Latest filings (excl ownership)
10-K/A
2020 FY
Annual report (amended)
15 Apr 20
10-K
2019 FY
Annual report
5 Mar 20
15-12B
Securities registration termination
19 Feb 20
EFFECT
Notice of effectiveness
18 Feb 20
15-12B
Securities registration termination
13 Feb 20
S-8 POS
Registration of securities for employees (post-effective amendment)
11 Feb 20
POS AM
Prospectus update (post-effective amendment)
11 Feb 20
8-K
Triggering Events That Accelerate or Increase a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement
16 Jan 20
8-K
Entry into a Material Definitive Agreement
6 Jan 20
10-Q
2019 Q3
Quarterly report
12 Nov 19
8-K
Submission of Matters to a Vote of Security Holders
31 Oct 19
25-NSE
Exchange delisting
11 Oct 19
10-Q
2019 Q2
Quarterly report
1 Oct 19
10-Q
2019 Q1
Quarterly report
20 Sep 19
8-K
Bankruptcy or Receivership
17 Sep 19
8-K
Bankruptcy or Receivership
12 Sep 19
DEF 14A
Definitive proxy
10 Sep 19
10-K
2018 FY
Annual report
26 Aug 19
8-K
Alta Mesa Resources Receives Nasdaq Notice Regarding
21 Aug 19
8-K
Triggering Events That Accelerate or Increase a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement
15 Aug 19
NT 10-Q
Notice of late quarterly filing
12 Aug 19
8-K
Shareholder Nominations Pursuant to Exchange Act Rule 14a-11
6 Aug 19
8-K
Entry into a Material Definitive Agreement
8 Jul 19
8-K
Results of Operations and Financial Condition
17 May 19
NT 10-Q
Notice of late quarterly filing
13 May 19
8-K
Entry into a Material Definitive Agreement
1 May 19
8-K
Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard
8 Apr 19
8-K
Entry into a Material Definitive Agreement
28 Mar 19
NT 10-K
Notice of late annual filing
4 Mar 19
8-K
Alta Mesa Announces Initial 2019 Outlook; Reports Preliminary Fourth Quarter and Full Year 2018 Results
26 Feb 19
424B3
Prospectus supplement
7 Jan 19
8-K
Alta Mesa Announces Appointment of John C. Regan As Cheif Financial Officer
7 Jan 19
424B3
Prospectus supplement
4 Jan 19
424B3
Prospectus supplement
27 Dec 18
8-K
Alta Mesa Announces Leadership Transition
27 Dec 18
424B3
Prospectus supplement
14 Nov 18
10-Q
2018 Q3
Quarterly report
14 Nov 18
8-K
Alta Mesa Announces Third Quarter 2018 Financial and Operational Results
13 Nov 18
8-K
Alta Mesa Resources Provides Third Quarter 2018 Preliminary Operations Update
30 Oct 18
424B3
Prospectus supplement
15 Aug 18
Latest ownership filings
3
Curtis M. Emerson
24 Oct 19
SC 13G/A
Alta Mesa Resources, Inc. /DE
10 Oct 19
4
Change in insider ownership
13 Aug 19
SC 13D/A
Alta Mesa Resources, Inc. /DE
13 Aug 19
4
Kimberly O. Warnica
10 Apr 19
4
Michael Anthony McCabe
19 Feb 19
4
Ronald Jay Smith
19 Feb 19
SC 13G/A
Alta Mesa Resources, Inc. /DE
14 Feb 19
SC 13G/A
Alta Mesa Resources, Inc. /DE
14 Feb 19
SC 13G/A
Alta Mesa Resources, Inc. /DE
14 Feb 19
SC 13G/A
Alta Mesa Resources, Inc. /DE
14 Feb 19
4
Change in insider ownership
12 Feb 19
3
John C Regan
11 Jan 19
SC 13G/A
Alta Mesa Resources, Inc. /DE
10 Jan 19
3
Randy L Limbacher
9 Jan 19
3
John H Campbell Jr
9 Jan 19
3
Mark Castiglione
9 Jan 19
4
Change in insider ownership
15 Nov 18
4
Change in insider ownership
15 Nov 18
4
Change in insider ownership
15 Nov 18
SC 13G/A
Alta Mesa Resources, Inc. /DE
12 Sep 18
4
William Wallace McMullen
7 Sep 18
SC 13G/A
Alta Mesa Resources, Inc. /DE
7 Sep 18
4
William Wallace McMullen
31 Aug 18
SC 13D/A
Alta Mesa Resources, Inc. /DE
22 Aug 18
4
Homer Gene Cole
21 Aug 18
4
William Wallace McMullen
21 Aug 18
4
Ronald Jay Smith
21 Aug 18
SC 13D/A
Alta Mesa Resources, Inc. /DE
17 Aug 18
SC 13G/A
Alta Mesa Resources, Inc. /DE
3 Aug 18
4
Sylvia J Kerrigan
18 Jun 18
3
Sylvia J Kerrigan
18 Jun 18
4
Michael Anthony McCabe
12 Jun 18
4
Michael Edward Ellis
12 Jun 18
4
Harlan H. Chappelle
12 Jun 18
4
Homer Gene Cole
12 Jun 18
3
Initial statement of insider ownership
12 Jun 18
3
Initial statement of insider ownership
12 Jun 18
3
Initial statement of insider ownership
12 Jun 18
3
Initial statement of insider ownership
12 Jun 18