Michael F Silveira
CIK 1258095 · View on SEC EDGAR ↗
Insider
First SEC filing: Aug. 27, 2013 · Latest: Aug. 27, 2013
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 50 non-open-market transactions below
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
50 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Feb. 12, 2019 | WAT | S | 10,000 | $233.43 | $2,334,300 | 798 Direct | -92.61% | Disposed | 70.5% (price as of 2026-08-21) |
| May 17, 2018 | WAT | S | 521 | $190.74 | $99,376 | 949 Direct | -35.44% | Disposed | 108.6% (price as of 2026-08-21) |
| May 17, 2018 | WAT | S | 3,000 | $190.78 | $572,340 | 1,470 Direct | -67.11% | Disposed | 108.6% (price as of 2026-08-21) |
| May 12, 2017 | WAT | S | 620 | $172.27 | $106,807 | 1,688 Direct | -26.86% | Disposed | 131.0% (price as of 2026-08-21) |
| May 16, 2016 | WAT | S | 1,309 | $136.03 | $178,063 | 2,584 Direct | -33.62% | Disposed | 192.5% (price as of 2026-08-21) |
| May 16, 2016 | WAT | S | 100 | $136.02 | $13,602 | 3,893 Direct | -2.50% | Disposed | 192.5% (price as of 2026-08-21) |
| Dec. 2, 2003 | ALOT | S | 9,500 | $16.10 | $152,950 | 500 Direct | -95.00% | Disposed | 146.8% (price as of 2026-08-21) |
| Dec. 2, 2003 | ALOT | S | 500 | $16.20 | $8,100 | 0 Direct | -100.00% | Disposed | 145.3% (price as of 2026-08-21) |
| Sept. 18, 2003 | ALOT | S | 1,000 | $11.44 | $11,440 | 0 Direct | -100.00% | Disposed | 247.4% (price as of 2026-08-21) |
| Sept. 10, 2003 | ALOT | S | 200 | $11.01 | $2,202 | 11,300 Direct | -1.74% | Disposed | 260.9% (price as of 2026-08-21) |
| Sept. 10, 2003 | ALOT | S | 500 | $12.10 | $6,050 | 10,800 Direct | -4.42% | Disposed | 228.4% (price as of 2026-08-21) |
| Sept. 10, 2003 | ALOT | S | 500 | $12.03 | $6,015 | 10,300 Direct | -4.63% | Disposed | 230.3% (price as of 2026-08-21) |
| Sept. 10, 2003 | ALOT | S | 500 | $12.28 | $6,140 | 9,800 Direct | -4.85% | Disposed | 223.6% (price as of 2026-08-21) |
| Sept. 10, 2003 | ALOT | S | 500 | $12.20 | $6,100 | 9,300 Direct | -5.10% | Disposed | 225.7% (price as of 2026-08-21) |
| Sept. 10, 2003 | ALOT | S | 500 | $11.35 | $5,675 | 8,800 Direct | -5.38% | Disposed | 250.1% (price as of 2026-08-21) |
| Sept. 10, 2003 | ALOT | S | 500 | $10.98 | $5,490 | 8,300 Direct | -5.68% | Disposed | 261.9% (price as of 2026-08-21) |
| Sept. 10, 2003 | ALOT | S | 600 | $11.00 | $6,600 | 7,700 Direct | -7.23% | Disposed | 261.3% (price as of 2026-08-21) |
| Sept. 10, 2003 | ALOT | S | 900 | $10.95 | $9,855 | 6,800 Direct | -11.69% | Disposed | 262.9% (price as of 2026-08-21) |
| Sept. 10, 2003 | ALOT | S | 1,000 | $11.09 | $11,090 | 5,800 Direct | -14.71% | Disposed | 258.3% (price as of 2026-08-21) |
| Sept. 10, 2003 | ALOT | S | 1,100 | $11.12 | $12,232 | 4,700 Direct | -18.97% | Disposed | 257.4% (price as of 2026-08-21) |
| Sept. 10, 2003 | ALOT | S | 1,700 | $11.15 | $18,955 | 3,000 Direct | -36.17% | Disposed | 256.4% (price as of 2026-08-21) |
| Sept. 10, 2003 | ALOT | S | 3,000 | $11.92 | $35,760 | 0 Direct | -100.00% | Disposed | 233.4% (price as of 2026-08-21) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II)
Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| Feb. 25, 2022 | WAT | Stock Option (Right to Buy) | Common Stock (2,311) | $323.65 | Feb. 25, 2032 | 2,311 | Acquired |
| Feb. 18, 2021 | WAT | Stock Option (Right to Buy) | Common Stock (2,698) | $280.80 | Feb. 18, 2031 | 2,698 | Acquired |
| Feb. 25, 2020 | WAT | Stock Option (Right to Buy) | Common Stock (4,124) | $203.37 | Feb. 25, 2030 | 4,124 | Acquired |
| Feb. 26, 2019 | WAT | Stock Option (Right to Buy) | Common Stock (5,654) | $238.52 | Feb. 26, 2029 | 5,654 | Acquired |
| Feb. 12, 2019 | WAT | Stock Option (Right to Buy) | Common Stock (10,000) | $103.47 | Aug. 12, 2023 | 10,000 | Disposed |
| May 17, 2018 | WAT | Stock Option (Right to Buy) | Common Stock (3,000) | $98.21 | Dec. 6, 2023 | 3,000 | Disposed |
| Feb. 23, 2018 | WAT | Stock Option (Right to Buy) | Common Stock (5,712) | $208.47 | Feb. 23, 2028 | 5,712 | Acquired |
| Feb. 17, 2017 | WAT | Stock Option (Right to Buy) | Common Stock (7,358) | $154.33 | Feb. 17, 2027 | 7,358 | Acquired |
| Dec. 9, 2015 | WAT | Stock Option (Right to Buy) | Common Stock (11,258) | $128.93 | Dec. 9, 2025 | 11,258 | Acquired |
| Dec. 11, 2014 | WAT | Stock Option (Right to Buy) | Common Stock (12,000) | $113.36 | Dec. 11, 2024 | 12,000 | Acquired |
| Dec. 6, 2013 | WAT | Stock Option (Right to Buy) | Common Stock (7,500) | $98.21 | Dec. 6, 2023 | 7,500 | Acquired |
| April 19, 2004 | ALOT | Stock Option (Right to purchase) | Common Stock (10,000) | $12.00 | April 19, 2014 | 10,000 | Acquired |
| Dec. 2, 2003 | ALOT | Common Stock | Common Stock (10,000) | $3.30 | March 31, 2013 | 10,000 | Acquired |
| Sept. 15, 2003 | ALOT | Stock Option (Right to buy) | Common Stock (1,000) | $3.70 | March 18, 2012 | 1,000 | Disposed |
| Sept. 10, 2003 | ALOT | Stock Option (Right to buy) | Common Stock (2,000) | $4.00 | Nov. 13, 2010 | 2,000 | Disposed |
| Sept. 10, 2003 | ALOT | Stock Option (Right to buy) | Common Stock (3,000) | $4.31 | March 19, 2011 | 3,000 | Disposed |
| Sept. 10, 2003 | ALOT | Stock Option (Right to buy) | Common Stock (6,500) | $3.70 | March 18, 2012 | 6,500 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 2 holdings
Securities held when first becoming an insider, per SEC Form 3.