| $687M | ||
| $385M | ||
| $215M | ||
| $100M | ||
| $87M | ||
| $82M |
Buys | $0 | 0 | – |
Sells | $0 | 0 | – |
American Shared Hospital Services leases radiosurgery and radiation therapy equipment to health care providers. The company offers radiosurgery equipment for the Gamma Knife stereotactic radiosurgery, a non-invasive procedure to treat malignant and benign brain tumors, and arteriovenous malformations, as well as for trigeminal neuralgia. It also provides financing services for Leksell Gamma Knife units. In addition, the company offers proton beam radiation therapy services in Orlando, Florida and Long Beach, California, as well as offers planning, installation, reimbursement, and marketing support services to its customers. As of December 31, 2021, it had 115 operating Gamma Knife units located in the United States, as well as two in South America in Lima, Peru and Guayaquil, Ecuador. The company also operates one PBRT system. American Shared Hospital Services was founded in 1980 and is based in San Francisco, California.
Over the last 12 months, insiders at American Shared Hospital Services have bought $0 and sold $0 worth of American Shared Hospital Services stock.
On average, over the past 5 years, insiders at American Shared Hospital Services have bought $0 and sold $0 worth of stock each year.
There was no buying activity among insiders over the last 12 months.
The last purchase of 160,559 shares for transaction amount of $438,326 was made by Stachowiak Raymond C () on 2019‑05‑15.
| 2019-05-15 | Sale | TROTMAN STANLEY S JR | director | 160,559 2.5595% | $2.73 | $438,326 | -14.25% | |
| 2019-05-15 | Stachowiak Raymond C | 160,559 2.5595% | $2.73 | $438,326 | -14.25% | |||
| 2018-06-18 | Sale | Tagawa Craig Kenji | COO/CFO | 6,900 0.1184% | $2.75 | $19,003 | +1.82% | |
| 2018-06-14 | Sale | Tagawa Craig Kenji | COO/CFO | 5 <0.0001% | $2.70 | $14 | +4.10% | |
| 2018-06-07 | Sale | Tagawa Craig Kenji | COO/CFO | 2,966 0.0501% | $2.66 | $7,890 | +2.96% | |
| 2018-06-06 | Sale | Tagawa Craig Kenji | COO/CFO | 34 0.0006% | $2.75 | $94 | +2.96% | |
| 2018-06-05 | Sale | Tagawa Craig Kenji | COO/CFO | 5,000 0.0842% | $2.75 | $13,750 | -0.71% | |
| 2017-05-19 | Sale | Tagawa Craig Kenji | COO/CFO | 3,500 0.0582% | $3.90 | $13,650 | -29.11% | |
| 2017-05-18 | Sale | Tagawa Craig Kenji | COO/CFO | 3,500 0.0582% | $3.80 | $13,304 | -27.27% | |
| 2017-03-31 | Sale | Tagawa Craig Kenji | COO/CFO | 5,000 0.0842% | $4.32 | $21,604 | -30.64% | |
| 2017-03-30 | Sale | BATES ERNEST A | Chairman and CEO | 5,000 0.0882% | $4.21 | $21,065 | -28.57% | |
| 2017-03-29 | Sale | BATES ERNEST A | Chairman and CEO | 5,000 0.0878% | $4.24 | $21,217 | -29.41% | |
| 2016-06-22 | Sale | Larson David | director | 500 0.0091% | $2.22 | $1,111 | +51.58% | |
| 2016-06-08 | BATES ERNEST A | Chairman and CEO | 500 0.0093% | $2.08 | $1,041 | +63.36% | ||
| 2016-06-07 | BATES ERNEST A | Chairman and CEO | 500 0.0092% | $2.06 | $1,029 | +60.89% | ||
| 2016-06-06 | BATES ERNEST A | Chairman and CEO | 500 0.009% | $2.02 | $1,009 | +60.10% | ||
| 2015-08-27 | Sale | Larson David | director | 8,600 0.1488% | $2.07 | $17,823 | -9.17% | |
| 2014-10-22 | Stachowiak Raymond C | 200,000 4.2423% | $2.20 | $440,000 | +21.26% | |||
| 2014-06-12 | RUFFLE JOHN F | director | 400,000 8.3917% | $2.43 | $972,000 | +0.84% | ||
| 2014-06-12 | Stachowiak Raymond C | director | 800,000 16.7834% | $2.43 | $1.94M | +0.84% |
| Stachowiak Raymond C | 760559 11.6829% | $1.62M | 3 | 0 | <0.0001% | |
| BATES ERNEST A | Chairman and CEO | 645147 9.9101% | $1.37M | 3 | 2 | +61.45% |
| RUFFLE JOHN F | director | 480267 7.3774% | $1.02M | 1 | 0 | |
| TROTMAN STANLEY S JR | director | 79847 1.2265% | $170,074.11 | 8 | 1 | +57.58% |
| Tagawa Craig Kenji | COO/CFO | 64391 0.9891% | $137,152.83 | 0 | 8 | |
| Larson David | director | 49064 0.7537% | $104,506.32 | 0 | 2 |
| Increased Positions | 6 | +24% | 1,138 | +0.13% |
| Decreased Positions | 8 | -32% | 23,086 | -2.71% |
| New Positions | 5 | New | 684 | New |
| Sold Out Positions | 2 | Sold Out | 4,447 | Sold Out |
| Total Postitions | 23 | -8% | 830,009 | -2.58% |
| Dimensional Fund Advisors Lp | $451.00 | 3% | 209,959 | 0 | 0% | 2025-09-30 |
| Vanguard Group Inc | $389.00 | 2.59% | 181,143 | -100 | -0.06% | 2025-09-30 |
| Corient Private Wealth Llc | $345.00 | 2.29% | 160,559 | 0 | 0% | 2025-09-30 |
| Bridgeway Capital Management, Llc | $208.00 | 1.38% | 96,691 | 0 | 0% | 2025-09-30 |
| Renaissance Technologies Llc | $107.00 | 0.71% | 49,800 | -16,900 | -25.34% | 2025-09-30 |
| Geode Capital Management, Llc | $70.00 | 0.47% | 32,665 | -427 | -1.29% | 2025-09-30 |
| Newedge Advisors, Llc | $64.00 | 0.43% | 29,725 | 0 | 0% | 2025-09-30 |
| James Investment Research, Inc. | $64.00 | 0.43% | 29,725 | 0 | 0% | 2025-09-30 |
| State Street Corp | $26.00 | 0.17% | 12,101 | 0 | 0% | 2025-09-30 |
| Empowered Funds, Llc | $26.00 | 0.17% | 11,924 | 0 | 0% | 2025-09-30 |