (right to buy) | 505 | $0.00 | 891.0000 | 105,109,603 | 36.17% | 0.00% |
| Dec. 9, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | M | Stock Option (right to buy) | 891 | $0.00 | 0.0000 | 105,109,603 | 100.00% | 0.00% |
| Dec. 9, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | M | Stock Option (right to buy) | 1121 | $0.00 | 0.0000 | 105,109,603 | 100.00% | 0.00% |
| Dec. 9, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | M | Stock Option (right to buy) | 483 | $0.00 | 23,417.0000 | 105,109,603 | 2.02% | 0.00% |
| Oct. 28, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | M | Common Stock | 3000 | $2.93 | 144,950.0000 | 105,109,603 | 2.11% | 0.00% |
| Oct. 28, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | S | Common Stock | 3000 | $3.72 | 141,950.0000 | 105,109,603 | 2.07% | 0.00% |
| Oct. 28, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | M | Stock Option (right to buy) | 3000 | $0.00 | 1,396.0000 | 105,109,603 | 68.24% | 0.00% |
| Sept. 26, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | M | Common Stock | 3000 | $2.93 | 144,950.0000 | 104,639,239 | 2.11% | 0.00% |
| Sept. 26, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | S | Common Stock | 3000 | $3.82 | 141,950.0000 | 104,639,239 | 2.07% | 0.00% |
| Sept. 26, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | M | Stock Option (right to buy) | 3000 | $0.00 | 4,396.0000 | 104,639,239 | 40.56% | 0.00% |
| Aug. 26, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | M | Common Stock | 3000 | $2.93 | 144,950.0000 | 104,639,239 | 2.11% | 0.00% |
| Aug. 26, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | S | Common Stock | 3000 | $4.28 | 141,950.0000 | 104,639,239 | 2.07% | 0.00% |
| Aug. 26, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | M | Stock Option (right to buy) | 3000 | $0.00 | 7,396.0000 | 104,639,239 | 28.86% | 0.00% |
| July 26, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | M | Common Stock | 3000 | $2.93 | 144,950.0000 | 104,639,239 | 2.11% | 0.00% |
| July 26, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | S | Common Stock | 3000 | $4.75 | 141,950.0000 | 104,639,239 | 2.07% | 0.00% |
| July 26, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | M | Stock Option (right to buy) | 3000 | $0.00 | 10,396.0000 | 104,639,239 | 22.39% | 0.00% |
| June 27, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | M | Common Stock | 5044 | $1.64 | 146,994.0000 | 104,089,758 | 3.55% | 0.00% |
| June 27, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | M | Common Stock | 4956 | $2.93 | 151,950.0000 | 104,089,758 | 3.37% | 0.00% |
| June 27, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | S | Common Stock | 10000 | $3.99 | 141,950.0000 | 104,089,758 | 6.58% | 0.01% |
| June 27, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | M | Stock Option (right to buy) | 5044 | $0.00 | 1,121.0000 | 104,089,758 | 81.82% | 0.00% |
| June 27, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | M | Stock Option (right to buy) | 4956 | $0.00 | 13,396.0000 | 104,089,758 | 27.01% | 0.00% |
| June 11, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | A | Common Stock | 21367 | $0.00 | 141,950.0000 | 104,089,758 | 17.72% | 0.02% |
| June 11, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | A | Stock Option (right to buy) | 40701 | $0.00 | 40,701.0000 | 104,089,758 | 9999.99% | 0.04% |
| March 26, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | M | Common Stock | 5000 | $2.14 | 125,583.0000 | 103,268,502 | 4.15% | 0.00% |
| March 26, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | S | Common Stock | 5000 | $4.41 | 120,583.0000 | 103,268,502 | 3.98% | 0.00% |
| March 26, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | M | Stock Option (right to buy) | 5000 | $0.00 | 617.0000 | 103,268,502 | 89.02% | 0.00% |
| Feb. 26, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | M | Common Stock | 5000 | $2.14 | 125,583.0000 | 103,268,502 | 4.15% | 0.00% |
| Feb. 26, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | S | Common Stock | 5000 | $4.60 | 120,583.0000 | 103,268,502 | 3.98% | 0.00% |
| Feb. 26, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | M | Stock Option (right to buy) | 5000 | $0.00 | 5,617.0000 | 103,268,502 | 47.09% | 0.00% |
| Jan. 26, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | M | Common Stock | 5000 | $2.14 | 125,583.0000 | 103,268,502 | 4.15% | 0.00% |
| Jan. 26, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | S | Common Stock | 5000 | $5.12 | 120,583.0000 | 103,268,502 | 3.98% | 0.00% |
| Jan. 26, 2024 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Not found | M | Stock Option (right to buy) | 5000 | $0.00 | 10,617.0000 | 103,268,502 | 32.02% | 0.00% |
| Dec. 26, 2023 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Director | M | Common Stock | 5000 | $2.14 | 125,583.0000 | 103,449,715 | 4.15% | 0.00% |
| Dec. 26, 2023 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Director | S | Common Stock | 5000 | $4.53 | 120,583.0000 | 103,449,715 | 3.98% | 0.00% |
