Walter S. Woltosz, a director at Simulations Plus, Inc. ($SLP), sold shares on the open market 12 times over the past year, totaling about $2.4 million. His most recent sale occurred on October 1, 2025. These sales rank 3,147th among 11,678 individual insiders, below the average sale value of $8.6 million and average of six transactions per insider. Woltosz made no open market purchases in the last 365 days.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan. 30, 2026 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | A | Common Stock | 1776 | $0.00 | 3,280,683.0000 | 20,220,000 | 0.05% | 0.01% |
| Dec. 18, 2025 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | G | Common Stock | 9095 | $0.00 | 3,278,907.0000 | 20,220,000 | 0.28% | 0.04% |
| Nov. 3, 2025 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | A | Common Stock | 1771 | $0.00 | 3,288,002.0000 | 20,101,000 | 0.05% | 0.01% |
| Oct. 1, 2025 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 20000 | $15.39 | 3,286,231.0000 | 20,101,000 | 0.60% | 0.10% |
| Aug. 1, 2025 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | A | Common Stock | 2074 | $0.00 | 3,306,231.0000 | 20,266,000 | 0.06% | 0.01% |
| July 1, 2025 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 12224 | $18.58 | 3,304,157.0000 | 20,266,000 | 0.37% | 0.06% |
| July 1, 2025 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 7776 | $17.94 | 3,316,381.0000 | 20,266,000 | 0.23% | 0.04% |
| June 2, 2025 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 100 | $31.36 | 3,324,157.0000 | 20,266,000 | 0.00% | 0.00% |
| June 2, 2025 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 2700 | $27.71 | 3,325,957.0000 | 20,266,000 | 0.08% | 0.01% |
| June 2, 2025 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 700 | $29.13 | 3,325,257.0000 | 20,266,000 | 0.02% | 0.00% |
| June 2, 2025 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 1000 | $30.57 | 3,324,257.0000 | 20,266,000 | 0.03% | 0.00% |
| June 2, 2025 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 15500 | $26.72 | 3,328,657.0000 | 20,266,000 | 0.46% | 0.08% |
| May 1, 2025 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 10604 | $33.78 | 3,344,157.0000 | 20,266,000 | 0.32% | 0.05% |
| May 1, 2025 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | A | Common Stock | 786 | $0.00 | 3,364,157.0000 | 20,266,000 | 0.02% | 0.00% |
| May 1, 2025 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 9396 | $33.20 | 3,354,761.0000 | 20,266,000 | 0.28% | 0.05% |
| April 1, 2025 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 2600 | $24.62 | 3,363,371.0000 | 20,266,000 | 0.08% | 0.01% |
| April 1, 2025 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 17400 | $24.01 | 3,365,971.0000 | 20,266,000 | 0.51% | 0.09% |
| March 3, 2025 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 20000 | $28.68 | 3,383,371.0000 | 20,266,000 | 0.59% | 0.10% |
| Feb. 3, 2025 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 5579 | $33.53 | 3,417,005.0000 | 20,266,000 | 0.16% | 0.03% |
| Feb. 3, 2025 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 14421 | $34.06 | 3,402,584.0000 | 20,266,000 | 0.42% | 0.07% |
| Feb. 3, 2025 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | A | Common Stock | 787 | $0.00 | 3,403,371.0000 | 20,266,000 | 0.02% | 0.00% |
| Jan. 2, 2025 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 19900 | $27.88 | 3,422,684.0000 | 20,266,000 | 0.58% | 0.10% |
| Jan. 2, 2025 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 100 | $28.50 | 3,422,584.0000 | 20,266,000 | 0.00% | 0.00% |
| Dec. 2, 2024 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 20000 | $31.76 | 3,442,584.0000 | 20,266,000 | 0.58% | 0.10% |
| Nov. 1, 2024 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 20000 | $27.66 | 3,462,584.0000 | 20,301,000 | 0.57% | 0.10% |
| Nov. 1, 2024 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | A | Common Stock | 992 | $0.00 | 3,482,584.0000 | 20,301,000 | 0.03% | 0.00% |
| Oct. 1, 2024 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 20000 | $31.26 | 3,481,592.0000 | 20,301,000 | 0.57% | 0.10% |
| Sept. 3, 2024 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 18042 | $35.13 | 3,503,550.0000 | 20,301,000 | 0.51% | 0.09% |
| Sept. 3, 2024 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 1958 | $35.68 | 3,501,592.0000 | 20,301,000 | 0.06% | 0.01% |
| Aug. 1, 2024 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 1700 | $40.46 | 3,521,592.0000 | 20,465,000 | 0.05% | 0.01% |
| Aug. 1, 2024 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 18300 | $39.55 | 3,523,292.0000 | 20,465,000 | 0.52% | 0.09% |
| Aug. 1, 2024 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | A | Common Stock | 735 | $0.00 | 3,541,592.0000 | 20,465,000 | 0.02% | 0.00% |
| July 1, 2024 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 3504 | $47.47 | 3,541,457.0000 | 20,465,000 | 0.10% | 0.02% |
| July 1, 2024 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 15896 | $46.48 | 3,544,961.0000 | 20,465,000 | 0.45% | 0.08% |
| July 1, 2024 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 600 | $48.41 | 3,540,857.0000 | 20,465,000 | 0.02% | 0.00% |
| June 3, 2024 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 15391 | $46.00 | 3,565,466.0000 | 20,465,000 | 0.43% | 0.08% |
