NEIDORFF MICHAEL F

CIK 1186257 · View on SEC EDGAR ↗

Insider

First SEC filing: Aug. 5, 2009 · Latest: Aug. 5, 2009

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Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 91 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

91 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
Dec. 14, 2021 CNC S 10b5-1 23,000 $80.11 $1,842,530 6,404,073 Direct -0.36% Disposed -19.9% (price as of 2026-08-21)
Dec. 14, 2021 CNC S 10b5-1 27,000 $79.37 $2,142,990 6,427,073 Direct -0.42% Disposed -19.2% (price as of 2026-08-21)
Oct. 28, 2021 CNC S 10b5-1 20,000 $70.09 $1,401,800 6,525,044 Direct -0.31% Disposed -8.4% (price as of 2026-08-21)
Nov. 9, 2020 CNC S 10b5-1 300,000 $70.12 $21,036,000 6,287,732 Direct -4.55% Disposed -8.5% (price as of 2026-08-21)
Nov. 25, 2019 CNC S 10b5-1 100,000 $60.23 $6,023,000 6,913,390 Direct -1.43% Disposed 6.5% (price as of 2026-08-21)
Nov. 15, 2019 CNC S 10b5-1 75,000 $57.00 $4,275,000 7,013,390 Direct -1.06% Disposed 12.6% (price as of 2026-08-21)
April 26, 2018 CNC S 10b5-1 250,000 $108.20 $27,050,000 3,625,571 Direct -6.45% Disposed 18.6% (price as of 2026-08-21)
July 6, 2017 CNC S 10b5-1 35,000 $80.26 $2,809,100 3,779,083 Direct -0.92% Disposed 59.9% (price as of 2026-08-21)
June 1, 2017 CNC S 10b5-1 25,000 $75.00 $1,875,000 3,824,083 Direct -0.65% Disposed 71.1% (price as of 2026-08-21)