| Dec. 26, 2023 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Director | M | Stock Option (right to buy) | 5000 | $0.00 | 15,617.0000 | 103,449,715 | 24.25% | 0.00% |
| Nov. 27, 2023 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Director | M | Common Stock | 5000 | $2.14 | 125,583.0000 | 103,449,715 | 4.15% | 0.00% |
| Nov. 27, 2023 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Director | S | Common Stock | 5000 | $4.59 | 120,583.0000 | 103,449,715 | 3.98% | 0.00% |
| Nov. 27, 2023 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Director | M | Stock Option (right to buy) | 5000 | $0.00 | 20,617.0000 | 103,449,715 | 19.52% | 0.00% |
| Nov. 14, 2023 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Director | M | Common Stock | 8717 | $1.64 | 129,300.0000 | 103,449,715 | 7.23% | 0.01% |
| Nov. 14, 2023 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Director | M | Common Stock | 1283 | $2.14 | 130,583.0000 | 103,449,715 | 0.99% | 0.00% |
| Nov. 14, 2023 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Director | S | Common Stock | 10000 | $3.71 | 120,583.0000 | 103,449,715 | 7.66% | 0.01% |
| Nov. 14, 2023 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Director | M | Stock Option (right to buy) | 8717 | $0.00 | 0.0000 | 103,449,715 | 100.00% | 0.01% |
| Nov. 14, 2023 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Director | M | Stock Option (right to buy) | 1283 | $0.00 | 25,617.0000 | 103,449,715 | 4.77% | 0.00% |
| Aug. 28, 2023 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Director | M | Common Stock | 100 | $1.64 | 120,683.0000 | 103,063,606 | 0.08% | 0.00% |
| Aug. 28, 2023 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Director | S | Common Stock | 100 | $3.70 | 120,583.0000 | 103,063,606 | 0.08% | 0.00% |
| Aug. 29, 2023 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Director | M | Common Stock | 2059 | $1.64 | 122,642.0000 | 103,063,606 | 1.71% | 0.00% |
| Aug. 29, 2023 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Director | S | Common Stock | 2059 | $3.70 | 120,583.0000 | 103,063,606 | 1.68% | 0.00% |
| Aug. 30, 2023 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Director | M | Common Stock | 2841 | $1.64 | 123,424.0000 | 103,063,606 | 2.36% | 0.00% |
| Aug. 30, 2023 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Director | S | Common Stock | 2841 | $3.70 | 120,583.0000 | 103,063,606 | 2.30% | 0.00% |
| Aug. 28, 2023 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Director | M | Stock Option (right to buy) | 100 | $0.00 | 13,617.0000 | 103,063,606 | 0.73% | 0.00% |
| Aug. 29, 2023 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Director | M | Stock Option (right to buy) | 2059 | $0.00 | 11,558.0000 | 103,063,606 | 15.12% | 0.00% |
| Aug. 30, 2023 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Director | M | Stock Option (right to buy) | 2841 | $0.00 | 8,717.0000 | 103,063,606 | 24.58% | 0.00% |
| July 26, 2023 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Director | M | Common Stock | 5000 | $1.64 | 125,583.0000 | 103,063,606 | 4.15% | 0.00% |
| July 26, 2023 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Director | S | Common Stock | 5000 | $4.75 | 120,583.0000 | 103,063,606 | 3.98% | 0.00% |
| July 26, 2023 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Director | M | Stock Option (right to buy) | 5000 | $0.00 | 13,717.0000 | 103,063,606 | 26.71% | 0.00% |
| June 26, 2023 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Director | M | Common Stock | 6817 | $0.98 | 127,400.0000 | 102,846,036 | 5.65% | 0.01% |
| June 26, 2023 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Director | M | Common Stock | 712 | $1.64 | 128,112.0000 | 102,846,036 | 0.56% | 0.00% |
| June 26, 2023 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Director | S | Common Stock | 7529 | $4.49 | 120,583.0000 | 102,846,036 | 5.88% | 0.01% |
| June 27, 2023 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Director | M | Common Stock | 7471 | $1.64 | 128,054.0000 | 102,846,036 | 6.20% | 0.01% |
| June 27, 2023 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Director | S | Common Stock | 7471 | $4.39 | 120,583.0000 | 102,846,036 | 5.83% | 0.01% |
| June 26, 2023 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Director | M | Stock Option (right to buy) | 6817 | $0.00 | 0.0000 | 102,846,036 | 100.00% | 0.01% |
| June 26, 2023 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Director | M | Stock Option (right to buy) | 712 | $0.00 | 26,188.0000 | 102,846,036 | 2.65% | 0.00% |
| June 27, 2023 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Director | M | Stock Option (right to buy) | 7471 | $0.00 | 18,717.0000 | 102,846,036 | 28.53% | 0.01% |
| June 22, 2023 | MAXCYTE, INC. | $MXCT | Johnston John Joseph | Director | A | Stock Option (right to buy) | 50000 | $0.00 | 50,000.0000 | 102,846,036 | 9999.99% | 0.05% |