Mark Culhane
CIK 1407712 · View on SEC EDGAR ↗
Insider
First SEC filing: July 12, 2024 · Latest: July 12, 2024
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 15 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
15 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| May 27, 2021 | TDC | S | 3,957 | $48.42 | $191,598 | 270,107 Direct | -1.44% | Disposed | -41.5% (price as of 2026-08-19) |
| March 1, 2021 | TDC | S 10b5-1 | 9,029 | $40.03 | $361,431 | 277,423 Direct | -3.15% | Disposed | -29.2% (price as of 2026-08-19) |
| Nov. 25, 2020 | TDC | S | 7,050 | $21.80 | $153,690 | 16,750 Indirect | -29.62% | Disposed | 29.9% (price as of 2026-08-19) |
| March 12, 2020 | TDC | P | 1,200 | $18.92 | $22,704 | 229,934 Direct | +0.52% | Acquired | 49.7% (price as of 2026-08-19) |
| March 11, 2020 | TDC | P | 550 | $19.80 | $10,890 | 23,800 Indirect | +2.37% | Acquired | 43.1% (price as of 2026-08-19) |
| March 11, 2020 | TDC | P | 8,400 | $19.78 | $166,152 | 23,250 Indirect | +56.57% | Acquired | 43.2% (price as of 2026-08-19) |
| Nov. 11, 2019 | TDC | P | 7,800 | $26.00 | $202,800 | 14,850 Indirect | +110.64% | Acquired | 8.9% (price as of 2026-08-19) |
| Nov. 11, 2019 | TDC | P | 1,950 | $26.00 | $50,700 | 64,035 Direct | +3.14% | Acquired | 8.9% (price as of 2026-08-19) |
| May 7, 2019 | TDC | P | 4,600 | $38.03 | $174,938 | 62,085 Direct | +8.00% | Acquired | -25.5% (price as of 2026-08-19) |
| May 6, 2019 | TDC | P | 3,050 | $38.56 | $117,608 | 7,050 Indirect | +76.25% | Acquired | -26.5% (price as of 2026-08-19) |
| May 6, 2019 | TDC | P | 1,400 | $39.35 | $55,090 | 57,485 Direct | +2.50% | Acquired | -28.0% (price as of 2026-08-19) |
| Nov. 5, 2018 | TDC | P | 4,000 | $35.09 | $140,360 | 4,000 Indirect | — | Acquired | -19.3% (price as of 2026-08-19) |
| Nov. 5, 2018 | TDC | P | 2,900 | $35.14 | $101,906 | 32,824 Direct | +9.69% | Acquired | -19.4% (price as of 2026-08-19) |
| Nov. 5, 2018 | TDC | P | 6,900 | $35.11 | $242,259 | 36,824 Direct | +23.06% | Acquired | -19.3% (price as of 2026-08-19) |
| Dec. 1, 2017 | TDC | P | 4,500 | $37.66 | $169,470 | 29,924 Direct | +17.70% | Acquired | -24.8% (price as of 2026-08-19) |
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.
Initial ownership (Form 3) 2 holdings
Securities held when first becoming an insider, per SEC Form 3.