Showing latest 100 of 493 transactions

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
Dec. 15, 2021 CNC Common Stock Option (right to buy) Common Stock $81.85 Dec. 15, 2031 67,244 Acquired
Dec. 15, 2021 CNC Common Stock Option (right to buy) Common Stock (74,000) $81.85 Dec. 15, 2031 74,000 Acquired
April 29, 2021 CNC Common Stock Option (right to buy) Common Stock (6,666) $59.62 Dec. 11, 2029 6,666 Disposed
April 29, 2021 CNC Common Stock Option (right to buy) Common Stock (7,500) $28.51 Dec. 14, 2026 7,500 Disposed
Dec. 15, 2020 CNC Common Stock Option (right to buy) Common Stock (150,000) $59.73 Dec. 15, 2030 150,000 Acquired
March 4, 2020 CNC Common Stock Option (right to buy) Common Stock (20,000) $28.51 Dec. 14, 2026 12,500 Disposed
Dec. 11, 2019 CNC Common Stock Option (right to buy) Common Stock (20,000) $59.62 Dec. 11, 2029 20,000 Acquired
Dec. 18, 2018 CNC Common Stock Option (right to buy) Common Stock (10,000) $57.02 Dec. 14, 2026 10,000 Disposed
Dec. 14, 2016 CNC Common Stock Option (right to buy) Common Stock (20,000) $57.02 Dec. 14, 2026 20,000 Acquired
Dec. 9, 2016 CNC Common Stock Option (right to buy) Common Stock (127,068) $12.60 Dec. 12, 2016 127,068 Disposed
Oct. 10, 2016 CNC Common Stock Option (right to buy) Common Stock (25,000) $12.60 Dec. 12, 2016 25,000 Disposed
Sept. 7, 2016 CNC Common Stock Option (right to buy) Common Stock (10,000) $12.60 Dec. 12, 2016 10,000 Disposed
July 28, 2016 CNC Common Stock Option (right to buy) Common Stock (10,000) $12.60 Dec. 12, 2016 10,000 Disposed
Dec. 10, 2015 CNC Common Stock Option (right to buy) Common Stock (400,000) $12.70 Dec. 13, 2015 400,000 Disposed
Sept. 29, 2015 CNC Common Stock Option (right to buy) Common Stock (20,000) $12.60 Dec. 12, 2016 20,000 Disposed
May 28, 2015 CAL Restricted Stock Units Common Stock (3,173) 3,173 Disposed
May 28, 2015 CAL Restricted Stock Units Common Stock (575) 575 Disposed
May 28, 2014 CNC Common Stock Option (right to buy) Common Stock (70,000) $17.85 July 27, 2014 70,000 Disposed
Sept. 25, 2013 CNC Common Stock Option (right to buy) Common Stock (100,000) $17.85 July 27, 2014 100,000 Disposed
Dec. 3, 2012 CNC Common Stock Option (right to buy) Common Stock (72,759) $13.98 Dec. 16, 2013 72,759 Disposed
May 1, 2012 CNC Common Stock Option (right to buy) Common Stock (10,000) $17.85 July 27, 2014 10,000 Disposed
March 2, 2012 CNC Common Stock Option (right to buy) Common Stock (81,409) $13.98 Dec. 16, 2013 81,409 Disposed
March 1, 2012 CNC Common Stock Option (right to buy) Common Stock (45,832) $13.98 Dec. 16, 2013 45,832 Disposed
March 1, 2012 CNC Common Stock Option (right to buy) Common Stock (22,759) $13.58 Aug. 26, 2013 22,759 Disposed
Feb. 29, 2012 CNC Common Stock Option (right to buy) Common Stock (100,000) $13.58 Aug. 26, 2013 100,000 Disposed
Jan. 30, 2012 CNC Common Stock Option (right to buy) Common Stock (32,573) $13.58 Aug. 26, 2013 32,573 Disposed
Jan. 28, 2012 CAL Phantom Stock Units [F2] Common Stock (79) 79 Acquired
Oct. 29, 2011 CAL Phantom Stock Units [F2] Common Stock (81) 81 Acquired
July 30, 2011 CAL Phantom Stock Units [F2] Common Stock (75) 75 Acquired
June 3, 2011 CNC Common Stock Option (right to buy) Common Stock (3,966) $25.21 Dec. 12, 2016 3,966 Disposed
June 3, 2011 CNC Common Stock Option (right to buy) Common Stock (25,204) $13.58 Aug. 26, 2013 25,204 Disposed
April 30, 2011 CAL Phantom Stock Units [F2] Common Stock (229) 57 Acquired
March 7, 2011 CNC Common Stock Option (right to buy) Common Stock (210) $7.57 July 24, 2012 210 Acquired
March 7, 2011 CNC Common Stock Option (right to buy) Common Stock (25,000) $13.58 Aug. 26, 2013 25,000 Acquired
Feb. 11, 2011 CNC Phantom Stock Common Stock (3,882) Feb. 11, 2011 3,882 Acquired
Jan. 29, 2011 CAL Phantom Stock Units [F2] Common Stock (57) 57 Acquired
Jan. 24, 2011 CNC Common Stock Option (right to buy) Common Stock (17,500) $13.58 Aug. 26, 2013 17,500 Acquired
Dec. 31, 2010 CNC Phantom Stock Common Stock (345) Dec. 31, 2010 345 Acquired
Dec. 23, 2010 CNC Phantom Stock Common Stock (97) Dec. 23, 2010 97 Acquired
Dec. 10, 2010 CNC Phantom Stock Common Stock (106) Dec. 10, 2010 106 Acquired
Nov. 24, 2010 CNC Phantom Stock Common Stock (110) Nov. 24, 2010 110 Acquired
Nov. 12, 2010 CNC Phantom Stock Common Stock (115) Nov. 12, 2010 115 Acquired
Oct. 30, 2010 CAL Phantom Stock Units [F2] Common Stock (62) 62 Acquired
Oct. 29, 2010 CNC Phantom Stock Common Stock (113) Oct. 29, 2010 113 Acquired
Oct. 28, 2010 CNC Common Stock Option (right to buy) Common Stock (5,000) $13.58 Aug. 26, 2013 5,000 Disposed
Oct. 15, 2010 CNC Phantom Stock Common Stock (105) Oct. 15, 2010 105 Acquired