| June 3, 2024 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 4609 | $47.08 | 3,560,857.0000 | 20,465,000 | 0.13% | 0.02% |
| May 1, 2024 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 6171 | $45.32 | 3,594,686.0000 | 20,465,000 | 0.17% | 0.03% |
| May 1, 2024 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 13829 | $46.23 | 3,580,857.0000 | 20,465,000 | 0.38% | 0.07% |
| May 1, 2024 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | A | Common Stock | 662 | $0.00 | 3,600,857.0000 | 20,465,000 | 0.02% | 0.00% |
| April 1, 2024 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 590 | $41.04 | 3,600,195.0000 | 20,465,000 | 0.02% | 0.00% |
| April 1, 2024 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 19410 | $39.91 | 3,600,785.0000 | 20,465,000 | 0.54% | 0.09% |
| March 1, 2024 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 2400 | $41.72 | 3,620,195.0000 | 20,465,000 | 0.07% | 0.01% |
| March 1, 2024 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 17600 | $41.37 | 3,622,595.0000 | 20,465,000 | 0.48% | 0.09% |
| Feb. 2, 2024 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 1055 | $37.64 | 3,640,195.0000 | 20,465,000 | 0.03% | 0.01% |
| Feb. 1, 2024 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 18645 | $38.01 | 3,641,550.0000 | 20,465,000 | 0.51% | 0.09% |
| Feb. 1, 2024 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 300 | $38.47 | 3,641,250.0000 | 20,465,000 | 0.01% | 0.00% |
| Feb. 1, 2024 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | A | Common Stock | 792 | $0.00 | 3,660,195.0000 | 20,465,000 | 0.02% | 0.00% |
| Jan. 2, 2024 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 19536 | $44.45 | 3,659,867.0000 | 20,465,000 | 0.53% | 0.10% |
| Jan. 2, 2024 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 464 | $44.88 | 3,659,403.0000 | 20,465,000 | 0.01% | 0.00% |
| Dec. 14, 2023 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | G | Common Stock | 85000 | $0.00 | 3,679,403.0000 | 20,465,000 | 2.26% | 0.42% |
| Dec. 1, 2023 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 6123 | $39.22 | 3,793,255.0000 | 20,465,000 | 0.16% | 0.03% |
| Dec. 4, 2023 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 21802 | $38.67 | 3,771,453.0000 | 20,465,000 | 0.57% | 0.11% |
| Dec. 5, 2023 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 7050 | $38.55 | 3,764,403.0000 | 20,465,000 | 0.19% | 0.03% |
| Dec. 1, 2023 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 25025 | $38.70 | 3,799,378.0000 | 20,465,000 | 0.65% | 0.12% |
| Nov. 2, 2023 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 2720 | $34.60 | 3,777,911.0000 | 20,465,000 | 0.07% | 0.01% |
| Nov. 1, 2023 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 28258 | $34.07 | 3,809,653.0000 | 20,465,000 | 0.74% | 0.14% |
| Nov. 1, 2023 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 29022 | $34.69 | 3,780,631.0000 | 20,465,000 | 0.76% | 0.14% |
| Nov. 1, 2023 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | A | Common Stock | 851 | $0.00 | 3,837,911.0000 | 20,465,000 | 0.02% | 0.00% |
| Aug. 1, 2023 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | A | Common Stock | 602 | $0.00 | 3,837,060.0000 | 0 | 0.02% | 0.00% |
| June 28, 2023 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 16246 | $43.07 | 3,840,212.0000 | 0 | 0.42% | 0.00% |
| June 29, 2023 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 3754 | $42.88 | 3,836,458.0000 | 0 | 0.10% | 0.00% |
| May 30, 2023 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 9956 | $46.35 | 3,856,458.0000 | 0 | 0.26% | 0.00% |
| May 30, 2023 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 10044 | $45.76 | 3,866,414.0000 | 0 | 0.26% | 0.00% |
| May 1, 2023 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | A | Common Stock | 719 | $0.00 | 3,876,458.0000 | 0 | 0.02% | 0.00% |
| April 26, 2023 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 17911 | $41.45 | 3,877,828.0000 | 0 | 0.46% | 0.00% |
| April 26, 2023 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 2089 | $42.14 | 3,875,739.0000 | 0 | 0.05% | 0.00% |
| March 29, 2023 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 18162 | $42.74 | 3,897,577.0000 | 0 | 0.46% | 0.00% |
| March 29, 2023 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 1838 | $43.50 | 3,895,739.0000 | 0 | 0.05% | 0.00% |
| Feb. 24, 2023 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 400 | $38.91 | 3,915,739.0000 | 0 | 0.01% | 0.00% |
| Feb. 24, 2023 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 19600 | $38.02 | 3,916,139.0000 | 0 | 0.50% | 0.00% |
| Feb. 1, 2023 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | A | Common Stock | 729 | $0.00 | 3,935,739.0000 | 0 | 0.02% | 0.00% |
| Jan. 30, 2023 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 200 | $40.11 | 3,935,010.0000 | 0 | 0.01% | 0.00% |
| Jan. 30, 2023 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 2058 | $39.70 | 3,935,210.0000 | 0 | 0.05% | 0.00% |
| Jan. 27, 2023 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 17655 | $39.70 | 3,937,355.0000 | 0 | 0.45% | 0.00% |
| Jan. 27, 2023 | Simulations Plus, Inc. | $SLP | WOLTOSZ WALTER S | Director | S | Common Stock | 87 | $40.19 | 3,937,268.0000 | 0 | 0.00% | 0.00% |