Oct. 1, 2010 CNC Phantom Stock Common Stock (108) Oct. 1, 2010 108 Acquired
Sept. 30, 2010 CNC Phantom Stock Common Stock (330) Sept. 30, 2010 330 Acquired
Sept. 17, 2010 CNC Phantom Stock Common Stock (116) Sept. 17, 2010 116 Acquired
Sept. 3, 2010 CNC Phantom Stock Common Stock (123) Sept. 3, 2010 123 Acquired
Aug. 20, 2010 CNC Phantom Stock Common Stock (124) Aug. 20, 2010 124 Acquired
Aug. 6, 2010 CNC Phantom Stock Common Stock (116) Aug. 6, 2010 116 Acquired
Aug. 2, 2010 CNC Common Stock Option (right to buy) Common Stock (5,000) $13.58 Aug. 26, 2013 5,000 Disposed
July 31, 2010 CAL Phantom Stock Units [F1] Common Stock (50) 50 Acquired
July 23, 2010 CNC Phantom Stock Common Stock (123) July 23, 2010 123 Acquired
July 13, 2010 CNC Common Stock Option (right to buy) Common Stock (6,000) $13.58 Aug. 26, 2013 6,000 Disposed
July 9, 2010 CNC Phantom Stock Common Stock (121) July 9, 2010 121 Acquired
June 30, 2010 CNC Phantom Stock Common Stock (418) June 30, 2010 418 Acquired
June 25, 2010 CNC Phantom Stock Common Stock (112) June 25, 2010 112 Acquired
June 11, 2010 CNC Phantom Stock Common Stock (111) June 11, 2010 111 Acquired
May 28, 2010 CNC Phantom Stock Common Stock (112) May 28, 2010 112 Acquired
May 14, 2010 CNC Phantom Stock Common Stock (113) May 14, 2010 113 Acquired
May 10, 2010 CNC Common Stock Option (right to buy) Common Stock (5,000) $13.58 Aug. 26, 2013 5,000 Disposed
May 10, 2010 CNC Common Stock Option (right to buy) Common Stock (10,000) $7.57 July 24, 2012 10,000 Disposed
May 1, 2010 CAL Phantom Stock Units [F1] Common Stock (37) 37 Acquired
April 30, 2010 CNC Phantom Stock Common Stock (106) April 30, 2010 106 Acquired
April 16, 2010 CNC Phantom Stock Common Stock (103) April 16, 2010 103 Acquired
April 1, 2010 CNC Phantom Stock Common Stock (106) April 1, 2010 106 Acquired
March 31, 2010 CNC Phantom Stock Common Stock (2,192) March 31, 2010 2,192 Acquired
March 19, 2010 CNC Phantom Stock Common Stock (123) March 19, 2010 123 Acquired
March 5, 2010 CNC Phantom Stock Common Stock (137) March 5, 2010 137 Acquired
Feb. 19, 2010 CNC Phantom Stock Common Stock (140) Feb. 19, 2010 140 Acquired
Feb. 12, 2010 CNC Phantom Stock Common Stock (5,840) Feb. 12, 2010 5,840 Acquired
Feb. 5, 2010 CNC Phantom Stock Common Stock (137) Feb. 5, 2010 137 Acquired
Jan. 30, 2010 CAL Phantom Stock Units [F1] Common Stock (58) 58 Acquired
Jan. 22, 2010 CNC Phantom Stock Common Stock (131) Jan. 22, 2010 131 Acquired
Jan. 8, 2010 CNC Phantom Stock Common Stock (112) Jan. 8, 2010 112 Acquired
Dec. 31, 2009 CNC Phantom Stock Common Stock (373) Dec. 31, 2009 373 Acquired
Dec. 23, 2009 CNC Phantom Stock Common Stock (107) Dec. 23, 2009 107 Acquired
Dec. 11, 2009 CNC Phantom Stock Common Stock (120) Dec. 11, 2009 120 Acquired
Nov. 25, 2009 CNC Phantom Stock Common Stock (122) Nov. 25, 2009 122 Acquired
Nov. 13, 2009 CNC Phantom Stock Common Stock (123) Nov. 13, 2009 123 Acquired
Oct. 31, 2009 CAL Phantom Stock Units [F1] Common Stock (68) 68 Acquired
Oct. 30, 2009 CNC Phantom Stock Common Stock (126) Oct. 30, 2009 126 Acquired
Oct. 16, 2009 CNC Phantom Stock Common Stock (125) Oct. 16, 2009 125 Acquired
Oct. 2, 2009 CNC Phantom Stock Common Stock (126) Oct. 2, 2009 126 Acquired
Sept. 30, 2009 CNC Phantom Stock Common Stock (358) Sept. 30, 2009 358 Acquired
Sept. 18, 2009 CNC Phantom Stock Common Stock (121) Sept. 18, 2009 121 Acquired
Sept. 4, 2009 CNC Phantom Stock Common Stock (132) Sept. 4, 2009 132 Acquired
Aug. 21, 2009 CNC Phantom Stock Common Stock (125) Aug. 21, 2009 125 Acquired
Aug. 7, 2009 CNC Phantom Stock Common Stock (128) Aug. 7, 2009 128 Acquired
July 31, 2009 CAL Phantom Stock Units [F1] Common Stock (90) 90 Acquired
July 24, 2009 CNC Phantom Stock Common Stock (124) July 24, 2009 124 Acquired
July 10, 2009 CNC Phantom Stock Common Stock (124) July 10, 2009 124 Acquired
June 30, 2009 CNC Phantom Stock Common Stock (397) June 30, 2009 397 Acquired
June 26, 2009 CNC Phantom Stock Common Stock (117) June 26, 2009 117 Acquired
June 12, 2009 CNC Phantom Stock Common Stock (129) June 12, 2009 129 Acquired
May 29, 2009 CNC Phantom Stock Common Stock (127) May 29, 2009 127 Acquired
May 15, 2009 CNC Phantom Stock Common Stock (123) May 15, 2009 123 Acquired
May 1, 2009 CNC Phantom Stock Common Stock (126) May 1, 2009 126 Acquired

Showing latest 100 of 223 transactions

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 1 holding

Securities held when first becoming an insider, per SEC Form 3.

Date Ticker Security Shares Ownership
March 7, 2006 CAL No Securities Are Beneficially Owned 0 Direct